Park tools quality and performance

3 x 56 x 47

high durometer urethane bump stopper (between the RD and the dropout) was added to reduce impact noise

The Ruffian MX builds on them by adding a half-waffle pattern for increased control

chances are you'll need to put a lever internals kit through it to freshen it up

Cane Creek Ten Series Headset Bottom Assembly - Black - ZS56-40 Do Not Ship Internationally Park tools quality and performanceThe 10 Series has the look and feel of Cane Creek's class leading 40 Series headsets with simpler machining and more economical materials. Designed with the upgrade path in mind, the 10 Series shares the internal geometry of Cane Creek's higher end headsets and, as a result, replacement and upgrade parts are readily available. Series Features: Cups and Covers: 6061 T 6 Aluminum Crown Race: Split Glass Reinforced Polyamide Bearings: Black Oxide Covers: