The Boyesen RBK-4 Motorcycle Rad Valve Boot is designed to provide a dependable connection between the intake system and reed valve assembly on select 125cc two-stroke motorcycles. Manufactured by Boyesen, this replacement boot helps support proper intake sealing and reliable airflow for applications requiring a compatible Rad Valve boot.
Built for a precise fit, the Boyesen RBK-4 is suitable for the 2001 Honda CR125R, 2001 Kawasaki KX125, 1989 through 1993 Suzuki RM125, and 1994 through 1996 Yamaha YZ125. Confirm the motorcycle model and year before installation to ensure compatibility. The boot is intended as a direct replacement for the specified application and can help restore the proper connection when the original intake boot is cracked, hardened, worn, or damaged.
This motorcycle Rad Valve boot is manufactured for performance-oriented two-stroke applications and is identified by Boyesen manufacturer part number RBK-4. It is also listed under vendor part number RBK-4, making it easy to match with service records and replacement requirements. Installation should follow the motorcycle manufacturer’s service procedures, including inspection of mating surfaces, clamps, and related intake components.
Features:
- Brand: Boyesen
- Manufacturer Part Number: RBK-4
- Vendor Part Number: RBK-4
- Product Type: Motorcycle Rad Valve boot
- Fitment: 2001 Honda CR125R
- Fitment: 2001 Kawasaki KX125
- Fitment: 1989-1993 Suzuki RM125
- Fitment: 1994-1996 Yamaha YZ125
- Application: Select 125cc two-stroke motorcycle intake systems
- Replacement Use: Helps restore a secure intake and reed valve connection
Fitment:
1989 Suzuki RM125
1990 Suzuki RM125
1991 Suzuki RM125
1992 Suzuki RM125
1993 Suzuki RM125
1994 Yamaha YZ125
1995 Yamaha YZ125
1996 Yamaha YZ125
1997 Yamaha YZ125
1998 Yamaha YZ125
2001 Honda CR125R
2001 Kawasaki KX125