2024 Trek Session 8 29er GX

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  • Regular price $7,999.99

The Session 8 is a downhill mountain bike with a burly alloy frame and high-pivot suspension design that keeps you nimble, planted and blazing-fast on even the most punishing runs.

It's right for you if...

You practically live at the downhill park, and want a fast, traction-packed DH bike that can handle your gnarliest runs thanks to a suspension design that keeps you in control all the way down.

The tech you get

A burly alloy frame, 200 mm rear travel with a Marzocchi Bomber shock, 200 mm RockShox Boxxer Select with plush Charger RC damper, powerful Code R 4-piston brakes and a SRAM GX 7-speed drivetrain.

The final word

The Session has always been the go-to DH bike. Now it's more of a ripper than ever thanks to a new suspension design that delivers more traction, speed and virtually no pedal kickback.

Why you'll love it

  1. New suspension layout with a high pivot and idler pulley increases traction, carries more speed and reduces pedal kickback for more stability
  2. Virtually zero pedal kickback means that you’ll stay confidently planted and in control during descents – especially when landing jumps or drops
  3. The high pivot design delivers a more efficient rearward axle path so you’ll carry more speed and your wheel won’t get hung up on obstacles
  4. Adjust your suspension progression by flipping the lower shock mount chip – 20% for plush park rides, 25% for racing efficiency
  5. Our new DH sizing system is based on reach, not rider height, which is the most important factor in a great downhill bike fit

Colour: Satin Black

*Please note – spec applies to all sizes unless listed separately


Frame Alpha Platinum Aluminium, high main pivot, idler pulley, integrated frame protection, internal or external routing, magnesium rocker link, Mino Link, ISCG 05 2-bolt mount, Active Braking Pivot, 157x12 mm thru-axle, 200 mm travel
Fork RockShox Boxxer, DebonAir+ spring, Rush RC damper, 52 mm offset, BoostDH 110x20 Maxle Stealth, 200 mm travel
*Shock Size: R1
Marzocchi Bomber, 181 kg/400 lb spring, 250 mm x 72.5 mm
Size: R2
Marzocchi Bomber, 204 kg/450 lb spring, 250 mm x 72.5 mm
Size: R3
Marzocchi Bomber, 227 kg/500 lb spring, 250 mm x 72.5 mm
Max compatible fork travel 200mm

Wheel front Bontrager Line DH 30, Tubeless Ready, 6-bolt, 110x20 mm Boost thru axle
Wheel rear Bontrager Line DH 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano 7 speed freehub, 157x12 mm thru axle
Skewer rear Bontrager Switch thru-axle, removable lever
Tyre Bontrager G5 Team Issue, wire bead, 2-ply 60 tpi, 29x2.50"
Rim strip Bontrager TLR
Max tyre size Frame: 29x2.50", Fork: See manufacturer

Shifter SRAM GX DH, 7-speed
Rear derailleur SRAM GX DH, medium cage
Crank Truvativ Descendant DH, DUB 83, 34-T steel ring, 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 BO-87B, alloy body, Cro-Mo axle, replaceable pins
Max. chainring size 1x: 36T

Saddle Bontrager Arvada, hollow chromoly rails, 138 mm width
Seatpost Bontrager Rhythm Elite, 31.6 mm, 0 mm offset, 330 mm length
Handlebar Bontrager Line, alloy, 35 mm, 27.5 mm rise, 780 mm width
Grips Bontrager XR Trail Elite, nylon lock-on
Stem Bontrager Line Pro, 35 mm, Direct Mount, 50 mm length
Head set FSA Orbit, sealed cartridge bearing, 1-1/8" top, 1.5" bottom (includes geometry-adjust angled cups)
Brake SRAM CODE Bronze 4-piston hydraulic disc
*Brake rotor Size: R1, R2, R3
SRAM CenterLine, 6-bolt, round-edge, 180mm
Size: R1, R2, R3
SRAM CentreLine, 6-bolt, round edge, 200 mm
Rotor size Max brake rotor sizes - Frame: 220mm, Fork: see fork manufacturer

Weight R2 - 17.92 kg / 39.51 lbs
Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).

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, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.

Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.