2019 Trek

Session 8 27.5

A 27.5″ aluminum frame full suspension downhill bike with high-end components.
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Manufacturer Price

$4,729
Weight37.5 lbs  
FrameAluminum
SuspensionFull, 210 / 200mm
ForkRockShox BoXXer
Wheels27.5″ Aluminum
Drivetrain1 × 7
GroupsetGX, MRP
BrakesHydraulic Disc
Where to Buy
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Session 8 27.5
Other Downhill bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

27 mph

Session 8 27.5

26 mph

Similar Bikes

Highest gear

(descending)

Reviews
Mountain Bike Action
Bike Test: Trek Session 9.9 29

Mar 2019 · McCoy

Faster than a speeding bullet

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Loam Wolf
Review: Trek Session 9.9 29

Nov 2018 · Drew Rohde

A review worth reading if you are considering a 29er DH bike. The Trek Session 9.9 downhill bike has a couple interesting quirks but is without a doubt one of the best DH bikes we've ridden in. If you're a racer looking for pick up speed and drop seconds, check this bike out!

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Pinkbike
Review: Trek Session 9.9 29

Oct 2018 · Paul Aston

One of the most successful, recognizable silhouettes on the DH circuit now comes with wagon wheels. So how does it compare to the newest crop of DH bikes?

Highs
  • Ultra light and stiff

  • Exceptional, simple finish

  • Balanced, aggressive geometry

  • Quick acceleration and efficient pedaling

Lows
  • Possibly too light and stiff

  • Top of the line price tag

  • Lacking traction in rough stuff

  • Reach may limit taller riders

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BikeRadar
Trek Session 8 27.5 review

Sep 2018 · Seb Stott

A pricey bike let down by a basic fork, disappointing brakes and dated geometry

Highs
  • ‘ABP’ rear suspension provides a solid, supple action

Lows
  • Relatively short front end feels cramped, high bottom bracket and short frame deliver a sometimes precarious-feeling ride, harsh fork and weak brakes are disappointing for the price

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NSMB
Cracked Dirt: TVS's Trek Session

Oct 2017

If you're a DH racer, your special edition bike usually comes out during worlds - if you're good enough to qualify and your bike sponsor loves you.

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Bicycling
First Look: 2018 Trek Session

May 2017 · Matt Phillips

All new carbon framesets for both 27.5 and 29 inch wheels for Trek's downhill race bike

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BIKE Magazine
First Look: 2018 Trek Session 29 and 27.5

May 2017

Trek releases the 2018 Session with updated geometry, refined linkage, and a revamped Float X2 shock. There's also a 29 inch version, which the internet will probably have nothing to say about.

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Dirt Mountainbike
Trek launches production Session 29

May 2017 · Smurf

The world's first production, carbon 29er downhill bike

Read Review

Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

Alpha Platinum Aluminum, ABP, Full Floater, EVO Link, tapered head tube, Mino Link, integrated frame protection, internal control routing, MicroTruss, down tube guard, ISCG Mount, 210mm travel

Fork

RockShox BoXXer RC Air, low speed compression, internal preload, Motion Control IS, 20mm Maxle DH, 200mm travel

Travel200mm

Spring TypeAir

Bottom Bracket

SRAM GXP TM, 83mm

Headset

FSA Orbit, sealed cartridge bearing, 1-1/8˝ top, 1.5˝ bottom

Stem

Bontrager Line Pro Direct Mount, 35mm clamp, 50mm length

Handlebar

Bontrager Line, 35mm, 27.5mm rise, 780 width

Saddle

Bontrager Arvada, hollow chromoly rails

Seatpost

Bontrager Rhythm Elite, 31.6mm, 0mm offset

TypeRigid

Pedals

Wellgo BO-87B, alloy body, Cro-Mo axle, replaceable pins

Grips

Bontrager XR Trail Elite, alloy lock-on

Groupset
Rear Derailleur

SRAM GX DH, Roller Bearing Clutch

Crank

Truvativ Descendant, 36T w/MRP G4 chainguide

Shifters

SRAM GX DH, 7 speed

Cassette

SRAM PG-720, 11-25, 7 speed

Chain

SRAM PC-1110

Brakes

SRAM Guide R hydraulic disc

TypeHydraulic Disc

Wheels
Rims

Bontrager Line DH 30, Tubeless Ready, Boost 110x20 front, 157x12 rear w/7 speed DH freehub

Tires

Bontrager G4 Team Issue, 27.5x2.35˝

Rider Notes
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Last updated August 20
Not listed for 1,705 days