Renthal Rear Sprocket, Aluminum Ultralight, Style 478 (525)

Sprockets set your gearing. One tooth fewer at the front, or a couple more at the rear, makes the bike pull harder out of corners and lifts the front sooner, at the cost of top speed and higher revs on the highway. Going the other way calms it down. Worn sprockets have hooked or pointed teeth and will wear out a new chain quickly.

Fits 15 Aprilia models: see the list below

• CNC machined (not stamped) and feature a computer-aided ultra-light design to reduce unsprung weight and increase power transfer
• Features special tooth profile that allows the chain to roll easily on and off the sprocket for longer wear, less noise and more power
• Model-specific: check the fitment list for your bike

Fits

Every tooth count of this rear sprocket fits the bikes above. Choose the stock count to keep your gearing, or a different one to change it.

Changing tooth counts changes your speedometer reading on most bikes, and may need a different chain length. Replace sprockets and chain together.