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x2 O-rings
Domes are sold singular
Pro Circuit Muffler
Head Shell
Yamaha 90 replacement O-Ring Kit
Boyesen Power Reeds 333R Yamaha x2 O-ringsDual stage reeds work in unison to perform efficiently throughout the entire powerband. The difference in stiffness between the top reed and the bottom reed allow the reeds to respond quickly and accurately to changes in engine pressure. This translates into quicker acceleration, crisper throttle response and increased horsepower throughout the powerband. Important Note: Complete Set 3 Cylinder Engine. Racing reeds for engines running over 7,000 7,500
