Trek Session 9.9 DH 27.5

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Trek's carbon Session 9.9 DH 27.5's sole focus is World Cup downhill domination. Period. This sleek gravity sled gets it done with 210mm of rear travel while weighing in around 35 pounds. Trek achieved a massive stiffness-to-weight ratio through the use of advanced carbon lay-ups and trussing. That formidable stiffness is enhanced by their 157x12mm rear through-axle, carbon EVO link, and of course, the Full Floater linkage and ABP rear end. For the fork, Fox delivers their dominating 40 FIT RC2 that's highly adjustable so you can tune it to your style or the course. Out back, Fox's DHX 2 SLS coil absorbs hits of all sizes. With race-dialed components like Saint gearing and brakes along with custom DT Swiss wheels wrapped in Bonty Team tires, its focus on the hot seat is crystal clear.

Features & Info

EVO Rocker Link

Trek's EVO rocker link is a HexMC carbon linkage that drastically increases rear-end stiffness and decreases total frame weight, too.

E2 Head Tube

Trek's E2 head tube is 1 1/2 inches in diameter at the bottom and 1 1/8 inches at the top. This maximizes front-end stiffness for awesome steering precision and control, while allowing the use of standard 1 1/8-inch stems and not adding much weight.

Trek supports IMBA

For every full-suspension mountain bike that they sell, Trek donates $10 to the IMBA to help build new trails. Join the IMBA today!

Geometry chart

27.5-inch/650B wheels


Trek OCLV Mountain carbon w/InTension main frame, OCLV carbon chainstays, ABP DH, 157x12mm rear thru-axle, Full Floater, EVO link, Mino Link, 210mm travel
Fox Factory 40 FIT RC2, Kashima Coat, 20mm thru-axle, 203mm-travel
Rear Shock
Fox Factory DHX 2 SLS
DT Swiss FR1950 Gravity Classic
Bontrager G4 Team Issue, 27.5 x 2.35
Shimano Saint
Rear Derailleur
Shimano Saint Shadow Plus
Rear Cogs
Shimano Ultegra, 10-speed: 11-25
Shimano Saint
Bontrager Rhythm Pro, carbon
Bontrager Rhythm, dual lock-on
Bontrager Direct-mount
Brake Levers
Shimano Saint
Shimano Saint disc, 8-inch rotors
Wellgo MG-1, magnesium body w/chromoly axle
Bontrager Evoke 3 w/titanium rails
Bontrager Rhythm Elite