Thursday, June 26, 2014

2015 Trek Mountain Bikes with Re:activ Technology

2015 Trek Fuel EX 27 (Available Now!) — Remedy 29 Carbon Scheduled to Debut Next Year

Trek partnered with Penske Racing shocks to improve the dampers found in the Dual Rate Control Valve (DRCV) shocks found on its Fuel, Lush, and Remedy bikes. Penske Racing has a long history building shocks for some of the most demanding motorsports, including F1, NASCAR, and World Touring car racing as well as other disciplines such as ATV and motocross.

The new technology is dubbed Re:aktiv. At the heart of the system is a new damper stack that allows faster low-speed-compression reaction time while providing a firmer platform for pedaling. The new shocks will retain the DRCV air spring, and will continue to be produced by Fox Racing Shocks. The DRCV shock has two air chambers. On smaller bumps or smooth terrain, the shock uses only the primary chamber. Larger hits that force the shock shaft to travel halfway through its stroke open an auxiliary chamber that increases the overall air volume. Trek claims the DRCV offers the lively feel of a shock with a smaller air spring, but provides the plush bump absorption of a larger air spring. Combining that technology with a firmer platform to pedal against, it says, will result in a bike that will perform just as well whether you’re pedaling over rough terrain or letting the suspension (and gravity) do the work on a descent.


Jose Gonzalez, Trek’s director of suspension design, explained that the new damper optimizes the suspension by keeping the shock at the sag point (previous-generation shocks tended to sit closer to the mid-point of the stroke). The benefits of this are twofold: It holds the bike closer to the true geometry of each model and allows the damper to react quicker and return to its optimum position sooner. As a result, the bikes pedal more crisply in all three shock modes, Climb, Trail, and Descend.


Trek also linked up with Push industries to supply air volume reducers for its DRCV shocks and forks. The parts are available directly from Push and allow riders to tune the suspension to their liking by altering the factory air spring rate. These small spacers are available in multiple sizes so you can make incremental changes in a fork’s or shock’s air spring rate.

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New Remedy 29 Carbon with Boost 148





The Remedy 29 gets a makeover for next year with the addition of carbon-frame offerings. Most of the bike remains unchanged, with geometry and spec carrying over from the current models. The biggest change is at the tail of the bike, with the introduction of Boost 148. Trek increased stiffness laterally in the wheels by partnering with SRAM to offer a hub that is 6mm wider at the axle ends and pushes the hub flanges out by 3mm each. Trek claims this will create better triangulation and even out spoke tension, and that the 29-inch wheels will ride closer in stiffness to their smaller counterparts. The Boost 148 design adds clearance to the frame for tires as large as 2.3 inches, while also keeping chainstays short and chainline in check for proper shifting performance. For riders using a single-ring drivetrain—the system will work with a double setup too—SRAM developed a spider that keeps the centerline of the ring in proper alignment with the cassette so shifting performance is unaffected. Trek and SRAM designated the system as “open source,” so the design is available to any manufacturer.


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