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2021 Trek

Slash AL Frameset

A 29″ aluminum frame full suspension enduro frameset.

Manufacturer Price

$2,199
Weight9.5 lbs (frame)  
FrameAluminum
SuspensionFull, 160mm rear
ShockRockShox Super Deluxe Ultimate
Wheels29″
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Reviews

Summary

The Trek Slash is a highly capable enduro bike, praised for its superb high-speed stability, supple suspension, and excellent traction in variable terrain. It offers a floaty, invincible ride quality with cloud-like landings, making it a favorite for rough and technical trails. While it excels in descending, some reviews note it can be less maneuverable at slow speeds and a bit heavy on climbs.

Pros
  • Superb high-speed stability

  • Supple and generous-feeling suspension

  • Great traction in variable terrain

  • Floaty, invincible ride quality

  • Cloud-like landings

Cons
  • Less maneuverable at slow speeds

  • A lot of bike to get back up the hill

  • Lockout a bit harsh and the open mode too mealy on climbs

Key Quotes
It’s the sort of bike that seems to turn the volume down on practically every kind of feature, which of course makes you search for ways to turn the volume back up again.
Beta logoBeta
The new Slash felt almost as though it was hovering above the trail.
BIKE Magazine logoBIKE Magazine
The result is a seriously accurate, phenomenally controlled, track or trail dominating high-velocity weapon that’s still pedal efficient and loaded with practical details for big days out.
Bike Perfect logoBike Perfect

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Loam Wolf
Review: Trek Slash 9.9 XO1

Aug 2022

The Trek Slash 9 9 shines on the steeps and excels in the rough, making it an almost perfect rig for enduro racing. Read the full Trek Slash 9.9 XO1 Review here.

Highs
  • Steep terrain crusher

  • Rough terrain performance

  • Fun jumper

Lows
  • Not the best climber

  • Ineffective drain tube

Read Review

MBR
Trek Slash 9.8 XT review - MBR

Apr 2022 · Alan Muldoon

The Trek Slash 9.8 XT is an enduro bike with progressive geometry and 29er wheels and 170/160mm of travel, and offers a performance that seriously impressive. Good enough to make it on our list of the best enduro mountain bikes? Absolutely. It’s good enough to score a  10 out of 10; a rare feat. Trek Slash 9.8 XT need to know: Mino Link geometry adjustment allows for a 27.5in Mullet setup KnockBlock 2.0 offers an increases the steering angle from 58º to 72º and can be removed if needed A bash guard on the MRP chain guide helps protects the 30t XT chainring RockShox Super Deluxe Ultimate shock sports ThruShaft technology to control the 160mm travel We took the Trek Slash 9.9 XO1 for a first ride when it launched last year, and while the 2022 bike looks remarkably similar, right down to the frame colour of the bike we featured last time, there are several differences. The main one being that the XT equipped bike is £1,500 cheaper and there are changes to the specification that reflect its lower price. You get a full Shimano XT drivetrain and 4-piston XT brakes, rather than SRAM XO1. You also get a RockShox Zeb Select+ fork rather than the Ultimate, while the Bontrager Line Carbon 30 wheels switch to the alloy version. Downgrades? Yes, but none that should detract from the underlying ride quality of the Slash. The most important thing is that the OCLV carbon frame remains unchanged, so you still benefit from all of the advances in the frame geometry and suspension that Trek introduced last year. Updates that saw the addition of downtube storage, the head tube angle getting slacker, the seat tube steeper and the reach longer. Trek also made the suspension more progressive, and increased rear travel by 10mm to 160mm. All positive changes then. Trek Slash 9.8 suspension Trek has always been a big proponent of proprietary suspension components. As such, the RockShox Super Deluxe Ultimate shock on the Slash 9.8 XT features Trek’s ThruShaft technology and it’s the exact same shock that comes on the flagship model. This design eliminates the need for a high pressure IFP (internal floating piston) and in simple terms, this allows for lower breakaway resistance and improved sensitivity. And because the damper shaft passes straight through the shock body, it needs an extender mount and a small hole in the frame to accept the ThruShaft at bottom out. Sounds complex? Well it is, but thankfully setting up the suspension on the Slash is as easy as 1, 2, 3. Sag gradients make it simple to dial in the correct air pressure, and in the open setting the shock has three low-compression settings for fine tuning the response to pedal inputs or the style of terrain you’re riding. Also if you ever want to fit an aftermarket shock, that’s still possible as the Slash uses a 230×62.5mm metric shock size, you’ll just need different lower mounting hardware. Setting up the suspension …Continue reading »

Highs
  • Fast, fun and efficient. Tight, reactive ride. Progressive geometry. Versatile, composed. A do-it-all bike

Lows
  • XL would benefit from a steeper seat angle

Read Review

Pinkbike
Video: A Closer Look at Jamie Edmondson's Trek Slash Race Bike

Jul 2021 · Pinkbike Originals

We caught up with Jamie Edmondson to get the details on his new Trek Slash.

Read Review

BikeRadar
Trek Slash 8 review

Apr 2021 · Robin Weaver

The Slash 8 strikes the perfect balance between a fun and lively feel, and ultimate chaos-calming composure

Highs
  • Easy to ride, very natural feeling geometry

  • Great kit for the cash

  • Easy to throw about yet still calm and stable when it needs to be

  • Seriously impressive suspension

Lows
  • Tyres aren’t the best in damp mud

Read Review

Beta
The Beta Tests: Trek Slash 9.8

Mar 2021 · Lydia Tanner

The Trek Slash has been 29-inch-only since 2016, and the 2021 version is evidence of its head start in the big-wheel enduro category.

Highs
  • Superb high-speed stability

  • Great traction in variable terrain

  • Supple and generous-feeling suspension

Lows
  • Less maneuverable at slow speeds

  • A lot of bike to get back up the hill

Read Review

NSMB
2021 Trek Slash 9.9 XO1 - Full Review

Feb 2021

Riding a bike like the Slash over the winter on the North Shore is a rough test scenario, but Trek's newest long travel trail bike has proven up to the task...

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Mountain Bike Action
Mountain Bike Action Bike Test: Trek Slash Enduro Bike - Mountain Bike Action Magazine

Feb 2021 · McCoy

One Killer Enduro Machine

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Bike Perfect
Trek Slash 9.9 X01 Enduro MTB review

Feb 2021 · Guy Kesteven

We took the Trek Slash 9.9 X01 to our toughest local trails to see how its new shape and unique shock translate to the real world

Highs
  • Phenomenal rear suspension

  • Easy setup

  • Awesome aggro geometry

  • Precision accuracy

  • High control cockpit

  • Internal storage

  • Efficient pedaling

  • Threaded BB

  • Optional steering lock

Lows
  • More confident with switched tires

  • ZEB fork requires some patience

  • Deserves better wheels

  • Short dropper on small sizes

  • Seriously grounded rather than playful

Read Review

Geometry
Specs
Build
Frame

Alpha Platinum Aluminum, internal storage, tapered head tube, Knock Block 2.0, Control Freak internal routing, downtube guard, shuttle guard, threaded BB, ISCG 05, 34.9mm seat tube, magnesium rocker link, Mino Link, ABP, Boost148, 160mm travel

BB StandardBSA, 73mm, Threaded

ColorTeal to Nautical Navy Fade

Shock

NEW RockShox Super Deluxe Ultimate, DebonAir spring, Thru Shaft 3-position damper, 230x62.5mm

Travel160mm

Bottom Bracket

BSA, 73mm, threaded

Headset

Knock Block 2.0 Integrated, 72-degree radius (includes infinite-radius chip), sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom

Stem

Bontrager Line, 35mm, Knock Block, 0 degree, 50mm length

Rider Notes
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First added September 6

Last updated November 6

Not listed for 2,030 days