Renthal 121U42852G Ultralight Grooved 52T Rear Sprocket Silver (428 Pitch) • Internal chin channels distribute

• Internal chin channels distribute the air flow evenly through the entire visor surface

* Replaces OEM #'s 27371-76A & 27371-76

• Replaces 74599-77B

• Includes all rubber internal components for 4 piston differential bore calipers

• All Necessary Seals and O-rings Included

Renthal 121U42852G Ultralight Grooved 52T Rear Sprocket Silver (428 Pitch) • Internal chin channels distributeRenthal UltraLight Rear Chainwheels are CNC machined in Manchester, UK from 7075 T6 aluminum to extremely tight tolerances, 66% lighter than steel. Computer engineered and tested to ensure a precise fitment, concentricity and load dispersion with tooth profiling to provide maximum power transfer. With Renthal's combination of high strength base material, cutting edge manufacturing methods and exceptional hardwearing surface treatments its clear to see