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 and comes supplied with a CrMo 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.

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Product Specs

1. Crank Type: Bolt On
2. Drive Type:
3. Spindle Diameter:
4. Drive Side:
5. Includes BB Bearings:
6. Weight:

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