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Trek Procaliber AL Frameset - 2021

Trek Procaliber AL Frameset
Matte/Gloss Black
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Procaliber AL Frameset is a race-worthy cross country mountain bike with the unique advantage of IsoSpeed, a decoupler at the top tube/seat tube junction that provides additional compliance on rough trails. This Alpha Platinum Aluminum frameset is a wallet-friendly start to a lightweight XC build for your fastest singletrack rides ever.

It's right for you if...
You like to go fast, and also love the idea of a hardtail with frame tech designed to take the edge off rough singletrack. Speed is your main consideration, but comfort is right up there, too.

The tech you get
A lightweight Alpha Platinum Aluminum frame with IsoSpeed, a tapered head tube, and internal derailleur routing. Procaliber AL Frameset includes a headset and is designed for a PF92 bottom bracket, post-mount disc brakes, and Boost148 wheels.

The final word
Procaliber AL is a lightweight aluminum mountain bike frameset built in Trek's trail heritage. It's fast, responsive, and it comes in at a great value, but the biggest advantage is the trail-smoothing IsoSpeed decoupler, which takes the edge off fatiguing bumps in the trail so you can stay stronger longer.

Why you'll love it
- The IsoSpeed decoupler makes it ride smoother than any other hardtail, so your body doesn't get beat up by trail chatter
- Internal cable routing extends the life of your cables and adds to the bike's sleek look
- This Alpha Platinum Aluminum frame is race-light and trail-tough

Wheel size:
Sizes X-Small–Small: 27.5-inch
Sizes Medium–XX-Large: 29-inch


Frame Alpha Platinum Aluminum, IsoSpeed, tapered head tube, internal derailleur routing, balanced post mount brake, 12mm thru axle
Headset FSA IS-2, 1-1/8'' top, 1.5'' bottom
Axles Rear: 148 x 12 (Boost)
Bottom Bracket PF92, sold separately
Fork Compatibility 100mm tapered
Wheel Compatibility 29-inch

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Matte/Gloss Black / X-Small / 27.5-inch 601842152447 586828 PRO30522884K
Matte/Gloss Black / Small / 27.5-inch 601842152454 586829 PRO29899793K
Matte/Gloss Black / Medium / 29-inch 601842152461 586831 PRO28491787K
Matte/Gloss Black / Medium/Large / 29-inch 601842152478 586832 PRO2969698K
Matte/Gloss Black / Large / 29-inch 601842152485 586833 PRO28796274K
Matte/Gloss Black / X-Large / 29-inch 601842152492 586834 PRO29430172K
Matte/Gloss Black / XX-Large / 29-inch 601842152508 586835 PRO3014869K