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It's right for you if...
You're looking to tackle huge days on huge mountains, whether it's an enduro race or an epic adventure. You want the light weight and muted vibes of a carbon frame, and you prioritise tunable suspension performance over a shiny top-shelf drive train.
The tech you get
A full OCLV Mountain Carbon frame with 160 mm of travel and an all-new RockShox Super Deluxe Ultimate shock with an updated Thru Shaft damper, plus an all-new RockShox ZEB fork with extra-beefy 38 mm stanchions. A Shimano XT 12-speed drive train for super-smooth shifting that's easy on the thumb and Line Elite 30 carbon wheels with a 108-tooth Rapid Drive hub for quick acceleration when you need it most.
The final word
This is a beast of a mountain bike. You get hot new suspension technology normally reserved for the most expensive bikes, and you get it on a fresh new frame. With Slash 9.8, the faster you go, the better it rides, so giddy-up.
The Walkthrough
favorite_borderWhy you'll love it
- The RockShox ZEB fork's bigger 38 mm stanchions help you stay on your line through the chunky stuff, while the updated damper lets you dial in the feel
- 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 34.9 mm diameter post is stronger, more durable, and moves up and down faster
Winner – Mountain Bike category
'The combination of high-end performance with individuality and user-friendliness in the thought-through package delighted the entire jury.'
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‘Feels exactly right’
‘The Slash has a big-bike feel that makes it easier to charge into an unfamiliar trail, while retaining enough manoeuvrability to prevent it from feeling like overkill on mellower trails.’
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‘A hell of a bike’
‘Slash is great on rough, bermed corners and it has been an absolute monster riding steeps. This is an easy bike to ride and everything felt very natural from the first drop in and I haven’t looked back since.’
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‘Doesn’t just tick all the boxes, it slashes them’
‘It’s playful enough to pop lips and gun for natural trail doubles, yet stable enough to stay planted in the steepest, gnarliest rock gardens I could seek out. The Slash is an absolute joy to ride, and the faster and harder you push it, the more at home it feels.’
Read moreFeatures
Internal frame storage makes it easy to ditch the pack and still carry your ride essentials.
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.
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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.
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.
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Suspension Calculator
This suspension calculator will help you optimise your suspension settings for your riding weight. Simply follow the steps to find your best set up.
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Complete Tubeless System
Tubeless Ready rims and tyres make it easy to ditch the tubes so you get better traction, fewer flats and less weight. You're ready to roll straight out of the box with the included TLR rim strips, valves and sealant.
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Oversized 34.9mm dropper post
Bigger is better. The oversized seat tube diameter gives more support and strength for longer travel droppers, and allows for more robust, durable internals that work faster.
Carbon Care Wheel Loyalty Programme
Every set of Bontrager carbon wheels is backed by the Carbon Care Wheel Loyalty Programme. In the unlikely event that you damage your Bontrager carbon wheels within the first two years of ownership, we’ll repair or replace them for free.
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Knock Block
Knock Block has your frame's back when things go wrong. It prevents your handlebars from spinning all the way around in a crash, so your hoses won't get yanked and your controls won't hit the top tube.
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Rapid Drive 108 rear hub
With 108 points of engagement, Rapid Drive gives you nearly instant acceleration instead of a clunky lag when you step on the pedals. You get smooth, immediate power to blast out of corners and hammer through the rough stuff. And that extra pedal ratchet adds control that can make all the difference when tackling a tricky climb.
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | 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 |
|---|---|
| Fork | RockShox ZEB Select+, DebonAir spring, Charger 2.1 RC damper, tapered steerer, 44 mm offset, Boost110, 15 mm Maxle Stealth, 170 mm travel |
| Shock | NEW RockShox Super Deluxe Ultimate, DebonAir spring, Thru Shaft 3-position damper, 230x62.5 mm |
| Max compatible fork travel | 180mm (596mm axle-to-crown) |
| Wheel front | NEW Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle |
|---|---|
| Wheel rear | NEW Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru axle |
| Hub front | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle |
| Hub rear | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru axle |
| Skewer rear | Bontrager Switch thru-axle, removable lever |
| *Tyre |
Size:
S , M , ML , L , XL Bontrager SE4 Team Issue, Tubeless Ready, Core Strength sidewall, aramid bead, 60 tpi, 29x2.40" |
|
Size:
S , M , ML , L , XL Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewall, aramid bead, 60 tpi, 29x2.60" |
|
| *Tyre part |
Size:
S , M , ML , L , XL Bontrager TLR sealant, 180 ml/6 oz |
|
Size:
S , M , ML , L , XL Bontrager TLR valve, 50 mm |
|
| Rim strip | Bontrager TLR |
| Max tyre size | 29x2.50" |
| Shifter | Shimano XT M8100, 12-speed |
|---|---|
| Rear derailleur | Shimano XT M8100, long cage, 51T max cog |
| *Crank |
Size:
S Shimano XT M8120, 30T, Boost (55 mm chain line), 170 mm length |
|
Size:
M , ML , L , XL Shimano XT M8120, 30T, Boost (55 mm chain line), 175 mm length |
|
| Bottom bracket | Shimano SM-BB52, 73 mm, threaded external bearing |
| Cassette | Shimano XT M8100, 10-51, 12-speed |
| Chain | Shimano XT M8100, 12-speed |
| Max. chainring size | Max: 34T, Min 28T |
| Saddle | Bontrager Arvada, austenite rails, 138 mm width |
|---|---|
| *Seatpost |
Size:
S Bontrager Line Elite Dropper, 100 mm travel, MaxFlow, internal routing, 34.9 mm, 345 mm length |
|
Size:
M , ML Bontrager Line Elite Dropper, 150 mm travel, MaxFlow, internal routing, 34.9 mm, 440 mm length |
|
|
Size:
L Bontrager Line Elite Dropper, 170 mm travel, MaxFlow, internal routing, 34.9 mm, 485 mm length |
|
|
Size:
XL Bontrager Line Elite Dropper, 200 mm travel, MaxFlow, internal routing, 34.9 mm, 550 mm length |
|
| Handlebar | Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise, 820mm width |
| Grips | Bontrager XR Trail Pro, alloy lock-on |
| Stem | Bontrager Line Pro, 35 mm, Knock Block, Blendr-compatible, 0-degree, 35 mm length |
| Head set | Knock Block 2.0 Integrated, 72-degree radius (includes infinite-radius chip), sealed cartridge bearing, 1-1/8" top, 1.5" bottom |
| Brake | Shimano SLX M7120 4-piston hydraulic disc |
| *Brake rotor |
Size:
S , M , ML , L , XL Shimano RT66, 6-bolt, 180 mm |
|
Size:
S , M , ML , L , XL Shimano RT66, 203 mm, 6-bolt |
| Weight | M - 14.26 kg / 31.44 lbs (with TLR sealant, no tubes) |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb). |
Sizing & fit
Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorised retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.
Rider Height
Inseam
S
153.0 - 166.5 cm
5'0.2" - 5'5.6"
72.0 - 79.0 cm
28.3" - 31.1"
M
161.0 - 172.0 cm
5'3.4" - 5'7.7"
76.0 - 81.0 cm
29.9" - 31.9"
M/L
165.5 - 179.0 cm
5'5.2" - 5'10.5"
77.0 - 84.0 cm
30.3" - 33.1"
L
177.0 - 188.0 cm
5'9.7" - 6'2.0"
83.0 - 88.0 cm
32.7" - 34.6"
XL
186.0 - 196.0 cm
6'1.2" - 6'5.2"
87.0 - 92.0 cm
34.3" - 36.2"
All measurements provided in cm unless otherwise stated.
| Frame size number | Frame size letter | Geometry position | Wheel size | A — Seat tube | B — Seat tube angle | Effective seat tube angle | C — Head tube length | D — Head angle | E — Effective top tube | F — Bottom bracket height | G — Bottom bracket drop | H — Chainstay length | I — Offset | J — Trail | K — Wheelbase | L — Standover | M — Frame reach | N — Frame stack |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15.5 | S | High | 29" | 39.5 | 67.1° | 76.1° | 10.0 | 64.6° | 58.4 | 35.2 | 2.2 | 43.5 | 4.3 | 13.0 | 119.7 | 71.1 | 43.1 | 61.8 |
| 15.5 | S | Low | 29" | 39.5 | 66.6° | 75.6° | 10.0 | 64.1° | 58.5 | 34.5 | 2.9 | 43.7 | 4.3 | 13.4 | 119.7 | 70.5 | 42.5 | 62.1 |
| 17.5 | M | High | 29" | 42.0 | 67.1° | 76.1° | 10.0 | 64.6° | 60.9 | 35.2 | 2.2 | 43.5 | 4.3 | 13.0 | 121.2 | 74.9 | 45.6 | 61.8 |
| 17.5 | M | Low | 29" | 42.0 | 66.6° | 75.6° | 10.0 | 64.1° | 61.0 | 34.5 | 2.9 | 43.7 | 4.3 | 13.4 | 122.2 | 74.3 | 45.0 | 62.2 |
| 18.5 | ML | High | 29" | 43.5 | 67.1° | 76.1° | 10.5 | 64.6° | 62.8 | 35.2 | 2.2 | 43.5 | 4.3 | 13.0 | 124.2 | 74.9 | 47.4 | 62.2 |
| 18.5 | ML | Low | 29" | 43.5 | 66.6° | 75.6° | 10.5 | 64.1° | 62.9 | 34.5 | 2.9 | 43.7 | 4.3 | 13.4 | 124.3 | 74.3 | 46.9 | 62.6 |
| 19.5 | L | High | 29" | 45.0 | 67.1° | 76.1° | 11.5 | 64.6° | 64.7 | 35.2 | 2.2 | 43.5 | 4.3 | 13.0 | 126.3 | 75.9 | 49.1 | 63.1 |
| 19.5 | L | Low | 29" | 45.0 | 66.6° | 75.6° | 11.5 | 64.1° | 64.9 | 34.5 | 2.9 | 43.7 | 4.3 | 13.4 | 126.4 | 75.3 | 48.6 | 63.5 |
| 21.5 | XL | High | 29" | 50.0 | 67.1° | 76.1° | 14.0 | 64.6° | 68.3 | 35.2 | 2.2 | 43.5 | 4.3 | 13.0 | 130.4 | 77.9 | 52.1 | 65.4 |
| 21.5 | XL | Low | 29" | 50.0 | 66.6° | 75.6° | 14.0 | 64.1° | 68.4 | 34.5 | 2.9 | 43.7 | 4.3 | 13.4 | 130.5 | 77.3 | 51.6 | 65.8 |