Canada Cup XC Champ Evan Guthrie isn’t your typical spandex and salads weight weenie cross country racer. He races in baggies, can send it harder than most, has finished on the podium at BC Enduro Series events and hit top step on the Downtime at Singletrack6. Offered a spot on the Canadian National Team to race XC World Championships this year, he turned that down to go race the EWS Finale instead. With limited time on his “big” bike he went top 10 in a stage against the best dedicated EWS pros in the world in Italy. Nobody talked about it, but it was definitely more fun than doing six laps of a fifteen minute Worlds course down under.
Regardless of if you’re doing specific intervals or pacing yourself over an epic ride or enduro day, having accurate and instant power data is useful and valuable information. Evan eagerly signed on as one of the Cinch Power Meter testers and has been counting watts all year from the Sea Otter Short Track to the Italian singletrack. His data files helped Race Face refine our algorithms to speed up and improve accuracy and well as optimize the data for mountain bike applications. Big impacts and sudden changes in traction aren’t common in road and a road power meter plugged into a mountain bike often contains power spikes and other inaccurate data. The Race Face Cinch Power Meter is made for mountain biking, of all types, just like Evan. Spandex and salad not required.
Guthrie’s RF Next equipped Pivot LES rocking a Team Edition FOX 32 is his go-to choice for training rips.
not so secret training.
The Cinch Power Meter helps athletes track the ride: efforts on the climbs and recovery on the send.
The Cinch system allows for a power meter crankset to be swapped between bike builds with an 8mm Allen key and adjustment of the preload collar. But if Evan is changing riding styles, the power meter spindle can be easily swapped from his Next SL crank arms into Next R crank arms and back with a crank puller tool that is included in the box with the Cinch Power Meter
Enduro may be getting more technical, but the climbs can still make or break a race run.
Guthrie’s Pivot Firebird is loaded with Next R carbon wheels, cranks, and cockpit, steering a FOX 36.
Pedal churning with the Cinch Power Meter puts the information at your fingertips on Bluetooth and ANT head unit.
The Race Face Cinch Power Meter is shipping now to dealers near you!
The Cinch Power Meter gives you the tool to train for the Enduro and XC glory you truly deserve. Protected in your BB Shell, the Cinch Power Meter not only gives you the advantage you need to gauge your training and push your boundaries, but it does it with the compatibility and performance you have come to expect from Cinch. Thanks to the adaptable spindle, you can pick your poison from NEXT SL G4 to our Turbine R cranks, and with our Cinch App and both ANT+™ and Bluetooth®, you can hook it up to your favorite head unit and be on your way to the wattage cottage in no time.
• Power Accuracy +/- 2%.
• Cadence & pedal efficiency data.
• Dual Bluetooth low energy technology / ANT+ for head unit compatibility.
• Battery life over 400h & USB rechargeable.
• Utilizing CINCH for 1x or 2x configurations.
• Cinch Power Meter App for iPhone or Android.
• 134mm Spindle swaps onto 30mm Race Face Cinch capable Next SL G4, Next G3, Next R, Turbine.
Cinch Power Meter Spindle MSRP: $599.99 USD
Next SL G4 Crankarms MSRP: $479.99 USD
Next R Crankarms MSRP: $479.99 USD
PUSH Industries is expanding its range of high performance suspension components, and is pleased to announce some new flavors of its tastiest goods.
As a result of the rising popularity of trunnion-mount shocks, PUSH is now offering its Elevensix in a trunnion design to meet the demands of riders seeking the ultimate performance from their bikes using the new wider shock mount design. The new trunnion-mount shock is available in metric sizes comparable to the eye-to-eye lengths of standard Elevensix shocks. In addition, being more compact than eye-to-eye shocks, the new design allows certain shorter-travel bikes to take advantage of the Elevensix’s Dual Valve System. One such example is Evil’s Calling, which will be available with an Elevensix upgrade in the new Liquid Black color.
Liquid Black? Yep, all Elevensix shocks are now also available in a black anodized finish, in addition to the original clear anodizing. In order to ease the concerns of those suffering from extreme colormatch FOMO, PUSH is offering an upgrade/rehab/12-step recovery program. It won’t cost as much as a new kidney, but it’ll be a color change that demands commitment. Riders who already haveElevensix shocks that they wish were black should reach out to PUSH at [email protected]
ACS3 Available for All RockShox Riders
The PUSH ACS3 coil system was released earlier this year as an upgrade for Fox 36 forks, and is now available to order for RockShox Pike, Yari, and Lyrik models. Replacing the stock air spring with PUSH’s proprietary coil and air-assist kit provides a dramatic enhancement in front suspension throughout the travel, enabling supple small bump response as well as greater mid-stroke control and superior bottom out resistance. For Pike riders looking to upgrade to ACS3 performance, there are three options — 140, 150, 160mm. Lyrik and Yari riders have four travel options ranging from 140 to 170mm.
RockShox ACS3 kits are available in seven different spring rates. The Made in the USA ACS3 is an easy install for home mechanics, with convenient step-by-step how-to videos available on Vimeo and the PUSH website.
TRACTIVE Valve Tuning System
Chapter 1: Rockshox Monarch Plus
“Begin with the end in mind.” – Stephen Covey
In 2011, before the company even officially existed, Vorsprung founder Steve Mathews had begun work on what went on to become the Tractive Valve Tuning System. Rather than being a single physical part or mechanism, Tractive encompasses the single most comprehensive and consistent method of damper tuning ever seen in the mountain bike world. Working with engineers from one of the world’s foremost mathematical computing companies, we have developed a truly one-of-a-kind system – and this particular kit is only the beginning. Big claims, we know. What sets Tractive apart?
Tractive is a process, not just a part.
Example 3D plots of vertical wheel output vs displacement vs velocity from our first generation calculation software. Two different frames with two different dampers are shown.
The process begins with the end result that we are trying to achieve with a particular damper curve – it must provide sufficient, but not excessive resistance to compression and extension, in proportion to the rider’s demands.
How do we define and measure this correct amount? It needs to be measured at the wheel – the only place that matters. But direct measurement of forces and velocities at the rear wheel are very difficult to make – especially when the leverage ratio between the axle and the shock is constantly changing. And is the rider a timid 45kg (100lbs) woman, or a hard-charging 140kg (300lbs) hulk of a man, or someone more “average” in stature?
Tractive Valve installed in the Monarch Plus, custom tuned for rider demands
Our Elite Partner Tuning Centres around the world now have access to our proprietary, cloud-based Tractive Valve Tuning System calculation software. This software lets the tuner observe the true response at the wheel when considering the rider’s weight, the bike’s leverage rate and the damper curve generated by a specific tune.
Unprecedented Tuning Advantages:
• Direct comparisons can be visualised between any riders, on any bikes, with suitable benchmarks established and repeatably matched – an industry first.
• Our ever-growing database and the ability to directly compare two scenarios like this gives us an unparalleled ability to analyse and summarise feedback over time.
• Benchmarks are able to shift locally to reflect the different terrain demands in different parts of the world
• The combined experience of your local suspension tuner and Vorsprung’s own expertise can be leveraged to get you the best out of your shock
Proprietary cloud-based tune calculation software enables elite level tuners around the world direct access to our database for comparison of different scenarios.
Tractive Valve Tuning Systems are built with the following approach:
– Damper architecture weaknesses and problems identified and improved upon with upgrade parts
– Damper tunes selected to be the most suitable custom valving for the rider, frame and terrain
– Damper adjustment ranges and modes altered if necessary
The first shock to receive the Tractive treatment is the Rockshox Monarch Plus.
Upgraded triple circuit compression base valve assembly
Features and Benefits:
– Improved support
– Superior stability and predictability
– Improved compliance
– Improved grip
– Upgrade compression base valve assembly with triple circuit technology
– More usable 3-position compression adjuster with evenly spaced settings
– Pressure-balanced valving to provide sensitivity and support without cavitation
– Low friction Acetal IFP to replace the stock metal IFP which scores the reservoir bore
– Custom Tractive Valve Tuning System tune selection for each rider based on frame, weight, terrain, aggression and preference
– Customised rebound valving to replace the stock non-functional rebound shim stack
– Over 140 possible valving combinations for this shock alone
– Nitrogen charged via low-profile reservoir end cap
– All upgrade parts developed, tested and machined by Vorsprung in Whistler
– Internal alterations to reduce the typical knocking during direction changes
– Recommendations on spring pressure and volume spacer alterations if necessary.
Who is the Tractive Valve Tuning System for the Monarch Plus NOT suited for:
– Riders who already exceed the maximum rated air pressure of their shock. You need a different shock, sorry!
– Riders who want a firmer-than-stock lockout. The Tractive system offers a firm compression mode rather than a lockout for climbing traction, but if a lockout is non-negotiable, you’ll want to look elsewhere
– Riders who want to service their damper at home. The Tractive kit for Monarch Plus is not available for self-install or self-service as it requires both a vacuum bleeder and a nitrogen charging system to install.
– Riders who are using the Monarch Plus on a frame that is excessively progressive or otherwise completely unsuited to air shocks. These will work better with a coil shock.
Making a Monarch Plus a Tractive
The Tractive kit for the Monarch Plus is not available for self-install, so you’ll need to send your shock in to Vorsprung in Whistler, or to one of our Elite Partner Tuning Centres.
Vorsprung is actively seeking elite-level partners around the world, as well as dealers for user-installable parts – if you’d like to work with us, get in touch.
More tuning systems for shocks and forks. Here’s a little teaser of some Fit4 kits which will be available mid January.
When we launched the Luftkappe for the Pike, Lyrik and Yari 12 months ago, we were floored by the response – the entire first run sold out within 48 hours of release, and we’ve battled just to make enough of them over the past 12 months. The overwhelmingly positive feedback we got, along with customer demand, pushed us to offer the same kind of upgrade for other forks. We now have four new Luftkappes on offer, all of which are available for self-install. As always, the goal for these was simple: the biggest improvement in how much fun your bike is, per dollar spent.
Luftkappe options now also available for 34 Evol, 34NA2, 36 Evol and the 2018 Pike.
The New Kits: Shipping immediately: 36 Float Evol (2018+): includes Luftkappe piston assembly. MSRP $105CAD ($83USD approx). 34 Float Evol (2018+): includes Luftkappe piston assembly. MSRP $105CAD ($83USD approx). 34 Float NA2 (2016-17): includes Luftkappe piston assembly as well as new low-friction, low-profile sealhead. MSRP $130CAD.
Shipping as of December 15th: Pike Debonair (2018+): includes Luftkappe A1 piston assembly + adaptor for 2018 Pike forks (except 29+ wheel size). MSRP $100CAD ($79USD approx). Referred to as A2 variant. Available for pre-order immediately.
Continuing Kits: Pike/Lyrik/Yari A1 version: fits 2014-17 Pike Solo Air, 2018 Pike 29+ Solo Air, Lyrik/Yari 2016-18+ Solo Air and Debonair
Optional tools are also available for self-install.
Unfortunately, we do not currently offer a Luftkappe for the 2015-17 36 Float NA.
The dramatic reduction the Luftkappe offers in initial spring rate substantially improves compliance, whilst simultaneously providing more support and predictability in the mid and late stroke.
What The Luftkappe Offers:
– Softer initial stroke
– Larger negative air chamber
– Increased sag without the associated diving
– Coil-like initial and mid-stroke spring rate without the excessive bottoming of a truly linear spring
– Increased sensitivity
– Improved mid stroke support and control
– Superior bump compliance and traction
– Reduced hand fatigue
– Reduces required compression damping
– Retains volume spacer compatibility
How it works
It enlarges the negative air chamber to reduce the initial spring rate and increase the mid-stroke rate. This also lets you run slightly higher air pressure for more support, whilst maintaining improved sensitivity in the start of the stroke.
Compatiblity with MRP’s Ramp Control cartridge
As of December 6, 2017, we are working with MRP to ascertain this. For the time being, we have to say no.
Who is this NOT suited for
The Luftkappe is outright superior to the stock air spring for nearly everyone, however there are a few cases where it might not be for you:
– If you run your 36 at 180mm, it will be quite progressive. At 170mm and below, it should be fine. Likewise, a Yari at 170+mm, Pike at 160mm or Lyrik at 180mm will be quite progressive, and while the overall ride quality improves,you may also find it hard to use the last 5-10mm of travel – if this would bother you then have a think about it first.
– If you like running absurdly low sag for some reason. The Luftkappe runs more sag than the stock fork, but is firmer in the mid stroke – similar to a coil fork, but with ending-stroke ramp up to prevent harsh bottoming. If you’re the kind of person who wants the fork to run 5% sag, this isn’t for you. We could point out that a setup like that possibly indicates that your handlebars are set too low and you’re compensating with oversprung suspension, but we aren’t here to judge you, so maybe just don’t buy it.
– If you’re anal about your fork having an exact (but rounded-to-the-nearest-10mm-increment) amount of travel (it doesn’t ever, anyway, but let’s pretend it does). Because the Luftkappe balances forces at a pneumatic topout, the force right around topout is very low (literally zero other than friction), meaning the weight of the bike alone will cause it to sag a few millimetres. Your car’s suspension sags under the vehicle’s own weight, and realistically so should your bike – unless it was so sticky, overly stiff or over-preloaded that 10kg of bike weight wasn’t enough to cause your suspension to move at all, of course. If the idea of only having an apparent 148mm out of a 150mm fork bothers you, stick with the stock fork.
Using the Luftkappe on Rockshox’s 2018 Debonair spring system
For 2018, the Pike’s Solo Air spring was updated to be more similar to the Lyrik/Yari, which previously had a larger negative chamber than the Pike. Lyrik/Yari were essentially unchanged except the shape of the topout bumper. All of them were given the “Debonair” name even though only one of them changed substantially. 2018 Pikes, Lyriks and Yaris benefit every bit as much from the Luftkappe as the previous generations, and the end result is better to boot.
Why we’re able to do this
We can’t speak for the original manufacturers, but we have a lot less constraints than them. We can say “well at 180mm some people will find it too progressive” – that isn’t a luxury that large OEM manufacturers have. We can also spend months and months optimising the piston design alone. If we made public just how much time goes into developing these, a lot of people would simply think we were lying. In the meantime though, we didn’t have to design the whole rest of the fork.
Negative air chamber size
As negative chamber size increases, the initial rate drops, but space and pressure constraints go up immensely beyond a certain point. We’d happily build negative chambers far bigger than their current size, but you’d also need stanchions that were a metre long (that’s 0.00497 furlongs for those still using imperial measurements) to get enough positive volume in there.
We don’t sponsor anyone, but without violating anyone’s sponsorship obligations, let’s just say that the Luftkappe/Lyrik proved to be a winning combination in the EWS this year.
With our brand-new Vertic Trail, Sixpack presents its first clipless pedal: a great deal of time was put into its development, optimizing the strengths and eliminating the weaknesses of existing systems. Alongside our own expertise, they placed great value on feedback from team riders, such as Marcus Klausmann. The goal here was clear: Sixpack wanted to build a high-end clipless pedal at an affordable price. According to German downhill legend Marcus Klausmann, we more than achieved this!
Pedals are an important point of contact between the biker and the bike, so you do not want to make any compromises there. Sixpack is known for high-quality flat pedals, but the clipless pedal rider’s large fan base will now also be attended to with high-end pedals from Sixpack. And Sixpack scores points immediately here as well with a sophisticated design:
– An open pedal body for excellent self-cleaning
– A fixed stand with two pins on the front side
– Flattened design for easy engaging
– One of the lightest trail clipless pedals thanks to the weight-optimized design (354 g)
The Vertic Trail pedal was designed for trail, all-mountain, and enduro use. It has a very defined freedom of movement of 8° (+/- 4° from the neutral position) and a large contact surface for perfect control. The release force can be easily adjusted thanks to a scale. The binding mechanism is SPD®-compatible and has been tested and optimized for many pedal shoe combinations.
Another special feature of the Vertic Trail pedal is the selectable Q-factor (distance from the center of the pedal to the thread) of 52.5 mm of 58.5 mm. A larger Q-factor provides more space so you don’t, for example, rub the beautiful paint on the chainstays and also provides advantages in curves thanks to the wider frame. However, the Q-factor should match your own anatomy to prevent knee pain.
Sixpack can draw on many years of expertise when it comes to the pedal body and bearing. The main goals were durability and reliability, along with a low weight. That is why only high-quality materials and components are used. The pedal body is made from 6061T6 CNC-milled aluminum. Hardened coated CrMo steel is used for the axles and the bearing consists of a sealed industrial bearings and IGUS bushings.
The Vertic Trail clipless pedal is available now in the colors of Stealth Black, Racing Red, Vivid Blue, and Electric Green at specialist retail stores or in the Sixpack online shop.
Application: Enduro, Trail, All-mountain
Release angle: 4°
Release force: Adjustable (max./min. scale)
Dimensions: 94 mm x 68 mm x 16 mm
Q-factor: selectable, 52.5 mm or 58.5 mm
Weight: 354 g (without cleats)
Pedal body: CNC milled, 6061T6 aluminum
Bearing: Sealed industrial bearings, IGUS bushings
Axle: CrMo steel axis (hardened, coated, weight-optimized)
Colors: Stealth Black, Racing Red, Vivid Blue, Electric Green
Price: EUR 109.50
Note: SPD® is a registered trademark of Shimano and is in no way related to Sixpack Racing.
Matt Hunter and his son Robbie enjoying some laps on the pumptrack at the Bike Ranch in Kamloops.
Mac Ride is a child-seat system that allows children to experience off-road riding at a younger age while developing skills that they will be able to transfer to their own bikes. Mounted to the steerer and seat post and running along the top tube, it places your child in front of you and allows them to place their hands directly on the handlebars. The stirrups give them the experience of pedals and allow them to stand up over bumps. “With Mac Ride, as it’s built for off-road use, we can head out on more adventurous outings with single track trails and swooshy berms, which keeps the cycling more interesting for our eldest, Savannah,” explains Mac Ride Co-Creator, Ashley Howard. “When our son, Mackinley, was 3 and started enjoying cruising trails on his run bike, we would take both his run bike and Mac Ride with us. It meant that we could stay out all day, swapping between the two – Mac Riding up the hills, and cruising down them as a family.” This innovative product is a fun new way to get the whole family out on the trails sooner!
Glen Dobson – father, mountain biker, and engineer – designed Mac Ride when he couldn’t find a viable solution that would allow him to take his young son out on the trails. He and Ashley quickly realized that while there were plenty of child bike seats on the market, there wasn’t a product that met their specific needs. The existing models offered bulky, hard plastic, molded seats that transferred the bumps from the trail to the child, harnesses that keep the child strapped to the bike even in the event of a fall, and hard plastic or steel foot protectors that prevent the child from standing up in anticipation of rougher terrain. The biggest deterrent they found with conventional rear-mounted child bike seats is that the child will often lean out causing balance issues and the rider had to take their eyes off the trail or road to check on them. When Glen and Ashley researched other front mounted seats they found they were all quickly outgrown and for much younger children than their kids at the time.
We saw a lot of great things in a variety of bike seats, but couldn’t find a solution that met all of our needs. I got to work pulling together all of the best bits and landed on Mac Ride – a lean design that is more engaging for the child is easy to take on and off and is compatible with almost any bike. —Glen Dobson, Mac Ride Co-Creator
Mac Ride has really expanded the range of our rides. Now we have an option to all ride together, far beyond when a child’s legs run out of pedaling power. —Matt Hunter
Understanding what they didn’t want was the first step for Glen in creating Mac Ride. It was important to put the child in front to give them the same view of the trail as the rider and allow them to chat and interact. From there he positioned them with their hands on the handlebars to feel the steering and to balance themselves and added the stirrups to allow them to stand up and lean in the corners. The seat is a non-slip silicon design similar to a horse saddle that uses a pommel for comfort and security going both up and downhill. The seat is designed to support kids from ages 2 to 5 and with the lack of bulkiness, it provides a richer, closer interaction between the rider and passenger. It also takes advantage of the bike’s existing suspension and allows for a more comfortable ride. Lastly, Mac Ride positions the child on the bike without seat belts or straps, allowing them to find their own balance within the safety of their parents’ protective arms, if a fall occurred, the child would come away from the bike with the rider, rather than being strapped to the bike.
Robbie loves it. He is always asking me to find little jumps and corners to hit. I think it helps him to see what he can do when he’s on his own bike too.—Matt Hunter
The attention to detail for safety, usability, and longevity of Mac Ride are the result of many years in the testing and designing phase. Mac Ride is built with forged aircraft grade aluminum making is lightweight but also strong and stiff. The seat uses high-quality silicon rubber for comfort – and durability. The unique mounting system replaces a spacer on your steerer tube with a custom one that allows Mac Ride front clamp to attach around it. The rear clamp uses a quick release bolt to tighten it around your seat post – this is compatible with dropper posts as well. The headset spacer is the only item that is left on your bike when the seat is removed, meaning that it can quickly be taken on and off your bike between solo rides and family rides or swapped between bikes – it takes less than 1 minute to put it on or take it off a bike. With a variety of front mount spacers available Mac Ride fits a wide range of bikes from old commuters to the newest carbon mountain bikes. It is important to note that there is no damage to or adverse effects on the bike frame; the weight of the child mimics that of the rider and is evenly distributed on two very strong points that are intended for heavy loads. Not only does this make the seat safe for even carbon frames, but also easier to maneuver than other similar child seats on the market.
Mac Ride has enabled us to ride as a family, first and foremost, so that’s an easy win. Being able to take Myla places, with her bike strapped onto our backpacks, while using Mac Ride allows her to ride around lakes, past waterfalls, and old growth trees on her own and ride in places that are just too far for her to get to under her own power. She can feel the air in her hair, see the cool trees, and beautiful forest. She can experience the flow of trails and travel at speeds not available to her – within reason, obviously – with her limited ability, fitness, and experience at age 6. These moments are priceless and give her a real feel for why we, her parents, love mountain biking so much. The impact it has had on our family is incredible. Instead of doing the typical taking turns as parents, or not covering very much terrain, we get the keys to the castle so to speak, to be able to truly ride as a family. The positive impacts of this are invaluable and truly priceless!—Darren Butler
Myla, shown here with her dad three years ago, still enjoys using Mac Ride with her family.
Designed to adapt four different ways, Mac Ride easily grows with your child. The seat position can be moved forward and back, while the stirrups and foot strap length can be adjusted. Most importantly to your child’s comfort is that the stirrups can be pivoted both back and forth as well as up and down to allow for the best positioning.
With Mac Ride, we could plan cycling trips again. We really wanted a child bike seat we could travel easily with so we could keep up with our active holidays. Mac Ride is simple to fold up and pop in your carry-on luggage – and is lightweight. —Glen Dobson, Mac Ride Co-Creator
Mac Ride has been tested to the highest standards – the equivalent of thousands of hours of use – in an independent SGS testing lab. As Mac Ride was designed with Glen and Ashley’s own children in mind, safety was at the forefront of their design and testing. Currently, there is no safety certification for front-mounted child bike seats, but the seat does conform, with the exception of not having a strap, to an EU safety standard for child bike seats (EN 14344).
At the end of the day, Mac Ride’s most proven quality is that the kids who use it, have fun! “Our kids love it,” says Glen. “Now that our son is on a pedal bike, we explain to him where we’re going and offer him a choice of transport: his bike, a trailer bike, or Mac Ride. He’s able to gauge the distance, how his legs are feeling, and whether he’s craving that bonding time up front on Mac Ride before letting us know how he’s going to travel. His favorite time for Mac Riding right now is after school. I think he’s pretty knacked by 3 o’clock and loves to chill with me up front and chat about his day. Which is great for me too!”
The newly released TR S carbon rim wheels from Reynolds combine the flawless ride quality they’re known for and the durability you’ve come to expect. No matter your budget, wheels will still be the most important upgrade you make to your bike.
Reynolds ambassador Eric Porter and product manager Todd Tanner spent time ride testing the new TR S wheels on their home trails in Utah. Porter has earnest ted a reputation for himself as a mountain biker for a number of years and is a rider most will recognize, but Tanner will likely slip under the radar of the younger crowd.
Tanner is a former downhill racer from the early years of the World Cup circuit, and it shows. He definitely knows how to handle a bike, and moreover knows how they should perform. Now he puts his years of race driven product testing experience to good use refining the ride feel and overall ride performance of Reynolds mountain wheels, including the new TR S wheels.
The asymmetric carbon rims even out spoke tension for a more durable and predictable ride. The 30mm internal rim width provides excellent tire fit and provides additional air volume for superior ride quality and traction.
The TR 309 S is the 29er version and the TR 307 S is the 27.5 version. Both are offered in a range of colors to match your bike and come with both a 30-day customer satisfaction guarantee and a lifetime warranty.
Other features include Reynolds’ new TR6 100% CNC’d center lock disc mountain hub with 6-pawl construction and 5 degree engagement. Both versions are laced with 28 straight-pull spokes front and rear lending to the wheels’ quick acceleration and snap out of corners. The TR 309 S weighs in at 1635 grams while the TR 307 S tips the scales at just 1560 grams.