The Profile Bolt On Spider was designed to provide optimal chainline when paired with a Profile Euro Outboard bottom bracket. It's machined from a billet aluminium plate & comes supplied with a Cr Mo steel adapter insert already pressed in. The chainring can be mounted on either the inner or outer face of the spider giving you a little more chainline adjustability. section Product Specs Crank Type: Drive Type: Spindle Diameter: Drive Side:
Includes:: BB Bearings: Weight: shogun-image-section