Endureon Chain Wheel with 5/16" Bearings, for 520 Chain

Hyper Racing's exclusive Endureon Chain Wheels  fits almost any chain tensioner and has several defining characteristics that make them stand out from the competition.
 

• Larger in diameter to greatly increase life and decrease rolling resistance.
• Made from tough dual monomers that have 6 carbon atoms, (C12H22N2O2) otherwise known as Nylon 6/6. This material is more expensive, but we think it is worth it.
• Undercut where feasible to keep the weight to a minimum.
• Chain groove prevents initial wear in and increases life.