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It's right for you if...
You’re looking for a do-it-all full suspension mountain bike that balances efficiency with shred-ability. You want to rip rough descents, fly up climbs and even do a couple XC races.
The tech you get
A lightweight aluminium frame, 120 mm RockShox Recon Gold RL fork with plush DebonAir spring, 115 mm of rear travel with a FOX Performance Float shock and a lighter SRAM NX Eagle drive train. Plus, hydraulic disc brakes, Bontrager DropLock dual remote suspension lockout and a Bontrager Line Dropper.
The final word
Top Fuel 8 gets you the value of an alloy frame with drive train, fork and brake upgrades that keep up as you progress in speed and skill.
The Walkthrough
favorite_borderWhy you'll love it
- This short-travel bike has a killer suspension set-up reminiscent of the all-mighty mullet – it's both efficient and ready to party
- Bontrager DropLock's shifter-style lever lets you easily lock out both front and rear shocks at the same time for added sprinting or climbing efficiently. Plus, it controls your dropper post too
- Mino Link lets you make small adjustments to your geometry quickly and easily, even mid-ride
- You get a Straight Shot downtube for extra-stiff, responsive handling without added weight and a Knock Block headset that protects against spinning bars and fork crowns
Features
Will my bike have a curved top tube?
Smaller frames (S) have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. The larger frames (M and ML) have a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height.
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.
Straight Shot downtube
Straight Shot downtube gives you an extra-stiff frame without adding any weight, so you can stick your line through the rough stuff and still fly up the next climb.
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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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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Bontrager DropLock Lever
One easy-to-use lever locks out your suspension and controls your dropper post with no unnecessary handlebar clutter.
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, magnesium rocker link, Mino Link, ABP, Boost148, 115 mm travel |
|---|---|
| Fork | RockShox Recon Gold RL, Solo Air spring, Motion Control damper, tapered steerer, 42 mm offset, Boost110, 15 mm Maxle Stealth, 120 mm travel |
| *Shock |
Size:
S, M, M/L, L, XL, XXL Fox Performance Float, 2-position DPS damper, Bontrager DropLock remote, 190x45mm |
|
Size:
S, M, M/L, L, XL, XXL Fox Performance Float, 2-position DPS damper, TwistLoc remote, tuned by Trek Suspension Lab, 190x45 mm |
|
| Suspension lever | Bontrager Drop Lock remote |
| Max compatible fork travel | 130mm |
| Hub front | Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle |
|---|---|
| Skewer rear | Bontrager Switch thru axle, removable lever |
| Rim | Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23 mm width, Presta valve |
| Tyre | Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.40" |
| *Tyre part |
Size:
S, M, M/L, L, XL, XXL Bontrager TLR sealant, 180 ml/6 oz |
|
Size:
S, M, M/L, L, XL, XXL Bontrager TLR valve, 50 mm |
|
| Rim strip | Bontrager TLR |
| Max tyre size | 29x2.40" |
| Shifter | SRAM NX Eagle, 12-speed |
|---|---|
| Rear derailleur | SRAM NX Eagle |
| *Crank |
Size:
S SRAM NX Eagle, DUB, 32T steel ring, Boost, 170 mm length |
|
Size:
M, M/L, L, XL, XXL SRAM NX Eagle, DUB, 32T steel ring, Boost, 175 mm length |
|
| Bottom bracket | SRAM DUB, 92 mm, PressFit |
| Cassette | SRAM PG-1230 Eagle, 11-50, 12-speed |
| Max. chainring size | 36T |
| Saddle | Bontrager Arvada, steel 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, L, XL, XXL Bontrager Line Dropper, 150mm travel, internal routing, 31.6 mm, 440mm length |
|
| Handlebar | Bontrager Comp, alloy, 31.8 mm, 15 mm rise, 750 mm width |
| Grips | Bontrager XR Trail Comp, nylon lock-on |
| *Stem |
Size:
S, M, M/L Bontrager Rhythm Comp, 31.8mm, Knock Block, 0-degree, 60 mm length |
|
Size:
L, XL, XXL Bontrager Rhythm Comp, 31.8 mm, Knock Block, 0-degree, 70 mm length |
|
| Brake | SRAM Level T hydraulic disc |
| *Brake rotor |
Size:
S, M, M/L, L, XL, XXL SRAM CenterLine, 6-bolt, round-edge, 160 mm |
|
Size:
S, M, M/L, L, XL, XXL SRAM CenterLine, 6-bolt, round edge, 180 mm |
| Weight | M - 13.66 kg / 30.12 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
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local retailer.
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"
2XL
195.0 - 203.0 cm
6'4.8" - 6'7.9"
92.0 - 95.0 cm
36.2" - 37.4"
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" | 39.4 | 68.5° | 75.5° | 9.0 | 68.0° | 56.3 | 34.3 | 3.0 | 43.4 | 4.4 | 10.3 | 111.7 | 72.1 | 41.0 | 59.0 |
| 15.5 | S | Low | 29" | 39.4 | 68.0° | 75.0° | 9.0 | 67.5° | 56.4 | 33.7 | 3.6 | 43.5 | 4.4 | 10.7 | 111.7 | 71.5 | 40.5 | 59.4 |
| 17.5 | M | Low | 29" | 41.9 | 68.0° | 75.0° | 9.0 | 67.5° | 59.9 | 33.7 | 3.6 | 43.5 | 4.4 | 10.7 | 115.2 | 72.0 | 44.0 | 59.4 |
| 17.5 | M | High | 29" | 41.9 | 68.5° | 75.5° | 9.0 | 68.0° | 59.8 | 34.3 | 3.0 | 43.4 | 4.4 | 10.3 | 115.2 | 72.6 | 44.5 | 59.0 |
| 18.5 | ML | Low | 29" | 44.5 | 68.0° | 75.0° | 9.0 | 67.5° | 61.5 | 33.7 | 3.6 | 43.5 | 4.4 | 10.7 | 116.8 | 72.5 | 45.6 | 59.4 |
| 18.5 | ML | High | 29" | 44.5 | 68.5° | 75.5° | 9.0 | 68.0° | 61.4 | 34.3 | 3.0 | 43.4 | 4.4 | 10.3 | 116.8 | 73.1 | 46.1 | 59.0 |
| 19.5 | L | High | 29" | 47.0 | 68.5° | 75.5° | 10.0 | 68.0° | 63.0 | 34.3 | 2.9 | 43.4 | 4.4 | 10.3 | 118.5 | 74.1 | 47.5 | 59.9 |
| 19.5 | L | Low | 29" | 47.0 | 68.0° | 75.0° | 10.0 | 67.5° | 63.2 | 33.7 | 3.6 | 43.5 | 4.4 | 10.7 | 118.6 | 73.5 | 47.0 | 60.3 |
| 21.5 | XL | High | 29" | 52.1 | 68.5° | 75.5° | 11.0 | 68.0° | 65.0 | 34.3 | 2.9 | 43.4 | 4.4 | 10.3 | 120.6 | 76.1 | 49.2 | 60.8 |
| 21.5 | XL | Low | 29" | 52.1 | 68.0° | 75.0° | 11.0 | 67.5° | 65.1 | 33.7 | 3.6 | 43.5 | 4.4 | 10.7 | 120.7 | 75.5 | 48.7 | 61.2 |
| 23.0 | XXL | High | 29" | 55.9 | 68.5° | 75.5° | 12.0 | 68.0° | 67.5 | 34.3 | 2.9 | 43.4 | 4.4 | 10.3 | 123.3 | 77.6 | 51.5 | 61.7 |
| 23.0 | XXL | Low | 29" | 55.9 | 68.0° | 75.0° | 12.0 | 67.5° | 67.7 | 33.7 | 3.6 | 43.5 | 4.4 | 10.7 | 123.4 | 77.0 | 51.0 | 62.2 |
