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2017 Trek

Session 8 DH 27.5

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

$3,999
Weight38.4 lbs  
FrameAluminum
SuspensionFull, 210 / 200mm
ForkRockShox BoXXer
ShockRockShox
Wheels27.5″ Aluminum
Drivetrain1 × 7
GroupsetTruvativ Descendant, GX
BrakesSRAM Guide R Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Session 8 DH 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 DH 27.5

26 mph

Similar Bikes

Highest gear

(descending)

Sizing
SM

5'2" – 5'8"

MD

5'6" – 5'11"

LG

5'10" – 6'3"

XL

6'1" – 6'7"

🐐 Estimated

Rider Fit Notes

None yet.

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Reviews

Summary

The Trek Session is a downhill bike known for its American-made frame and high-quality construction, offering 190mm of travel with a trunion mount Float X2 suspension. It's available in both 27.5 and 29er versions, featuring a stiffer and longer design that's described as a 'terrain eating beast'. While it boasts a high-end build and performance, it comes at a higher price point compared to Asian-made frames.

Pros
  • American made frame

  • 190mm of travel with trunion mount Float X2

  • Available in both 27.5 and 29er versions

  • Stiffer and longer design

  • High-quality construction

Cons
  • Higher price compared to Asian made frames

  • Seatstay bridge differs from previous versions

  • No floating shock

Key Quotes
Holy shit, I never knew the Session was a frame wholly created in America.
Dirt Mountainbike logoDirt Mountainbike
The linkage and rear triangle give Tom's Session Park 190mm of travel.
NSMB logoNSMB
The Trek Session has been a staple of the World Cup DH scene and the newest version is one of the biggest updates we’ve seen.
MTBR logoMTBR

Feedback?

View all reviews

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!

Read Review

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

Read Review

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

Read Review

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.

Read Review

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

Read Review

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.

Read Review

Dirt Mountainbike
Trek launches production Session 29

May 2017 · Smurf

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

Read Review

MTBR
Revamped Trek Session adds 29er option

May 2017 · Francis Cebedo

Trek’s pursuit of downhill speed has led to a longer, stiffer, Session. A 29er version has been added as well to now that components have caught up with the demands of the big wheel. - Mtbr.com

Read Review

Geometry
Specs
Build
Frame

Alpha Platinum Aluminum, ABP, Full Floater, EVO Link, E2 tapered head tube, Mino Link, integrated frame protection, internal control routing, MicroTruss, down tube guard, ISCG Mount, 210mm travel

Fork

RockShox BoXXer RC, coil spring (S, M red; L, XL blue), low speed compression, internal preload, Motion Control IS, 20mm Maxle DH, 200mm travel

Travel200mm

Spring TypeCoil

Shock

RockShox Kage RC, coil spring, rebound, adjustable hydraulic compression damping, (S 400lb; M 450lb; L 500lb; XL 500lb spring), tuned by Trek Suspension Lab, 8.75x2.75"

Travel210mm

Bottom Bracket

Sealed cartridge

Headset

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

Stem

Bontrager Direct Mount, 31.8mm

Handlebar

Bontrager Rhythm Elite, 31.8mm, 15mm rise

Saddle

Bontrager Evoke 2, chromoly rails

Seatpost

Bontrager Rhythm Elite, 2-bolt head, 31.6mm, zero offset

TypeRigid

Pedals

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

Grips

Bontrager Rhythm, dual lock-on

Groupset
Rear Derailleur

SRAM GX DH, Roller Bearing Clutch

Crank

Truvativ Descendant, 36T

Shifters

SRAM GX DH, 7 speed

Cassette

SRAM PG-720, 11-25, 7 speed

Chain

SRAM PC-1110

Brakes

SRAM Guide R hydraulic disc

TypeSRAM Guide R Hydraulic Disc

Wheels
Rims

DT Swiss FR2150, 110x20 front, 157x12 rear

Tires

Bontrager G4 Team Issue, 27.5x2.35"

Rider Notes
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First added April 12

Last updated July 21

Not listed for 3,234 days