It's right for you if...
You want the fastest downhill bike we offer. You want the speed of 29˝ wheels and the stability of a full-on DH frame. You seek out the fastest lines, and the biggest jumps. You like to dial in your ride, and want the ability to fine-tune your suspension, fit, and handling on a bike that makes no compromises.
The tech you get
A full OCLV Mountain Carbon frame, 190mm RockShox Boxxer Ultimate fork with plush DebonAir spring, 190mm of rear travel with a RockShox Super Deluxe Ultimate DH shock, 29er Bontrager Line DH 30 wheels, SRAM X01 DH drivetrain, SRAM Code RSC brakes, and a Bontrager Line Pro OCLV carbon handlebar. This is a full-on DH race bike, and it's built so you can refine your setup for your fastest runs with Mino Link and an adjustable fixed-angle headset.
The final word
Best frame, best suspension, best parts, and fast-rolling 29˝ wheels. This is the only choice if you're a true DH devotee. Session 9.9 is simply the fastest bike on the mountain, even when that mountain is a stop on the World Cup circuit.
favorite_borderWhy you'll love it
- It's like a precision wrecking ball that gives you the confidence to tear down mountains and take the fastest, burliest lines
- The fastest runs demand the most dialed setup: the air shock and fork on Session 9.9 are adjustable and easy to fine-tune for different tracks
- Mino Link and fixed-angle headset cups let you adjust your geometry for the exact handling you want
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*spec applies to all sizes unless otherwise noted
|Frame||OCLV Mountain Carbon main frame & stays, tapered head tube, integrated frame protection, Control Freak internal routing, magnesium rocker link, Mino Link, ISCG mount, ABP, 12x157mm thru axle, 190mm travel|
|Fork||RockShox Boxxer Ultimate, DebonAir spring, Charger 2 RC2 damper, straight steerer, 46mm offset, Boost, 110x20mm Maxle Stealth, 190mm travel|
|Shock||RockShox Super Deluxe Ultimate DH, 225x70mm|
|Front Wheel||Bontrager Line DH 30, Tubeless Ready, 6-bolt, 110x20mm Boost thru axle|
|Rear Wheel||Bontrager Line DH 30, Tubeless Ready, 6-bolt, Shimano 7 speed freehub, 157x12mm thru axle|
|Tire||Bontrager G5 Team Issue, wire bead, 2-ply 60 tpi, 29x2.50''|
|Shifter||SRAM X01 DH, 7 speed|
|Rear Derailleur||SRAM X01 DH|
|Crank||SRAM X01 DH, DUB 83, 36T, 165mm length|
|Bottom Bracket||SRAM DUB, 83mm, BSA threaded|
|Cassette||SRAM PG-720, 11-25, 7 speed|
|Chain||SRAM PC-1110, 11 speed|
|Pedal||Wellgo MG-1, magnesium body, Cro-Mo axle, replaceable pins|
|Saddle||Bontrager Arvada, austenite rails, 138mm width|
|Seatpost||Bontrager Rhythm Elite, 31.6mm, 0mm offset, 330mm length|
|Handlebar||Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 820mm width|
|Grips||Bontrager XR Trail Elite, alloy lock-on|
|Stem||Bontrager Line Pro, 35mm, Direct Mount, 50mm length|
|Brake||SRAM Code RSC hydraulic disc|
|Brake Rotor||SRAM CenterLine, 6-bolt, round-edge, 180mm|
- M - 15.38 kg / 33.91 lbs (with tubes)
- Weight limit
- This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).
Sizing & fit
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.
153.0 - 162.0 cm
5'0.2" - 5'3.8"
72.0 - 76.0 cm
28.3" - 29.9"
161.0 - 175.0 cm
5'3.4" - 5'8.9"
76.0 - 82.0 cm
29.9" - 32.3"
174.0 - 188.0 cm
5'8.5" - 6'2.0"
82.0 - 88.0 cm
32.3" - 34.6"
186.0 - 196.0 cm
6'1.2" - 6'5.2"
87.0 - 92.0 cm
34.3" - 36.2"
All measurements provided in cm unless otherwise noted.
|Frame size letter||Geometry position||Wheel size||A — Seat tube||B — 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|