Trek Session 8 29 GX Bike 2025 Overview
Build
Frame | Alpha Platinum Aluminum, 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, 157x12mm thru axle, 200mm travel BB Standard: BSA, 83mm, Threaded Tire Clearance: 2.5″ Color: Satin Trek Black |
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Fork | RockShox Boxxer, DebonAir+ spring, Rush RC damper, 52mm offset, BoostDH 110×20 Maxle Stealth, 200mm travel Travel: 200mm Spring Type: Air |
Shock | Size: R1, Marzocchi Bomber, 400lb spring, 250mm x 72.5mm; Size: R2, Marzocchi Bomber, 450lb spring, 250mm x 72.5mm; Size: R3, Marzocchi Bomber, 500lb spring, 250mm x 72.5mm Travel: 200mm |
Bottom Bracket | SRAM DUB, 83mm, BSA threaded |
Headset | FSA Orbit, sealed cartridge bearing, 1-1/8” top, 1.5” bottom (includes geometry adjust angled cups) |
Stem | Bontrager Line Pro, 35mm, Direct Mount, 50mm length |
Handlebar | Bontrager Line, alloy, 35mm, 27.5mm rise, 780mm width |
Saddle | Bontrager Arvada, hollow chromoly rails, 138mm width |
Seatpost | Bontrager Rhythm Elite, 31.6mm, 0mm offset, 330mm length Type: Rigid |
Pedals | Wellgo BO-87B, alloy body, Cro-Mo axle, replaceable pins |
Grips | Bontrager XR Trail Elite, nylon lock-on |
Groupset
Rear Derailleur | SRAM GX DH, medium cage |
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Crank | Truvativ Descendant DH, DUB 83, 34T steel ring, 165mm length |
Shifters | SRAM GX DH, 7 speed |
Cassette | SRAM PG-720, 11-25, 7 speed |
Chain | SRAM PC-1110, 11 speed |
Brakes | SRAM CODE Bronze 4-piston hydraulic disc Type: Hydraulic Disc |
Wheels
Rims | Front: Bontrager Line DH 30, Tubeless Ready, 6-bolt, 110x20mm Boost thru axle, 29”, Rear: Bontrager Line DH 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano 7 speed freehub, 157x12mm thru axle, 29” |
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Tires | Bontrager G5 Team Issue, wire bead, 2-ply 60 tpi, 29×2.50” |
Disc Rotors | Size: R1, R2, R3, SRAM CenterLine, 6-bolt, round edge, 220mm; Size: R1, R2, R3, SRAM CenterLine, 6-bolt, round edge, 200mm |
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