Trek Session 9.9 DH 27.5 Race Shop Limited

2018 Model

Regular price $10,999.00 Sale

World Cup champion Session is built to win. An all-new OCLV Carbon frame, updated geometry, advanced air shock and a stiffer chassis make this downhill race bike faster than ever. Session is the DH bike that excels on downhill's most brutal courses. Take on any terrain with our most advanced suspension and a geometry that can be dialled for every race.


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Bike Specifications


Front Suspension Fox Factory 40 FIT RC2, air spring, Kashima Coat, hi/lo speed compression, 20mm thru axle, 203mm travel
Rear Suspension Fox Factory Float X2, high/low speed rebound adjust, high/low speed compression adjust, tuned by Trek Suspension Lab, 225x75mm


Wheels DT Swiss FR1950 Gravity Classic
Tyres Bontrager G4 Team Issue, 27.5x2.35"


Shifters Shimano Saint, 10 speed
Crank Shimano Saint, 36T
Cassette Shimano Ultegra, 11-25, 10 speed


Seatpost Bontrager Rhythm Elite, 2-bolt head, 31.6mm, zero offset
Handlebar Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 820mm width
Brakeset Shimano Saint M820 hydraulic disc
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Bike and frame weights are based on Trek pre-production painted frames at the time of publication. Weights may vary in final production

Sizing & Fit

Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown here are for general comparison purposes only. To find your perfect fit, visit the TFM Performance Centre, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs. Bike Sizing Diagram
All measurements provided in cm unless otherwise stated.
Frame size number Frame size letter Geometry position Wheel size A Seat tube B Seat tube angle Effective seat tube angle C Head tube length D Head angle E Effective top tube F Bottom bracket height G Bottom bracket drop H Chainstay length I Offset J Trail K Wheelbase L Standover M Frame reach N Frame stack Frame rise
L L Low 27.5" 45.6 57.5° 74.0° 11.5 63.0° 60.9 34.9 0.85 44.6 5.2 12.4 125.7 74.0 44.5 61.9 61.9
M M Low 27.5" 42.5 57.5° 74.0° 11.5 63.0° 58.8 34.9 0.85 44.6 5.2 12.4 123.6 73.3 42.4 61.9 61.9
XL XL Low 27.5" 45.6 57.5° 74.0° 11.5 63.0° 63.4 34.9 0.85 44.6 5.2 12.4 128.2 74.2 47.0 61.9 61.9