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It's right for you if...
You're a mountain biker's mountain biker, and you want a big bike with big wheels to roll over big things that get between you and the next big hit. This bike is both fully capable of handling enduro races, and a whole lot of fun on rowdy trails.
The tech you get
A trail-tough Alpha Platinum Aluminium frame, a 160 mm RockShox Yari RC fork and 150 mm of rear travel with a RockShox Deluxe shock with Trek's ultra-responsive RE:aktiv with Thru Shaft damper. Plus, a SRAM GX Eagle 1x12 drivetrain, a Bontrager Line dropper post and Bontrager Line Comp 30 wheels with a 54-tooth Rapid Drive rear hub for fast engagement.
The final word
Slash 8 puts serious enduro performance within reach with smart choices on spec that won't empty your wallet. The Alpha Aluminium frame, burly suspension, and 1x12 Eagle drivetrain makes for a ride that's equally at home on the race course and on a big, backwoods session.
The Walkthrough
favorite_borderWhy you'll love it
- RE:aktiv with Thru Shaft works faster than a normal shock, so it tracks the ground better and keeps you in control
- Mino Link lets you adjust the geometry, so you get both an enduro race bike and an ultra-capable trail bike in one
- It's equally at home between the tape and in the rugged wild – Yes, Slash is a race bike, but it's ridiculously fun on gnarly trail rides, too
- We're not the only ones who love it: Slash was awarded Mountain Bike of the Year by Pinkbike
Features
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.
Trek's Straight Shot frame design optimises the stiffness-to-weight ratio for a more responsive ride. You'll be able to push harder and stay more planted on your line when the going gets rough.
RE:aktiv with Thru Shaft gives you unmatched grip and control with a shock that reacts to the terrain faster than anything else out there.
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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Mino Link adjustable geometry
Fine tune head tube angle by 1/2° and BB height by up to 10mm with the simple turn of a nut. Just flip the link to choose between slack or slacker geometry, without negatively affecting suspension performance. A Trek exclusive.
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Control Freak cable management
The lightest, quietest, most versatile cable management system allows any combination of shift, brake, lockout and dropper post lines to be routed through the frame for clean looks and the ultimate custom set-up.
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | Alpha Platinum Aluminium, tapered head tube, Knock Block, Control Freak internal routing, downtube guard, ISCG 05, magnesium rocker link, Mino Link, ABP, Boost148, 150 mm travel |
|---|---|
| Fork | RockShox Yari RC, DebonAir spring, Motion Control RC damper, tapered steerer, Boost110, 15 mm Maxle Stealth, 160 mm travel |
| Shock | RockShox Deluxe RT3, DebonAir spring, RE:aktiv with Thru Shaft 3-position damper, tuned by Trek Suspension Lab, 230x57.5 mm |
| Max compatible fork travel | 160mm |
| Wheel front | Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle |
|---|---|
| Wheel rear | Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Rapid Drive 54, SRAM XD driver, Boost148, 12 mm thru axle |
| Hub front | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle |
| Skewer rear | Bontrager Switch thru axle, removable lever |
| Spokes | NA |
| *Tyre |
Size:
S, M, M/L, L, XL Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.40" |
|
Size:
S, M, M/L, L, XL Bontrager XR5 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.60" |
|
| *Tyre part |
Size:
S, M, M/L, L, XL Bontrager TLR valve, 50 mm |
|
Size:
S, M, M/L, L, XL Bontrager TLR sealant |
|
|
Size:
S, M, M/L, L, XL Bontrager TLR sealant, 180 ml/6 oz |
|
| Rim strip | Bontrager TLR |
| Max tyre size | 29x2.60" |
| Shifter | SRAM GX Eagle, 12-speed |
|---|---|
| Rear derailleur | SRAM GX Eagle |
| *Crank |
Size:
S Truvativ Descendant 6k Eagle, DUB, 32T steel ring, Boost, 170 mm length |
|
Size:
M, M/L, L, XL Truvativ Descendant 6k Eagle, DUB, 32T steel ring, Boost, 175 mm length |
|
| Bottom bracket | SRAM DUB, 92 mm, PressFit |
| Cassette | SRAM XG-1275 Eagle, 10-50, 12-speed |
| Chain | SRAM GX Eagle, 12-speed |
| Max. chainring size | 34T |
| Saddle | Bontrager Arvada, hollow chromoly rails, 138 mm width |
|---|---|
| *Seatpost |
Size:
S Bontrager Line Dropper, 100 mm travel, internal routing, 31.6 mm, 345 mm length |
|
Size:
M, M/L Bontrager Line Dropper, 125mm travel, internal routing, 31.6 mm, 395mm length |
|
|
Size:
L, XL Bontrager Line Dropper, 150mm travel, internal routing, 31.6 mm, 440mm length |
|
| Handlebar | Bontrager Line, alloy, 35 mm, 27.5 mm rise, 820 mm width |
| Grips | Bontrager XR Trail Elite, alloy lock-on |
| Stem | Bontrager Line, 35 mm, Knock Block, 0-degree, 50 mm length |
| Head set | Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8" top, 1.5" bottom |
| Brake | SRAM Guide R hydraulic disc, 200 mm front rotor, 180 mm rear rotor |
| *Brake rotor |
Size:
S, M, M/L, L, XL SRAM CenterLine, 6-bolt, round edge, 180 mm |
|
Size:
S, M, M/L, L, XL SRAM CenterLine, 6-bolt, round edge, 200 mm |
| Weight | M - 13.78 kg / 30.38 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 | 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 | 39.4 | 66.1° | 74.9° | 10.0 | 65.6° | 58.0 | 35.2 | 2.1 | 43.3 | 5.1 | 11.4 | 117.1 | 74.6 | 41.6 | 60.8 |
| 15.5 | S | Low | 39.4 | 65.6° | 74.4° | 10.0 | 65.1° | 58.2 | 34.5 | 2.8 | 43.5 | 5.1 | 11.7 | 117.2 | 74.0 | 41.0 | 61.2 |
| 17.5 | M | High | 41.9 | 66.1° | 74.9° | 10.0 | 65.6° | 59.5 | 35.2 | 2.1 | 43.3 | 5.1 | 11.4 | 118.6 | 75.9 | 43.1 | 60.8 |
| 17.5 | M | Low | 41.9 | 65.6° | 74.4° | 10.0 | 65.1° | 59.7 | 34.5 | 2.8 | 43.5 | 5.1 | 11.7 | 118.7 | 75.3 | 42.5 | 61.2 |
| 18.5 | ML | High | 44.5 | 66.1° | 74.9° | 10.5 | 65.6° | 61.1 | 35.2 | 2.1 | 43.3 | 5.1 | 11.4 | 120.3 | 76.5 | 44.6 | 61.3 |
| 18.5 | ML | Low | 44.5 | 65.6° | 74.4° | 10.5 | 65.1° | 61.3 | 34.5 | 2.8 | 43.5 | 5.1 | 11.7 | 120.4 | 75.9 | 44.0 | 61.7 |
| 19.5 | L | High | 47.0 | 66.1° | 74.9° | 11.0 | 65.6° | 62.6 | 35.2 | 2.1 | 43.3 | 5.1 | 11.4 | 121.9 | 77.0 | 45.9 | 61.8 |
| 19.5 | L | Low | 47.0 | 65.6° | 74.4° | 11.0 | 65.1° | 62.7 | 34.5 | 2.8 | 43.5 | 5.1 | 11.7 | 121.9 | 76.4 | 45.3 | 62.2 |
| 21.5 | XL | High | 52.1 | 66.1° | 74.9° | 12.5 | 65.6° | 65.1 | 35.2 | 2.1 | 43.3 | 5.1 | 11.4 | 124.7 | 78.0 | 48.1 | 63.1 |
| 21.5 | XL | Low | 52.1 | 65.6° | 74.4° | 12.5 | 65.1° | 65.3 | 34.5 | 2.8 | 43.5 | 5.1 | 11.7 | 124.8 | 77.4 | 47.5 | 63.5 |