35mm is not just any number. Every tiny detail of the most important new product introduced in the 2013 range has been painstakingly optimised to offer the rider perfect balance and performance in all situations. An aerodynamic yet easy to ride wheel that is ideal for long level straights, but still delivers outstanding results uphill. Versatile and aggressive, a wheel created for riders who enjoy pitting themselves against a different type of route every day.Racing Quattro with Shimano Inc. FW body is compatible with 10 and 11 speed sprockets. The Racing Quattro wheel is entirely hand assembled by a specialised FulcrumR technician and is checked in every tiny detail with electronic instrumentation. This ensures maximum performance and reliability for all FulcrumR wheels.