trek sessions 29 dh bike

2022 Trek

Sessions 29

The Trek Session 9 stands out in the downhill mountain biking world. It's engineered for those seeking unparalleled performance on the most challenging terrains, combining cutting-edge technology with durability to meet the demands of professional racers and enthusiasts alike.

  • Category: MTB, Downhill
  • Price: $7,200
  • Frame: OCLV Mountain Carbon main frame. 190 mm travel
  • Fork: RockShox Boxxer Ultimate. 190mm travel
  • Shock: RockShox Super Deluxe Ultimate DH
  • Max Compatible Travel: 200mm
  • Simple, clean design with a great finish
  • Aggressive but comfortable geometry
  • High-Quality, professional parts
  • Extremely Light
  • 4 Different Bike Sizes
  • Lack of weight can create a stiff feel
  • Very Expensive
  1. Recommended in 1 article:
  2. DH Bikes
$7,200 from Trek Affiliate Link

photo credit  Photo by @kirkbyoffroad

Our Ratings

  • Quality
  • Durability
  • Weight
  • Price
  • Overall

Trek is one of the most well-rounded brands in mountain biking. They sell dozens of models throughout various disciplines, including downhill, where the Sessions 29 features.

This bike has a great heritage on the downhill competition circuit. Riders, including Vali Höll, Loris Vergier, Rachel Atherton, and Kate Edwards, are just a few that commonly ride this model. You will have seen this model on the DH world cup podiums various times over the past few years.

Trek released the 29” models onto the world cup circuit in 2017. Since then, they've made great improvements in each iteration, leading to this year with the 9.9 machine!

Full OCLV carbon makes up the frame, with the rest of the bike being quite a common setup for Trek's DH bikes. Trek only released the full version of this bike in 2019. Before then, only the frameset and fork kit was sold.

I love the simple, clean design of this frame. The top tube flows smoothly from the headtube down to the bottom bracket, with a strong seat tube triangle that angles backward, similar to most DH bikes. At the end of this line is the BB83 threaded bottom bracket.

Another contributing factor to the sleek design is the cable routing. Trek has routed the brake and gear cables internally into the front triangle and out of the lower portion of the downtube. The gear cable then goes through the chainstay, intending to reduce chain-slap noises. This doesn't seem to have worked very well, so extra chainstay guards may be a good idea.

To cater to every rider up to 136kg, Trek has produced four different sizes of this bike, from small to Extra Large. Use the table below to determine the best size for you to buy.

Acceleration and gaining speed out of corners or jumps are very easy with this bike. The lack of weight and stiff construction improves this speed, but any bottoming out can feel quite rough and uncomfortable.

The Session comes with 190mm of travel and a max of 200mm. It's a lot for an all-rounder mountain bike, but for a DH bike, this isn't much. You'll see most downhill bikes with 210mm or more. This isn't a terrible feature of the Trek, but it's something to think about.

Trek Sessions 29 Specifications

  • Frame: OCLV Mountain Carbon main frame. 190 mm travel
  • Fork: RockShox Boxxer Ultimate. 190mm travel
  • Shock: RockShox Super Deluxe Ultimate DH
  • Max Compatible Travel: 200mm
  • Front Wheel: Bontrager Line DH 30
  • Rear Wheel: Bontrager Line DH 30
  • Rim: Bontrager Line DH 30
  • Tyre: Bontrager G5 Team Issue
  • Rim Strip: Bontrager TLR
  • Max Tyre Size: 29u201d x 2.5u201d
  • Shifter: SRAM X01 DH, 7 speed
  • Rear Derailleur: Sram X01 DH
  • Crank: Sram X01 DH, 36T, 165mm
  • Bottom Bracket: Sram DUB 83mm
  • Cassette: Sram PG-720, 11-25, 7-speed
  • Chain: Sram PC-1110, 11-speed
  • Pedal: Wellgo MG-1
  • Max Chainring Size: 36T
  • Saddle: Bontrager Arvada, 138mm width
  • Seatpost: Bontrager Rhythm Elite, 31.6mm, 0mm offset, 330mm length
  • Handlebars: Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 820mm width
  • Grips: Bontrager XR Trail Elite, alloy lock-on
  • Stem: Bontrager Line Pro, 35mm, 50mm length
  • Headset: FSA Orbit, sealed cartridge bearing
  • Brake Rotor: Sram CentreLine, 6-bolt, 180mm or 200mm
  • Brake Set: SRAM Code RSC 4-piston hydraulic disc
  • Weight: ~15.27kg
  • Max Weight Limit: 136kg


  • Seat Tube: 42.5 cm
  • Seat Tube Angle: 61.6 deg
  • Effective Seat Tube Angle: 77.1 deg
  • Head Tube Length: 11.7 cm
  • Head Angle: 63.6 deg
  • Effective Top Tube: 58.6 cm
  • Bottom Bracket Height: 35.9 cm
  • Bottom Bracket Drop: 1.2 cm
  • Chainstay Length: 43.5 cm
  • Offset: 4.6 cm
  • Wheelbase: 124.3 cm
  • Standover: 75.5 cm
  • Frame Reach: 44.7 cm
  • Frame Stack: 63.4 cm

More Images of the Trek Sessions 29 MTB

trek sessions red downhill bike

photo credit  Photo by @kirkbyoffroad

trek downhill mountain bike sessions 29

Trek Session 9.9 | Dirt 100


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