Specialized Crux Comp / GRX RX820 12-Speed (2025)

The Crux is the lightest gravel bike in the world, with the exceptional capability of massive tire clearance and performance gravel geometry. It’s not just the ultimate expression of gravel performance, it’s your one-way ticket to gravel enlightenment.

This Crux Comp comes spec'd with a reliable and smooth-shifting Shimano GRX 12-speed groupset, tough DT G540 Disc wheels, and 2Bliss Ready, 700x38mm Pathfinder Pro tires that hookup over nasty terrain.

• Lightest: 725g S-Works 12r and 825g 10r frames. We took the revolutionary breakthroughs that made Aethos the lightest bike ever and applied them to the Crux. The result? A gravel bike that climbs like a dream, floats over nightmarish terrain, and weighs less than a full bottle in your cage.
• Capable: 47c/650b x 2.1” tire clearance. More clearance means more capability. With Diverge-level tire clearance, Crux takes you anywhere you can imagine, at full gas.
• Responsive: Nimble, supple, and reactive. Responsive at the pedals. Supple in the saddle. With performance gravel geometry and race-influenced fit inspired by Crux’s iconic history in ‘cross.

Frame:- FACT 10r Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc

Fork:- FACT Carbon, 12x100mm thru-axle, flat-mount disc

Stem:- 3D-forged alloy, 31.8mm, 7-degree rise

Saddle:- Body Geometry Power Sport, steel rails

SeatPost:- Roval Terra Carbon Seat Post, 20mm Offset

Seat Binder:- Specialized Alloy, 30mm

Handlebars:- Specialized Adventure Gear, 118.9mm drop x 70mm reach x 12º flare

Tape:- Supacaz Super Sticky Kush

Brakeset:- Shimano GRX RX820

Bottom Bracket:- Shimano Threaded BSA BB

Crankset:- Shimano GRX RX820

Chainring:- 40t

Shift Levers:- Shimano GRX RX820, 1x12-speed

Rear Derailleur:- Shimano GRX RX822-GS, 12-speed

Chain:- Shimano XT M8100, 12-speed w/ quick link

Cassette:- Shimano XT, 12-speed, 10-45t

Wheelsets:- DT Swiss G540 rim, 24mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centerlock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples

Inner Tubes:- 700x28/38mm, 48mm Presta valve

TyrePathfinder Pro 2BR, Tan Sidewall, 700x38c