Boyesen PSR-91 Replacement Pro Series Reeds for Rad Valve chemical-filter-cleaner-oil Performance spring rate

Performance spring rate

2003-2004 Honda CRF150F

and will spruce up your engine bay in the process

1997-2000 Polaris Xplorer 300 4x4

2011-2014 Ski-Doo Expedition LE E-TEC 600 HO

Boyesen PSR-91 Replacement Pro Series Reeds for Rad Valve chemical-filter-cleaner-oil Performance spring rateNOTE: When ordering replacement reeds be advised that Rad Valves with part number stamped on side of valve require replacement reeds listed Pro Series and replacement reeds for the Rad Valves without part number stamped on side of valve require replacement reeds listed Unstamped Valves. 3 stage reed design:. Low tension top reeds insure instant throttle response. Intermediate reeds increase mid range responsiveness and pull. High tension base reed