Driven front sprockets are made of case hardened steel and hard anodized for strength, allowing holes to be drilled to reduce overall weight and mass. Every sprocket is checked and tested to ensure the highest quality and reliability to satisfy the demands of today's high powered machines. We use Driven sprockets on our YZF-R1 race bike and have been very impressed with their longevity and performance.

Note: 2015 R1 owners – Your front sprocket must be mounted reversed, with logos and lettering facing inward for proper drivetrain alignment. This ensures perfect fit until Driven begins laser etching the reverse side of this sprocket specifically for the 2015 R1 / R1M