Renthal Ultralight Rear Sprocket 42T 409U-530-42P-HA

Manufactured to extremely tight tolerances. 7075 T6 aluminum alloy rear chainwheels are 66% lighter than steel, yet incredibly durable. Advanced tooth profile, concentricity and accuracy of fit provide maximum power transfer and long-life. Combination of a very high-strength base material and an exceptionally hard-wearing surface result in significantly increased chainwheel life. Most available in ultra-light design. Hard anodized finish for better wear resistance.

• 520 conversions available for certain models