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Trek Slash 9.9 XTR - 2021

Trek Slash 9.9 XTR
  • Color: Carbon Blue Smoke
  • Color: Lithium Grey
  • Color: Factory Orange/Carbon Smoke
$7,599.99 - $8,599.99
$9,549.99 - $10,049.99
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Slash 9.9 is the fastest enduro mountain bike in the lineup, so it's no surprise it's the go-to ride for the pros of Trek Factory Racing Enduro. A full carbon frame, all-new hard-charging suspension, fast-rolling carbon wheels, and Shimano's newest XTR drivetrain make this top-of-the-line ride the undisputed king of enduro.

It's right for you if...
You're looking for the kind of performance advantages that come only from the kind of enduro race bikes that rip it up on the world’s biggest stage. You like going fast, getting rowdy, and railing corners all the way to the top step of the podium.

The tech you get
A full OCLV Mountain Carbon frame with 160mm of travel and an all-new RockShox Super Deluxe Ultimate shock with an updated ThruShaft damper, plus an all-new RockShox ZEB fork with extra-beefy 38mm stanchions. A Shimano XTR drivetrain for refined, super-smooth shifts, and fast-rolling Line Pro 30 OCLV Mountain Carbon wheels. The large internal storage compartment in the down tube lets you stow tools and gear.

The final word
There's not a single part on this bike that wasn't made for ripping it up at insane speeds on the wildest enduro courses in the world. Fast, tough, fast, fun, fast. Did we mention this bike is fast?

Why you'll love it
- The RockShox ZEB fork's bigger 38mm stanchions help you stay on your line through the chunky stuff, while the updated damper lets you dial in the feel
- Shimano XTR delivers smooth, precise shifting with just a light touch of the lever
- New, removable Knock Block has a bigger steering angle to keep cables and hoses safe without sacrificing turning radius
- We added a second down tube guard to better protect your frame from shuttle-related damage
- Wider seat tube, wider dropper—the 34.9mm diameter post is stronger, more durable, and moves up and down faster


Frame OCLV Mountain Carbon main frame & stays, internal storage, tapered head tube, Knock Block 2.0, Control Freak internal routing, Carbon Armor, shuttle guard, threaded BB, ISCG 05, 34.9mm seat tube, magnesium rocker link, Mino Link, ABP, Boost148, 160mm travel
Fork RockShox ZEB Ultimate, DebonAir spring, Charger 2.1 RC2 damper, tapered steerer, 44mm offset, Boost110, 15mm Maxle Stealth, 170mm travel
Headset Knock Block 2.0 Integrated, 67-degree radius (includes infinite-radius chip), sealed cartridge bearing, 1-1/8" top, 1.5" bottom
Rear Shock NEW RockShox Super Deluxe Ultimate, DebonAir spring, Thru Shaft 3-position damper, 230 x 62.5mm
Axles Front: 15mm thru axle
Rear: 12mm thru axle
Rims/Wheels Front: NEW Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110
Rear: NEW Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148
Tires Bontrager Team Issue
Crankset E*thirteen LG1 Race Carbon, Boost (55mm chainline)
Chainrings 30T
Bottom Bracket E*thirteen BB20-P, BSA threaded, 73mm width
Chain Shimano XTR M9100, 12 speed
Rear Derailleur Shimano XTR M9100, Shadow Plus, long cage, 51T max cog
Cassette/Rear Cogs Shimano XTR M9100, 10-51, 12 speed
Shifters Shimano XTR M9100, 12 speed
Handlebars Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise, 820mm width
Tape/Grips Bontrager XR Trail Pro, alloy lock-on
Stem Bontrager Line Pro, 35mm, Knock Block, 0 degree, 50mm length
Brakes Shimano XTR M9120 4-piston hydraulic disc w/Shimano RT86, 6-bolt rotors
Pedals Sold Separately
Saddle Bontrager Arvada, austenite rails, 138mm width
Seat Post Bontrager Line Elite Dropper, internal routing, 34.9mm

* Subject to change without notice.


Part Numbers

Option UPC MPN Store SKU
Carbon Blue Smoke / Small 601842548691 5256752 SLA2665700E
Carbon Blue Smoke / Medium 601842548684 5256753 SLA26976704E
Carbon Blue Smoke / Medium/Large 601842548677 5256754 SLA27117143E
Carbon Blue Smoke / Large 601842548660 5256755 SLA26719881E
Carbon Blue Smoke / X-Large 601842548653 5256756 SLA27904646E
Lithium Grey / Small 601842548790 5256742 SLA22931160Y
Lithium Grey / Medium 601842548783 5256743 SLA22192153Y
Lithium Grey / Medium/Large 601842548776 5256744 SLA23496152Y
Lithium Grey / Large 601842548769 5256745 SLA22287352Y
Lithium Grey / X-Large 601842548752 5256746 SLA23556867Y
Factory Orange/Carbon Smoke / Small 601842548745 5256747 SLA35978400E
Factory Orange/Carbon Smoke / Medium 601842548738 5256748 SLA35297232E
Factory Orange/Carbon Smoke / Medium/Large 601842548721 5256749 SLA36775983E
Factory Orange/Carbon Smoke / Large 601842548714 5256750 SLA3517827E
Factory Orange/Carbon Smoke / X-Large 601842548707 5256751 SLA36985636E