The RK 4107-040EX Chain and Sprocket Kit is an OEM replacement drivetrain solution designed for the Yamaha YZF-R1 model years 2004-2005. This motorcycle chain and sprocket set combines OE gearing with durable Driven® sprockets to provide dependable fitment, smooth power transfer, and long-mileage performance for street and sport riding applications.
The kit includes a premium Driven® C45 steel alloy rear sprocket with a black case-hardened finish, paired with a Driven® C45 steel front sprocket that is case hardened and quenched for enhanced durability. The sprocket construction is engineered to withstand the demanding loads produced by the Yamaha YZF-R1 engine while supporting consistent chain engagement and reliable drivetrain operation.
As an RK OEM Replacement kit, the 4107-040EX is designed to match original-equipment gearing for straightforward replacement and predictable riding characteristics. It is a practical choice for maintaining the factory performance of a Yamaha YZF-R1 from 2004 or 2005 when the original chain and sprockets show wear. Confirm the motorcycle model and year before installation to ensure proper fitment.
Features:
- Fitment: Designed for Yamaha YZF-R1 motorcycles from 2004-2005
- Kit Type: OEM replacement chain and sprocket kit with OE gearing
- Rear Sprocket: Driven C45 steel alloy construction with a black case-hardened finish
- Front Sprocket: Driven C45 steel construction, case hardened and quenched for durability
- Performance: Built for high-mileage service and dependable power transfer
- Brand: RK
- Manufacturer Part Number: 4107-040EX
- Vendor Part Number: 4107-040EX