The Mavic Rear Adapter allows you to tweak the size to accommodate your next fork when you upgrade. The Wheel must be ITS-4 Compatible for conversion. Compatible with 2011 and 2012 wheels. Makes your wheel compatible with 142x12mm Syntace drop out design.Details:

• Works with ITS-4 Compatible Wheels
• Compatible with 2011 and 2012 Wheels
• Converts from 10mmx130-135mm to 12mmx142mm