2019 Trek

Slash 9.9

A 29″ carbon frame full suspension enduro bike with ultra high-end components.
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MSRP$7,499
Weight30.2 lbs  
FrameCarbon
SuspensionFull, 150 / 160mm
ForkFox Factory Float 36
Wheels29″ Carbon
Drivetrain1 × 12
GroupsetX01 Eagle
BrakesHydraulic Disc
SeatpostDropper
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Slash 9.9
Other Enduro 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)

28 mph

Slash 9.9

26 mph

Similar Bikes

Highest gear

(descending)

Reviews
Loam Wolf
Long-Term Review: Trek Slash 9.9 XO1

Dec 2020 · Mike Wirth

The new Trek Slash 9.9 X01 sees many updates making it an even more capable all-mountain, enduro mountain bike. See how it performed.

Read Review

Pinkbike
Field Test: 2021 Trek Slash - Ready to Race

Dec 2020 · Mike Kazimer

The Slash received multiple updates for 2021, but it's still an enduro race machine at heart.

Highs
  • Light and stiff frame – encourages you to go fast

  • Great shock tune

  • In-frame storage

  • Wide range of available frame size options

Lows
  • Seat tube angle could still be a bit steeper

  • Shorter cranks and an even longer dropper post would have been nice to see

Read Review

MBR
Trek Slash 9.9 X01: first ride review - MBR

Sep 2020 · Alan Muldoon

First ride review of 2021 Trek Slash 9.9. Trek’s 29in enduro trail blazer returns with more travel and a progressive makeover.

Highs
  • Fast and easy to ride. Revised geometry and sizing bring it bang up-to-date. Suspension set-up is straightforward and the drain port in the bottom of the down tube should stop the water pooling below the shock.

Lows
  • All of the cables need shortening to stop them rattling. Trek’s MinoLink is a non-feature as we never clipped a pedal even in the low setting.

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Mountain Flyer
Trek launches revamped Slash

Sep 2020

After making an unofficial appearance last weekend at the Enduro World Series event in Zermatt, Switzerland, the latest incarnation of the Trek Slash was officially unveiled Wednesday. On paper, the new 29er rock smasher looks to be more capable than its predecessor, boasting a bump in rear suspension travel from 150 mm rear/160 mm front to 160 mm/170 mm.

Read Review

Flow Mountain Bike
Trek Slash Review | The all-new Slash is the iron fist in a velvet glove

Sep 2020

Trek is ready to unleash the new Slash, which gets more travel, a more practical frame design and a very special rear shock. We've been testing the 2021 Trek Slash 9.9 for the past month, and it turns out this ain't no one-trick pony. Read on for everything you need to know about the new Slash.

Highs
  • Wickedly supple and sensitive suspension

  • Super stable in steep and rough terrain

  • The playful, agile attitude

  • Generous frame protection

  • Stealthy quiet on the trail

Lows
  • Downtube storage could be more generous

  • We'd like to see a slightly steeper seat tube angle

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Bicycling
Carve Up the Trails with Trek’s Long Travel and Lively Slash 8

Jun 2019 · Steve Solt

This 150/160mm aluminum 29er features trail handling and enduro travel.

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Mountain Bike Action
Bike Test: Trek Slash 8

May 2019 · McCoy

Economy-class enduro

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BIKE Magazine
Review: Trek Slash 8

Mar 2019

The Slash 29 didn’t just turn heads, it blew minds, when it launched three years ago. And now it comes in an affordable, aluminum-frame option.

Read Review

Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

OCLV Mountain Carbon main frame & 1x-specific stays, ABP, Boost148, Knock Block, EVO link, tapered head tube, Mino Link, Control Freak internal routing, Carbon Armor, ISCG 05, G2 Geometry, 150mm travel

BB StandardBB86/BB92, Press Fit

Fork

Fox Factory 36 Float, GRIP2 damper, tapered steerer, Boost110, G2 Geometry w/51mm offset, 160mm travel

Travel160mm

Spring TypeAir

Bottom Bracket

SRAM DUB Press Fit, 92mm

Headset

Knock Block Integrated, sealed cartridge bearing, 1-1/8˝ top, 1.5˝ bottom

Stem

Bontrager Line Pro, Knock Block, 35mm clamp, 0 degree

Handlebar

Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise, 780mm width

Saddle

Bontrager Arvada, austenite rails

Seatpost

Bontrager Line, internal routing, 31.6mm, 15.5: 100mm, 17.5 & 18.5: 125mm, 19.5 & 21.5: 150mm

TypeDropper

Pedals

Not included

Grips

Bontrager XR Trail Elite, alloy lock-on

Groupset
Rear Derailleur

SRAM X01 Eagle, Roller Bearing Clutch

Crank

SRAM X01 Eagle DUB, 32T Direct Mount

Shifters

SRAM X01 Eagle, 12 speed

Cassette

SRAM XG-1275 Eagle, 10-50, 12 speed

Chain

SRAM GX Eagle

Brakes

Shimano Deore XT M8020 4-piston hydraulic disc

TypeHydraulic Disc

Wheels
Rims

Bontrager Line Carbon 30, Tubeless Ready, 54T Rapid Drive, Boost110 front, Boost148 rear, tubeless strips included, valves sold separately

Tires

Bontrager SE4 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 29x2.40˝

Rider Notes
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Last updated September 6
Not listed for 1,686 days