TREK Session 9.9
TREK Session 9.9
TREK Session 9.9
TREK Session 9.9

TREK Session 9.9

Size & Colour


Session 9.9 is the pinnacle of downhill mountain bike performance. This is the same DH bike the pros ride, and it's built for one reason: going as fast as freakin' possible downhill. It pairs a SRAM X01 DH drive train and Code RSC brakes with our premium OCLV Mountain Carbon frame and top-shelf RockShox suspension.

It's right for you if...

You want our fastest downhill bike, with 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 a plush DebonAir spring for better small bump compliance, 190 mm of rear travel with a RockShox Super Deluxe Ultimate DH shock, 29er Bontrager Line DH 30 wheels, SRAM X01 DH drive train, SRAM Code RSC brakes and a Bontrager Line Pro OCLV carbon handlebar.

The final word

Best frame, best suspension, best parts and fast-rolling 29˝ wheels. Session 9.9 is the fastest bike on the mountain, even when that mountain is a stop on the World Cup circuit.

favorite_borderWhy you'll love it

  1. It's like a precision wrecking ball that lives for tearing down mountains and taking the fastest, burliest lines
  2. The fastest runs demand the most dialled set-up: the air shock and fork on Session 9.9 are adjustable and easy to fine-tune for different tracks
  3. Mino Link and fixed-angle headset cups let you adjust your geometry for your personal handling requirements
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.


*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, 12x157 mm thru axle, 190 mm travel
Fork RockShox Boxxer Ultimate, DebonAir spring, Charger 2 RC2 damper, straight steerer, 46 mm offset, Boost, 110x20 mm Maxle Stealth, 190 mm travel
Shock RockShox Super Deluxe Ultimate DH, 225x70 mm
Shifter SRAM X01 DH, 7-speed
Rear derailleur SRAM X01 DH
Crank SRAM X01 DH, DUB 83, 36-T, 165 mm length
Bottom bracket SRAM DUB, 83 mm, 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, 138 mm width
Seatpost Bontrager Rhythm Elite, 31.6 mm, 0 mm offset, 330 mm length
Handlebar Bontrager Line Pro, OCLV Carbon, 35 mm, 15 mm rise, 820 mm width
Grips Bontrager XR Trail Elite, alloy lock-on
Stem Bontrager Line Pro, 35 mm, Direct Mount, 50 mm length
Brake SRAM Code RSC hydraulic disc
*Brake rotor Size: S, M, L, XL
SRAM CenterLine, 6-bolt, round-edge, 180mm
Size: S, M, L, XL
SRAM CenterLine, 6-bolt, round-edge, 200mm

Weight M - 15.27 kg / 33.67 lb (with tubes)
Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).