Trek Session 8 29 Gen 5 Chameleon Green

Trek Session 8 29 GX

The Trek Session 8 29 GX is a downhill mountain bike built for riders who want a proper race-ready platform without the carbon price tag. With its tough Alpha Platinum Aluminium frame, high-pivot suspension design, 200 mm of travel and full 29” wheel setup, the Session 8 is made to stay planted, fast and controlled on steep, rough and high-speed downhill tracks.

From bike park laps to serious gravity riding, this is the sort of bike that rewards confidence. The high-pivot layout helps the rear wheel move up and back through big hits, keeping momentum through square edges, rocks and braking bumps. Add in a RockShox Boxxer fork, Marzocchi Bomber rear shock, SRAM GX DH drivetrain and SRAM Maven 4-piston brakes, and the Session 8 is ready for proper downhill punishment.

For local riders chasing gravity days, shuttle runs and big-hit capability, the Session 8 29 GX is a serious option from Mackay Cycles. It is right at home for riders who love pushing harder on rough terrain and want a downhill bike built for control, speed and confidence.

Why you'll love it

• Burly Alpha Platinum Aluminium downhill frame with 200 mm rear travel
• High-pivot suspension design helps maintain speed and control through rough terrain
• RockShox Boxxer 200 mm fork for serious downhill performance
• Marzocchi Bomber rear shock with size-specific spring rates
• SRAM GX DH 7-speed drivetrain built specifically for downhill riding
• SRAM Maven Bronze 4-piston hydraulic brakes for powerful stopping control
• Bontrager Line DH 30 wheels with 29” Bontrager G5 Team Issue tyres
• Mino Link geometry adjustment and included angled headset cups for tuning your setup

Key Features

• 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
• Rear Shock: Marzocchi Bomber, 250 mm x 72.5 mm, spring rate varies by size
• Wheel Size: 29” front and rear
• Drivetrain: SRAM GX DH 7-speed
• Brakes: SRAM Maven Bronze 4-piston hydraulic disc brakes
• Tyres: Bontrager G5 Team Issue, wire bead, 2-ply 60 tpi, 29x2.50”

Technical Specifications

• Frame: Alpha Platinum Aluminium, high main pivot, idler pulley, integrated frame protection, Mino Link, Active Braking Pivot, 200 mm travel
• Fork: RockShox Boxxer, DebonAir+ spring, Rush RC damper, 200 mm travel
• Shock: Marzocchi Bomber, 250 mm x 72.5 mm
• Front Wheel: Bontrager Line DH 30, Tubeless Ready, 6-bolt, 110x20 mm Boost thru axle, 29”
• Rear Wheel: Bontrager Line DH 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano 7-speed freehub, 157x12 mm thru axle, 29”
• Tyres: Bontrager G5 Team Issue, wire bead, 2-ply 60 tpi, 29x2.50”
• Shifter: SRAM GX DH, 7-speed
• Rear Derailleur: SRAM GX DH, medium cage
• Crank: Truvativ Descendant DH, DUB 83, 34T steel ring, 165 mm
• Bottom Bracket: SRAM DUB, 83 mm, BSA threaded
• Cassette: SRAM PG-720, 11-25, 7-speed
• Chain: SRAM PC-1110, 11-speed
• Pedals: Wellgo BO-87B, alloy body, Cro-Mo axle, replaceable pins
• Saddle: Verse Short Comp, steel rails, 145 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: Trek Line Pro lock-on
• Stem: Bontrager Line Pro, 35 mm, direct mount, 50 mm length
• Headset: FSA Orbit sealed cartridge bearing, includes geometry-adjust angled cups
• Brakes: SRAM Maven Bronze 4-piston hydraulic disc
• Rotors: SRAM CenterLine / CenterLine 2.0, 6-bolt, up to 220 mm
• Weight: Approx. 19.05 kg / 42 lb, R2 size with tubes
• Weight Limit: Maximum total combined weight of bicycle, rider and cargo: 136 kg

Available Sizes

• R1
• R2
• R3

Colour

• Chameleon Green

Best suited for

• Downhill mountain biking
• Bike park laps
• Shuttle runs
• Gravity racing
• Riders wanting a tough alloy downhill bike with proper race-bike capability

Every Trek bike from Mackay Cycles is professionally assembled and safety checked by our workshop team before collection. We can also help with sizing, suspension setup and servicing to get your Session dialled for the way you ride.