The FR-4 is engineered for older SunTour® freewheels with 20-spline tool fittings, making it essential for vintage bike maintenance.
Forged from heat-treated alloy tool steel, this remover delivers durability and precision. The 1" tool fitting accommodates standard adjustable wrenches, sockets, or bench vices, giving you flexibility in how you work. Perfect for restoring Atom, Regina, and Zeus freewheel models to their original performance.
Features
- Fits 20-spline tool fittings with an approximate outer diameter of 21.6 mm
- Fits Atom®, Regina®, splined Zeus®, and some Schwinn®-approved freewheels
- 1" hexagonal base can be used with 1" socket or wrench
Compatibility
- Atom®
- Regina®
- Splined Zeus®
- Schwinn® Approved
Contents
- 1 x Park Tool FR-4 Freewheel Remover
