2020 Trek Session 8 27.5

High-end component level aluminum frame downhill bike

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2020 Trek Session 8 27.5
  • MSRP $4,730
  • Suspension Full
  • Front Travel 200mm
  • Rear Travel 210mm
  • Frame Aluminum
  • Fork 
    RockShox BoXXer
  • Wheels 27.5″
  • Drivetrain 1 × 7
  • Groupset 
  • Brakes Hydraulic Disc


1 × 7 — 7 speed

2020 Trek Session 8 27.5
25 mph
Similar Bikes
26 mph

Similar bikes are easier to ride up hills than the 2020 Session 8 27.5.

The 2020 Session 8 27.5 won‘t keep up with similar bikes while riding downhill or sprinting.

Estimated Spec Level
est. spec level →$0$1,000$2,000$3,000$4,000$5,000
This bike
Other downhill bikes

Estimated spec level of the Session 8 27.5 compared to other downhill bikes. 99 Spokes analyzes the build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more to estimate the overall spec level of each bike.  Learn more »

FrameAlpha Platinum Aluminum, tapered head tube, internal control routing, integrated frame protection, downtube guard, ISCG 05 mount, magnesium rocker link, Mino Link, ABP, 157x12mm thru axle, 210mm travel
ForkRockShox Boxxer Select, DebonAir spring, Charger RC damper, 46mm offset, 20x110mm Boost thru axle, 200mm travel
Bottom BracketSRAM DUB, 83mm, BSA threaded
HeadsetFSA Orbit, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom
StemBontrager Line Pro, 35mm, Direct Mount, 50mm length
HandlebarBontrager Line, alloy, 35mm, 27.5mm rise, 780mm width
SaddleBontrager Arvada, hollow chromoly rails, 138mm width
SeatpostBontrager Rhythm Elite, 31.6mm, 0mm offset, 330mm length
GripsBontrager XR Trail Elite, alloy lock-on
Rear DerailleurSRAM GX DH
ShiftersSRAM GX DH, 7 speed
CrankTruvativ Descendant DH, DUB 83, 34T steel ring, 165mm length
CassetteSRAM PG-720, 11-25, 7 speed
ChainSRAM PC-1110, 11 speed
BrakesSRAM Guide R hydraulic disc, 200mm front rotor, 180mm rear rotor
Disk RotorsSRAM CenterLine, 6-bolt, round-edge, 180mm
RimsBontrager Line DH 30, Tubeless Ready, 6-bolt, 110x20mm Boost thru axle
TiresBontrager G4 Team Issue, Inner Strength sidewalls, wire bead, 60 tpi, 27.5x2.40''

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2020 Trek Session 8 27.5