Madera Memo #7: Madera Helm Sprocket Unbagging

BMX – Madera Memo #7 – Unbagging – Helm Sprocket Learn all about Madera’s classic and tough Helm sprocket. Click play to see the sprocket, hear the specs, and understand why it’s so awesome! More info and link for purchase below. The Madera Helm Spline Drive Sprocket – American Made […]