![]() While the new 27.5” Session is noteworthy, it’s the new Session 29 frameset that is sure to get the most tongues wagging. The updates described above do not apply to the aluminum Session frame and complete bike, which carry forward largely unchanged. Parts highlights on the Session 9.9 27.5 RSL include a FOX Factory 40 fork with air-spring DT-Swiss FR1950 wheels, Bontrager G4 tires Shimano Saint brakes, crank, shifter and rear derailleur with Ultegra 11-25 10-speed cassette and Bontrager post, saddle, direct-mount stem, grips, and carbon handlebar. The new 27.5” wheeled Session will be offered as a carbon frameset ($4,000, available in August), and as a complete bike with team build ($8,000, available in September). ![]() Flipping a chip in the Session’s upper stays alters the head tube angle by plus or minus half a degree, and changes bottom bracket height plus or minus eight millimeters. While adjustable-angle headset cups appear to be a simpler solution, in an email to Bicycling, Travis Ott, Trek’s mountain bike brand manager, said that “Adjustable headset cups were tried on the Session, but the rigors of the sport were too much for them so we’ve gone to a fixed angle headset cup now that’s a more robust solution.”įuther geometry tuning is provided by Trek’s MinoLink, which is also found on the company’s Fuel EX, Remedy, and Slash. The 27.5” Session’s head angle sits at 63 degrees (0.6 degrees slacker than the outgoing Session), but Trek includes offset headset cups that allow the head angle to be increased or decreased by an additional degree. RELATED: First Look: 2017 Trek Remedy and Fuel EX However, the new Session has the same head tube length on every size (115mm), and short seat tubes (425mm on the small, up to 456mm on the extra large), so riders can select a size based on their preferred reach/wheelbase and bike feel: shorter for more maneuverable, longer for more stable. The Session 9.9 29 is designed for riders looking for an edge in competition or the ability to transform black-diamond trails into blue ones. Trek Session 88 FR review Trek Session 88 FR review. Chainstay length was not changed-it’s still 445mm-which, combined with the longer front center and slacker head angle, results in a longer wheelbase for every size (a medium Session 27.5 has a 1,236mm wheelbase).
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