BOYESEN PRO-121 BOYESEN REED PSR-121, Boyesen Pro Series Reeds - PRO Specialty Side adjustments via elastic bands

Side adjustments via elastic bands and waist band

YFZ 450 LES Limited Edition (2004)

OEM 7943-890-4044

1g/link heavier than RK 428MXZ4 non sealed chainThe MXU chain series is the next generation of enduro/motocross racing chains featuring the RK patented technology of Ultra Thin UW-Rings

Some fuel tank pictures showed are for illustration purposes only

BOYESEN PRO-121 BOYESEN REED PSR-121, Boyesen Pro Series Reeds - PRO Specialty Side adjustments via elastic bandsBoyesen Pro Series Reeds for RL Rad Valve PSR 121 Direct replacement reed for Rad Valve To determine if you have an RL or RR Rad Valve, look for an RL stamp in the casting; the RR Rad Valve does not have a stamp Honda 2000 Honda CR125R 1999 Honda CR125R Part No. 05 P121 (oro2u. com)