Upgrade your motorcycle’s intake performance with Boyesen 620 Dual-Stage Motorcycle Reeds. Designed to improve throttle response, airflow, and overall engine efficiency, these replacement reeds provide a practical performance improvement for compatible Kawasaki and Yamaha two-stroke motorcycles. The Boyesen brand is recognized for precision-engineered reed technology, and Part Number 620 is designed as a direct-fit performance replacement for select applications.
The dual-stage reed design allows faster opening and closing to improve low-pressure, low-throttle response while increasing air velocity and usable flow area. This can help deliver more responsive acceleration and improved performance throughout the operating range. The design also supports longer overall service life and is engineered so that the engine is protected from damage if a reed breaks.
These Boyesen 620 reeds fit the 1982 Kawasaki AR 50 and 1982 Kawasaki AR 80. Compatible Yamaha applications include the 1983 DT100, 1980-1982 MX80, 1980 Yamaha YZ50, and 1988-1990 DT50. Confirm the motorcycle model and year before installation to ensure proper fitment. Manufacturer Part Number: 620. Vendor Part Number: 620.
Features:
- Dual-stage reed design improves intake control and engine response
- Faster opening and closing supports quicker throttle response
- Improves low-pressure, low-throttle performance
- Increases air velocity and available flow area
- Designed for longer overall service life
- Engine-protective design helps prevent damage if a reed breaks
- Fits select Kawasaki AR 50 and AR 80 motorcycles
- Fits select Yamaha DT100, MX80, YZ50, and DT50 motorcycles
Fitment:
1974 Yamaha Dt125
1980 Yamaha Mx80
1980 Yamaha YZ50
1981 Yamaha Mx80
1982 Kawasaki AR 50
1982 Kawasaki AR 80
1982 Yamaha Mx80
1983 Yamaha Dt100
1988 Yamaha Dt50
1989 Yamaha Dt50
1990 Yamaha Dt50