Sturmey Archer Gear Ring HSA443

This Sturmey Archer gear ring is the complete gear ring assembly used in modern 3-speed NIG (No-Intermediate-Gear) hubs, forming the heart of the planetary drive system. It carries the internal teeth that mesh with the planet gears, so a worn or damaged ring can lead to rough running, noise, or slipping when you pedal. Replacing it with this genuine assembly restores clean engagement and smooth, efficient drive on city, touring, and everyday bikes that rely on Sturmey Archer 3-speed hubs. Used in a wide range of current Sturmey Archer 3-speed hubs such as S-RF3, TS-RB3, X-RD3 drum brake, and SRK3 cassette-type hubs, this complete unit lets you rebuild the internal mechanism correctly instead of guessing with non-original parts. It’s a smart choice during a full hub overhaul or when you’re bringing a well-used commuter or utility bike back to full health for reliable daily riding.

- Complete gear ring assembly for Sturmey Archer 3-speed NIG internal gear hubs
- Forms the main internal drive ring that engages the planet gears for forward motion
- Used in hubs such as S RF3, TS RB3, X RD3 drum brake, and SRK3 cassette-style three-speed hubs
- Ideal replacement when the original gear ring is worn, chipped, or causing rough, noisy drive
- Genuine Sturmey Archer part engineered to match factory dimensions and tooth profile
- Essential component for thorough hub overhauls on city, trekking, and utility bikes
- Supplied as a complete assembly for straightforward installation during a hub rebuild

Specifications
Brand: Sturmey Archer
Model: HSA443
Type: Gear ring
Color: Black