BOYESEN PRO-121 BOYESEN REED PSR-121, Boyesen Pro Series Reeds - PRO Specialty 1g/link heavier than RK 428MXZ4

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

The O’NEAL Element line is made with a roomy

Side adjustments via elastic bands and waist band

Kawasaki KLR650 (2002)

Ducati - Monster 821 - 2014

BOYESEN PRO-121 BOYESEN REED PSR-121, Boyesen Pro Series Reeds - PRO Specialty 1g/link heavier than RK 428MXZ4Boyesen 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)