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these valves are direct OEM-size replacements and are compatible with both stock and upgraded springs
WORKS ON ALL '03-13 YAMAHA YZ450F MODELS
while eliminating possible hot spots that promote detonation
Take your Yamaha YZ125 to the next level with the legendary Athena 58mm 144cc Big Bore Top End Kit
99+ Yamaha YZ250 YZ 250 Stock Bore 66.40mm Replacement Cylinder Head Ti Stud Kit Maverick X3 Turbo these valves are direct OEM-size5MW 11111 02 00, 5MW 11111 00 00, 5UP 11111 00 00, 90116 08027 00, 90176 08005 00,90201 080L8 00,93211 02703 00, C7855, C3592, 93210 74316 00,810670,P400485160183,CH2001 K01, CH2001 K02 BPRATV YZ250 Stock Bore Cylinder Head with Titanium Stud Kit, Acorn Cap Nuts, Copper Sealing Washers, & Head O Ring Kit! The Best & Most Affordable New YZ250 Cylinder Head Replacement Kit & Install Kit at THE BEST PRICE! Everything you need for a quick and easy