Trek Slash 8 Gen 6

Name: Trek Slash 8 Gen 6
Brand: Trek

2025 MountainEnduro Manufacturer page

Trek Slash 8 Gen 6, color Plasma Grey Pearl

Last known price: $4,399

Prices shown first for United States
Travel: 170 / 170 mm Fork / rear shock
Wheels: 27.5″, 29″ / 27.5″
Drivetrain: 1 × 12 30t / 10–51t
Gear range: 510%
Weight: 16.68 kg 36.8 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

15.5" 155–166
17.5" 164–176
18.5" 173–180
19.5" 177–189
21.5" 187–195

Components

17 of 19 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Alpha Platinum Aluminum, high main pivot, idler pulley, internal storage, angle-adjust headset, adjustable leverage rate, integrated frame protection, internal routing, alloy rocker link, ISCG 05, Active Braking Pivot, UDH, 148x12mm thru axle, 170mm travel Not identified

Suspension

2 parts

Drivetrain

6 parts

Brakes

2 parts

Wheels and tires

2 parts

Cockpit and contact points

6 parts

Grips
- Bontrager
Handlebar
- Bontrager
Headset

Integrated cartridge bearing, 1-1/8'' top, 1.5'' bottom, angle adjust cup compatible Not identified
Saddle
- Bontrager
Seatpost
- Bontrager
Stem
- Bontrager

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 15.5"

Table

Reach 430mm

Stack 588mm

Wheelbase 1195mm

Head angle 63.5°

Seat angle 78.1°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	430	448	468	488	513
Stackmm	588	623	632	641	659
Top tube lengthmm	548	578	605	628	658
Seat tube lengthmm	390	400	420	435	470
Head tube lengthmm	100	100	110	120	140
Head tube angle	63.5°	63.3°	63.3°	63.3°	63.3°
Seat tube angle	78.1°	77.8°	77.3°	77.1°	76.7°
Chainstay lengthmm	429	429	434	434	439
Wheelbasemm	1195	1224	1253	1278	1312
Front centermm	766	796	820	845	874
Bottom bracket dropmm	10	27	27	27	27
Bottom bracket heightmm	352	351	351	351	351
Standover heightmm	727	766	766	767	768
Fork rakemm	43	43	42	43	38
Trailmm	132	143	143	143	143
Stack/reach ratio	1.37	1.39	1.35	1.31	1.29

Not published by the manufacturer: Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 16.68 kg

36.8 lb
Weight limit: 136 kg

299.8 lb

Suspension

Suspension configuration: Full suspension
Front travel: 170 mm
Rear travel: 170 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 16.2 in
Highest gear: 82.5 in

Wheels and brakes

Wheel configuration: Different sizes
Brake type: Hydraulic disc

Fit and controls

Derailleur hanger: UDH
Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire clearance: Maximum tire width: 2.5″
Tire width: 2.5″
Wheel material: Aluminum
Wheel size: 27.5″, 29″

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

170 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,418 bicycles with this information
Coverage: 97.5% of the class

Rear travel

170 mm

This value is above the central range for this class.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,105 bicycles with this information
Coverage: 75.9% of the class

Shifting

Mechanical

476 of 1,454 bicycles with this information use electronic shifting.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,454 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.2 km/h
Highest gear: 31.6 km/h

Total gear range 510%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 16.2–82.5 gear inches

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds
Specification	This bicycle Trek Slash 8 Gen 6	Trek Slash 9.8 Gen 6 GX AXS T-Type	Trek Slash 9.8 Gen 6 XT	Trek Slash 9.9 Gen 6 X0 AXS T-Type	Trek Slash 9.9 Gen 6 XX AXS T-Type	Trek Slash 9 Gen 6 GX AXS T-Type
Frame
Frame material	Aluminum	Carbon	Carbon	Carbon	Carbon	Aluminum
Bicycle weight	16.68 kg	15.83 kg	15.78 kg	15.93 kg	15.78 kg	17.6 kg
Fork material	Not informed	Not informed	Not informed	Not informed	Not informed	Aluminum
Drivetrain
Largest sprocket	51	52	51	52	52	52
Lowest gear	16.2 in	15.9 in	16.2 in	15.9 in	15.9 in	15.9 in
Cockpit
Shifting	Mechanical	Electronic	Mechanical	Electronic	Electronic	Electronic
Other specifications
Wheel material	Aluminum	Aluminum	Aluminum	Carbon	Carbon	Aluminum
Wheel size	27.5″ / 29″	27.5″ / 29″	27.5″ / 29″	27.5″ / 29″	29″ / 27.5″	27.5″ / 29″