The Specialized Formula Freehub (FH-528) is built from steel and relies on a 3-pawl engagement mechanism to transfer power from the cassette to the rear hub. It carries an HG11 spline pattern, matching Shimano 11-speed road cassettes, and ships with a threaded drive-side end cap already fitted for straightforward installation on compatible hubs.
This freehub body is sized for 142 x 12mm thru-axle rear hubs and fits Formula FH-528 hubs, including the 2018 Axis Elite and DT R470 Disc versions. It serves as a replacement or spare part for Specialized models such as Allez, Crux, Diverge, Roubaix, Ruby, and Tarmac, keeping the drivetrain ready for Shimano 11-speed setups.
Quick Facts
| Feature |
Specification |
| Material |
Steel construction |
| Pawl system |
3-pawl engagement mechanism |
| Speed compatibility |
Shimano 11-speed road (HG11) |
| End cap |
Threaded drive-side end cap included |
| Hub compatibility |
Formula FH-528, 142 x 12mm thru-axle, Axis Elite and DT R470 Disc hubs |