Top Fuel AL Frame Set | Trek Bikes (GB)
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2020

Top Fuel AL Frame Set

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£1,750.00 Model 28508

Top Fuel AL is an aluminium full suspension frame set ideal for building up a seriously fun multi-discipline mountain bike. It combines the lightweight efficiency of a cross country bike with the capability of a short-travel trail bike, so you can spec it to shred trail, race gruelling endurance events, compete in XC races or all of the above.

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It's right for you if...

You want to build up one single full-suspension bike that's super fun to ride on a wide variety of trails. You're looking for a frame that's designed for both efficiency and capability, and are interested in racing endurance events, riding techy descents with friends and even racing XC.

The tech you get

A lightweight Alpha Platinum Aluminium frame with Mino Link adjustable geometry, a 115 mm Fox Performance Float shock with 2-position DPS damper, Knock Block head set and Control Freak internal cable routing. Designed for a 120 mm fork, but can handle up to 130 mm of fork travel.

The final word

Top Fuel AL is the high-value foundation for a versatile full-suspension build. Whether you're hoping to compete in a multi-day stage race or want one single bike that's fast and capable on both flow trails and technical descents, this is the place to start.

The Walkthrough

favorite_borderWhy you'll love it

  1. Alpha Platinum Aluminium is lightweight and trail-tough
  2. Efficient and capable: you can build up this frame set to suit a wide range of trails and races, from XC to endurance
  3. Mino Link lets you make small adjustments to your geometry quickly and easily, even mid-ride
  4. You get a Straight Shot down tube for extra stiffness in the rough and Knock Block frame defence to protect against spinning bars and fork crowns


Features

Will my bike have a curved top tube?

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

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.

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Straight Shot w/Knock Block

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.

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Specifications

*spec applies to all sizes unless otherwise noted

Frameset
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
Shock Fox Performance Float, 2-position DPS damper, TwistLoc remote, tuned by Trek Suspension Lab, 190x45 mm
Suspension lever Fox remote
Max compatible fork travel 130mm
Wheels
Rear skewer Bontrager Switch thru axle, removable lever
Max tyre size 29x2.40"
Drivetrain
Max. chainring size 36T
Components
*Stem Size: S, M, M/L
Bontrager Rhythm Comp, 31.8mm, Knock Block, 0-degree, 60 mm length
Size: L, XL
Bontrager Rhythm Comp, 31.8 mm, Knock Block, 0-degree, 70 mm length
Head set Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8" top, 1.5" bottom
Weight
Weight M - 2.87 kg / 6.33 lbs
Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Bike and frame weights are based on Trek pre-production painted frames at the time of publication. Weights may vary in final production

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 Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.

 

Rider Height

Inseam

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 68.5° 75.5° 9.0 68.0° 56.3 34.3 3.0 43.4 4.4 10.3 111.7 73.0 41.0 59.0
15.5 S Low 39.4 68.0° 75.0° 9.0 67.5° 56.4 33.7 3.6 43.5 4.4 10.7 111.7 72.5 40.5 59.4
17.5 M High 41.9 68.5° 75.5° 9.0 68.0° 59.8 34.3 3.0 43.4 4.4 10.3 115.2 73.5 44.5 59.0
17.5 M Low 41.9 68.0° 75.0° 9.0 67.5° 59.9 33.7 3.6 43.5 4.4 10.7 115.2 73.0 44.0 59.4
18.5 ML High 44.5 68.5° 75.5° 9.0 68.0° 61.4 34.3 3.0 43.4 4.4 10.3 116.8 74.1 46.1 59.0
18.5 ML Low 44.5 68.0° 75.0° 9.0 67.5° 61.5 33.7 3.6 43.5 4.4 10.7 116.8 73.5 45.6 59.4
19.5 L High 47.0 68.5° 75.5° 10.0 68.0° 63.0 34.3 2.9 43.4 4.4 10.3 118.5 75.1 47.5 59.9
19.5 L Low 47.0 68.0° 75.0° 10.0 67.5° 63.2 33.7 3.6 43.5 4.4 10.7 118.6 74.5 47.0 60.3
21.5 XL High 52.1 68.5° 75.5° 11.0 68.0° 65.0 34.3 2.9 43.4 4.4 10.3 120.6 77.1 49.2 60.8
21.5 XL Low 52.1 68.0° 75.0° 11.0 67.5° 65.1 33.7 3.6 43.5 4.4 10.7 120.7 76.5 48.7 61.2

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