The 5DEV Centerlock Rotor Lockring is a lightweight CNC-machined lockring designed for tight-clearance disc brake setups. Made from titanium with a stainless steel shim washer it provides secure rotor retention at just 9 grams. The slim internal spline design allows use with cassette-style lockring tools and fits both 12mm thru axle and quick-release hubs across road gravel bmx and mountain bikes.Ultra lightweight at only 9 grams40mm outside diameterCompatible with rotors up to 220mmInternally spline with a 40nm torque spec