20-22 Yamaha YZ450F YZ 450F ATHENA Complete Motor Engine Gasket Kit Set Oil Seal Outlander 650 Lightweight dual valve springs compatible

Lightweight dual valve springs compatible with high-lift cams

COMPLETE BUILT BIG BORE MOTOR

Cost-Effective: Superior quality at a better price than OEM replacements

ensuring your engine runs smoothly

Designed for 38-41mm big carb racing setups - works with PWK

20-22 Yamaha YZ450F YZ 450F ATHENA Complete Motor Engine Gasket Kit Set Oil Seal Outlander 650 Lightweight dual valve springs compatibleP400485900213, B2W 11181 00 00, 8080037,822692,8100031,8100039,8110067,816758,816759,817943,823087,CW21014K01, 24461B, 24461, B2W 11311 00 00, B2W 116A0 00 00, B2W 11311 00 00, B2W 116A0 00 00, B2W 11181 00 00, B2W 11351 00 00, B2W 11631 00 00, B2W 11603 00 00, BR9 11633 10 00, BR9 11633 00 00, 93450 19052 00, 51Y 12119 00 00, A YZ450F 2022 97 CG MX1111, 204859111922, 204859111024, C3786, B2W W0001 00 00, P400485600213, 35. 2450, 40255M09700,