Item # FR-4/ Tools / Cassette & Freewheel
Freewheel Remover — Atom®, etc.
The FR-4 is designed to fit the 20-spline tool fittings found on older SunTour® freewheels. Constructed from heat treated alloy tool steel, the FR-4 features a 1" tool fitting for use with an adjustable wrench, socket, or bench vise.
- Fits 20-spline tool fittings with an approximate outer diameter of 21.6 mm
- Fits Atom®, Regina®, splined Zeus®, and some Schwinn®-approved freewheels
NOTE: To determine your cassette / freewheel type and the appropriate tool for it, please see Determining Cassette / Freewheel Type.