The Madera Helm Spline Drive sprocket is manufactured from 7075 Aluminum in the USA. This sprocket requires no sprocket bolt. Instead, it has a hardened CrMo steel insert in that matches up to the 48 splines on the BB axle for pure, direct power transfer. Work on 19mm spindles only.
Seen this cheaper elsewhere? We price match any legitimate competitor!
- Free Delivery Over €99 in Germany
- Free Delivery Over €179.95 (EU*)
- Standard Delivery From €5.95
- Express Delivery Available
- 90 Day hassle free returns
- *Excludes Some Regions
90 Day Returns
Europe's #1 BMX Shop
100% Secure Shopping
Trustpilot rate US excellent