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It's right for you if...
You’re looking to build up a super light and capable cross country race bike. You know you want the efficient yet plush ride our IsoStrut shock provides, but you want to spec the rest with parts you've hand-picked to suit your preference.
The tech you get
An ultra-lightweight, full OCLV Mountain Carbon frame with 60mm of travel and Trek's exclusive IsoStrut Fox Performance shock designed specifically for Supercaliber. Plus, Control Freak internal routing and a Knock Block headset.
The final word
Supercaliber Frameset lets you build up a pro-level cross country race bike just the way you like it. The OCLV Mountain Carbon frame is lightweight and strong, and comes with our exclusive IsoStrut shock for efficient capability.
See it in action
favorite_borderWhy you'll love it
- Supercaliber is a World Cup-worthy bike that’s quick, capable of soaring through techy terrain, and nearly as light as a hardtail
- Our exclusive IsoStrut shock provides tuneable, damped suspension for a smooth and efficient ride
- Pivotless seat stays save on weight and actively bend to help soak up trail chatter
"Dutch MTB of the Year"
"A thoroughbred cross country race bike. A light hardtail with the comfort of a fully. Truly the winner of 2020."
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"2020 Mountain Bike of the Year"
Supercaliber earned top honors from BIKE Spain, whose editors said this innovative ride delivered "twice the highest performance" they'd ever tested.
"The new XC race benchmark"
"It's simply everything you want from an XC race bike. If someone riding a Supercaliber beats you next season, take solace in the fact that their bike is faster than yours."
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"Does it deliver? Yes!"
"Locked out, Supercaliber climbs as well as a fully rigid bike, but with the fork and shock open, the bike has gobs of traction heading uphill and minimal pedal feedback in the suspension. Descending, it's much more sure-footed in technical terrain than a hardtail and feels like it has way more travel than it really does."
Read moreFeatures
Nothing else like it
Supercaliber’s unique frame design ditches traditional suspension hardware so there’s less weight, less maintenance, and less lateral flex. IsoStrut connects the mainframe to the pivot-less seat stays to offer about 60mm of rear wheel travel. This design offers a unique blend of efficiency, traction, and fatigue-fighting compliance that keeps racers fresh and in control.
IsoStrut integrated suspension gives you just enough travel to stay in control. It's fully tuneable like a standard rear shock, but without the weight penalty of a full suspension bike.
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OCLV Mountain Carbon
Trek's mountain-specific carbon is engineered to withstand the extreme demands of off-road racing. Advanced analysis allows our designers to create a frame with the best blend of light weight, responsiveness, and just enough compliance in the seat stays to eliminate the need for a heavy rear pivot system.
Trek's Straight Shot frame design optimizes 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.
Suspension Calculator
This suspension calculator will help you optimize your suspension settings for your riding weight. Simply follow the steps to find your best set up.
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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 setup.
Water bottle capacity
Space for two water bottles makes it easier to stay hydrated on long days.
Boost148/110
Wider dropouts (110mm front, 148mm rear) give you the stiffness of a 27.5" wheel with all the benefits of a 29" wheel, and Boost148 in the rear lets you run wider tires and a larger chainring without affecting q-factor and pedaling efficiency.
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | OCLV Mountain Carbon main frame & stays, IsoStrut, tapered head tube, Knock Block, Control Freak internal routing, Boost148, 60mm travel |
|---|---|
| Shock | Trek IsoStrut, Fox Performance shock, air spring, DPS 2-position remote damper, 235x32.5mm |
| Suspension lever | Fox 2-position |
| Max compatible fork travel | 120mm |
| Skewer rear | Bontrager Switch thru axle, removable lever |
|---|
| Headset | Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom |
|---|
| Weight | M - 1.96 kg / 4.31 lbs |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). |
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 noted.
| Frame size number | Frame size letter | 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 | 39.4 | 70.0° | 74.0° | 9.0 | 69.0° | 56.5 | 32.0 | 5.3 | 43.0 | 4.4 | 9.6 | 107.9 | 75.0 | 39.5 | 59.4 |
| 17.5 | M | 41.9 | 70.5° | 74.0° | 9 | 69.0° | 59.5 | 32.0 | 5.3 | 43.0 | 4.4 | 9.6 | 110.6 | 76.0 | 42.5 | 59.4 |
| 18.5 | ML | 44.5 | 70.5° | 74.0° | 9 | 69.0° | 61.0 | 32.0 | 5.3 | 43.0 | 4.4 | 9.6 | 112.1 | 76.0 | 44.0 | 59.4 |
| 19.5 | L | 47.0 | 71.0° | 74.0° | 9 | 69.0° | 62.5 | 32.0 | 5.3 | 43.0 | 4.4 | 9.6 | 113.6 | 78.7 | 45.5 | 59.4 |
| 21.5 | XL | 50.8 | 71.0° | 74.0° | 10.5 | 69.0° | 65.9 | 32.0 | 5.3 | 43.0 | 4.4 | 9.6 | 117.2 | 78.7 | 48.5 | 60.8 |
| 23 | XXL | 54.6 | 71.0° | 74.0° | 12 | 69.0° | 68.3 | 32.0 | 5.3 | 43.0 | 4.4 | 9.6 | 119.7 | 78.7 | 50.5 | 62.2 |
