RK / AFAM #428 Steel Split Sprocket - 50mm Racing Kart
Premium #428 steel split sprocket manufactured by RK Japan for demanding racing kart applications. Built for racers who prioritize durability, consistent chain alignment and long service life, these sprockets are an excellent choice for high-load shifter kart and other #428 chain applications.
Precision-machined from high-strength steel, the split design allows the sprocket to be installed or changed without removing the rear axle. A standard 2mm center gap provides proper clamping and secure mounting to compatible 50mm sprocket carriers.
Depending on current production and availability, sprockets may be branded RK, XAM, AFAM or NKP. These are manufactured by RK Japan to the same high-quality standards.
Features
- Chain Size: #428
- Material: High-strength steel
- Design: Split sprocket for quick installation and gear changes
- Center Gap: 2mm
- Application: 50mm racing kart sprocket carriers
- Precision-machined for accurate chain alignment
- Excellent durability and wear resistance
- Designed for demanding racing conditions
- Ideal for high-load shifter kart applications
- Manufactured by RK Japan
- May be branded RK, XAM, AFAM or NKP depending on availability
Important 18-Tooth Fitment Note
18T ONLY: The machined chain groove on the RK 18-tooth sprocket is too narrow for DID and Regina #428 chains. For proper fitment with the 18T sprocket, use the Panther #428 Chain.
This chain restriction applies specifically to the 18T sprocket. Verify chain compatibility before ordering the 18-tooth size.
