Trek Slash 9.9 XX1 Flight Attendant


SKU: 37060 Category:


Slash 9.9 is the fastest enduro mountain bike in the line-up, 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 with RockShox Flight Attendant, fast-rolling carbon wheels and a SRAM wireless electronic drivetrain and dropper make this top-of-the-line ride the undisputed king of enduro.

You want an enduro ride that offers the whole package – the finest components, light weight and capability all in one. You like to cut loose at top speeds searching for the best line, and then turning around to hammer back to the top to dominate the next stage. You need a bike that can hold its own when the trail gets hairy, and is just as tuned to the terrain as you are.

A full OCLV Mountain Carbon frame with 160 mm of travel and a RockShox Super Deluxe Ultimate shock, plus a RockShox ZEB Ultimate fork with extra-beefy 38 mm stanchions and Flight Attendant auto-adjusting technology. Fully wireless SRAM XX1 Eagle 12-speed drivetrain, a Bontrager RSL integrated bar/stem and Line Pro 30 carbon wheels with a 108-tooth rapid drive hub for instant acceleration when you need it most.

There’s no shortage of fast parts on this ride. It’s equipped head to toe with the industry’s finest components and built for total enduro speed. It eats berms for breakfast, launches rollers for lunch, gobbles rock gardens for dinner and breathes speed. When you’re chasing enduro PRs and podiums, it’s your best friend on dirt.
– You’ll have a ready-to-rip enduro steed that’s just as eager to blast berms as you are
– The OCLV Carbon RSL integrated bar/stem is ultra-light and ultra-comfortable, and it looks awesome
– We added a second down tube guard to better protect your frame from shuttle-related damage
– The RockShox ZEB fork’s bigger 38 mm stanchions help you stay on your line through the chunky stuff, and Flight Attendant keeps your suspension in the right spot at all times
– RockShox Flight Attendant uses wireless sensors in the fork, shock and crank to automatically adjust your suspension damping to the terrain.

Using SRAM AXS technology, Flight Attendant analyses data from sensors on the fork, shock and crank to automatically shift between compression damping modes before the thought ever crosses your mind. It does the thinking for you so you can stay focused and in the zone.

RockShox Super Deluxe Thru Shaft damper
With the all-new RockShox Super Deluxe Ultimate Thru Shaft, you get the most refined shock on the market, with an updated air spring and an exclusive Thru Shaft damper that gives you tenacious grip, plush control and the support you need for ripping rough descents all day.

BITS: Your trail-side saviour
Cleverly integrated into the steerer tube, the included BITS multi-tool has everything you need for trail-side adjustments and repairs.

Active Braking Pivot
Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.

Complete frame protection
Replaceable down tube guards protect the underside of your frame from rock strikes, trail debris and janky shuttle vehicles so you can forget about damage worries and focus on blasting the next run.

OCLV Mountain Carbon
Trek’s mountain-specific carbon fibre is tougher carbon, with unique materials and lay-up procedures, Trek’s advanced engineering, and a higher standard of testing.

Additional information


Size S – 14.7kg


RockShox ZEB Ultimate Flight Attendant, DebonAir spring, Charger 2.1 RCT3 AXS damper, 1.5" tapered steerer, 44 mm offset, Boost110, 15 mm Maxle Stealth, 170 mm travel


SRAM XX1 Eagle, 12-speed


OCLV Mountain Carbon main frame and stays, internal storage, tapered head tube, Knock Block 2.0, Control Freak internal routing, Carbon Armour, shuttle guard, threaded BB, ISCG 05, 34.9 mm seat tube, magnesium rocker link, Mino Link, ABP, Boost148, 160 mm travel




Bontrager Arvada, austenite rails, 138 mm width


Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless-Ready, 6-bolt, Boost110, 15 mm thru-axle
Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, SRAM XD driver, Boost148, 12 mm thru-axle


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


SRAM Eagle XG-1299, 10-52, 12-speed


SRAM XX1 Eagle, Flight Attendant, DUB MTB Wide, 30T alloy ring, 55 mm chain line, 170 mm length
SRAM DUB MTB Wide, 73 m, BSA threaded


RockShox Reverb AXS, 100 mm travel, wireless, 34.9 mm, 340 mm length


SRAM Eagle AXS, wireless, 12-speed // SRAM Eagle AXS, wireless, 12-speed


Bontrager RSL Integrated handlebar/stem, OCLV Carbon, 27.5 mm handlebar rise, 820 mm width, 0-degree stem rise, 35 mm stem length

Front brake

SRAM HS2, 6-bolt, 180mm // SRAM 6-bolt, 200 mm
Max brake rotor size

Derailleur rear


Bartape or grips

Bontrager XR Trail Pro, alloy lock-on

Primary rear brake

SRAM HS2, 6-bolt, 180mm // SRAM 6-bolt, 200 mm
Max brake rotor size

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