Yamaha YZ400 Parts

Performance parts and accessories that fit your Yamaha YZ400. Shop All Balls Racing, NGK, Wiseco and more. Every part is checked against your vehicle before it ships.

• All Balls RacingAll Balls Racing 75-79 Yamaha DT250 Crank Shaft Seal Only KitMPN abr24-2023$31.62In stock
• All Balls RacingAll Balls Racing 87-04 Kawasaki KFX250 Mojave Chain Roller LowerMPN abr79-5002$21.73In stock
• NGKNGK Iridium Spark Plug Box of 4 (BR8EIX)MPN ngk5044$90.60In stock
• WisecoWiseco 30 x 72 x 19mm Main BearingMPN wisB5003$22.99In stock
• NGKNGK BLYB Spark Plug Box of 6 (BR8ES)MPN ngk1463$53.22In stock
• NGKNGK Nickel Spark Plug Box of 4 (BR8ES)MPN ngk5422$32.76In stock
• Pivot WorksPivot Works 80-85 Yamaha YT1-125 Steering Stem Bearing KitMPN pivPWSSK-Y11-000$82.95In stock
• WisecoWiseco Yamaha YZ 400 77-78/IT 40077-78 3386TD Piston KitMPN wis394M08600$199.99In stock
• Cometic GasketCometic 32X42X6 Oil SealMPN cgsOS284$5.92In stock
• All Balls RacingAll Balls Racing 84-85 Kawasaki KXT250 Tecate Fork Oil Seal Only KitMPN abr55-109$19.12In stock
• WisecoWiseco Main Bearing Kit (2) 30 x 72 x 19mmMPN wisBK5003$46.99In stock
• WisecoWiseco Top End Bearing 18 x 22 x 21.8mm BearingMPN wisB1003$22.99In stock
• All Balls RacingAll Balls Racing 77-79 Yamaha YZ250 Swing Arm Bearing KitMPN abr28-1185$74.10In stock
• All Balls RacingAll Balls Racing Fork and Dust Seal KitMPN abr56-120$40.57In stock
• All Balls RacingAll Balls Racing 1984 Kawasaki KXT250 Tecate Fork Dust Seal Only KitMPN abr57-120$19.87In stock
• All Balls RacingAll Balls Racing 82-83 Honda CR125R Fork Dust Seal Only KitMPN abr57-119$19.50In stock
• Pivot WorksPivot Works 82-83 Yamaha YZ100 Steering Stem Bearing KitMPN pivPWSSK-Y08-000$66.37In stock
• WisecoWiseco Yamaha YZ 400 77-78/IT 40077-78 3425TD Piston KitMPN wis394M08700$209.99In stock
• All Balls RacingAll Balls Racing 77-79 Yamaha YZ125 Cable - ThrottleMPN abr45-1070$22.52In stock
• All Balls RacingAll Balls Racing 82-83 Honda CR125R Fork Oil Seal & Dust Seal KitMPN abr56-124$38.50In stock
• All Balls RacingAll Balls Racing 75-76 Yamaha YZ250 Swing Arm Bearing KitMPN abr28-1176$88.85In stock
• WisecoWiseco Yamaha YZ 400 77-78/IT 40077-78 3366TD Piston KitMPN wis394M08550$199.99In stock
• WisecoWiseco Yamaha YZ 400 77-78/IT 40077-78 3347TD Piston KitMPN wis394M08500$179.99In stock
• BikeMasterBikeMaster Fork Seal - 38 x 50 x 8/9.5MPN bkm429018$11.99In stock