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All YAMAHA parts

YAMAHA YZ 400

Yamaha's early big-bore two-stroke. Air-cooled, raw, and now well into restoration territory. Get the fitment right on engine internals and chassis bearings or you'll waste money and weekends. Check the fins for cracks. Check the frame mounts for fatigue. Decades of vibration leave their mark, so inspect before you order parts.

43 parts fit this bike

// Parts

All 43 parts

WISECO CIRCLIP 18MM

WISECO

CW18 CIRCLIP 18MM

£2.12 £2.65
WOSSNER PISTON CIRCLIPS / 18 MM

WOSSNER

09130250 PISTON CIRCLIPS / 18 MM

£2.34 £3.00
ATHENA FORK OIL SEAL KIT MGR-RSD2 38x50x8/9,5

ATHENA

04070217 FORK OIL SEAL KIT MGR-RSD2 38x50x8/9,5

£6.33 £7.63
BARNETT CLUTCH STEEL DRIVE PLATE EACH

BARNETT

2012240 CLUTCH STEEL DRIVE PLATE EACH

£6.76 £8.05
EMGO KILL SWITCH FOR YAMAHA

EMGO

06160010 KILL SWITCH FOR YAMAHA

£8.10 £10.13
MOOSE OFFROAD HARD-PARTS WHEEL BEARING AND SEAL KIT

MOOSE OFFROAD HARD-PARTS

A251143 WHEEL BEARING AND SEAL KIT

£8.23 £10.55
WOSSNER REPLACEMENT NEEDLE BEARING

WOSSNER

09240458 REPLACEMENT NEEDLE BEARING

£8.29 £10.63
MOOSE OFFROAD HARD-PARTS FRONT SPROCKET - KAW/SUZ/YAM - 14 T

MOOSE OFFROAD HARD-PARTS

12122180 FRONT SPROCKET - KAW/SUZ/YAM - 14 T

£9.93 £12.73
MOOSE OFFROAD HARD-PARTS FRONT SPROCKET - KAW/YAM - 12 T

MOOSE OFFROAD HARD-PARTS

12122178 FRONT SPROCKET - KAW/YAM - 12 T

£9.93 £12.73
MOOSE OFFROAD HARD-PARTS FRONT SPROCKET - KAW/YAM - 13 T

MOOSE OFFROAD HARD-PARTS

12122123 FRONT SPROCKET - KAW/YAM - 13 T

£9.93 £12.73
MOOSE OFFROAD HARD-PARTS FRONT SPROCKET - KAW/YAM - 13 T

MOOSE OFFROAD HARD-PARTS

12122179 FRONT SPROCKET - KAW/YAM - 13 T

£9.93 £12.73
MOOSE OFFROAD HARD-PARTS FRONT SPROCKET - KAW/YAM - 14 T

MOOSE OFFROAD HARD-PARTS

12122124 FRONT SPROCKET - KAW/YAM - 14 T

£9.93 £12.73
MOOSE OFFROAD HARD-PARTS FRONT SPROCKET - YAMAHA - 12 T

MOOSE OFFROAD HARD-PARTS

12122122 FRONT SPROCKET - YAMAHA - 12 T

£9.93 £12.73
MOOSE OFFROAD HARD-PARTS WHEEL BEARING AND SEAL KIT

MOOSE OFFROAD HARD-PARTS

A251038 WHEEL BEARING AND SEAL KIT

£10.78 £13.82
MOTION PRO LEVER OE-STYLE CLUTCH YAM

MOTION PRO

06141701 LEVER OE-STYLE CLUTCH YAM

£12.34 £15.43
EBC CLUTCH SPRING CSK SERIES COIL SPRING STEEL

EBC

CSK2 CLUTCH SPRING CSK SERIES COIL SPRING STEEL

£12.68 £16.26
MOTION PRO LEVER OE-STYLE CLUTCH YAM

MOTION PRO

06141703 LEVER OE-STYLE CLUTCH YAM

£13.64 £17.05
PARTS UNLIMITED BRAKE LEVER ASSEMBLY SHORTY SILVER

PARTS UNLIMITED

434102R BRAKE LEVER ASSEMBLY SHORTY SILVER

£14.70 £18.38
PARTS UNLIMITED SHORTY STYLE CLUTCH LEVER ASSEMBLY BLACK

PARTS UNLIMITED

434104L SHORTY STYLE CLUTCH LEVER ASSEMBLY BLACK

£14.98 £18.72
EMGO GR SHFTR YZ250, IT175/250

EMGO

16021323 GR SHFTR YZ250, IT175/250

£15.21 £19.01
MOOSE OFFROAD HARD-PARTS THROTTLE CABLES

MOOSE OFFROAD HARD-PARTS

06501234 THROTTLE CABLES

£16.56 £21.23
WISECO TOP END BEARING KIT 18 X 22 X 22MM

WISECO

B1003 TOP END BEARING KIT 18 X 22 X 22MM

£17.05 £21.31
MOOSE OFFROAD HARD-PARTS MAGNETIC DRAIN PLUG HONDA/YAMAHA

MOOSE OFFROAD HARD-PARTS

M0103 MAGNETIC DRAIN PLUG HONDA/YAMAHA

£18.97 £24.32
EBC BRAKE SHOE WATER GROOVED SERIES ORGANIC

EBC

EBC507G BRAKE SHOE WATER GROOVED SERIES ORGANIC

£21.08 £27.02
BARNETT CLUTCH SPING KIT SET OF 6

BARNETT

2012355 CLUTCH SPING KIT SET OF 6

£24.51 £29.18
MOTION PRO LEVER CLUTCH FORGED-T6

MOTION PRO

06130525 LEVER CLUTCH FORGED-T6

£23.46 £29.33
MOOSE OFFROAD HARD-PARTS REAR SPROCKET 49 TEETH ALUMINIUM SILVER

MOOSE OFFROAD HARD-PARTS

12111598 REAR SPROCKET 49 TEETH ALUMINIUM SILVER

£25.77 £33.04
MOOSE OFFROAD HARD-PARTS FORK AND DUST SEAL KIT 38MM

MOOSE OFFROAD HARD-PARTS

04070135 FORK AND DUST SEAL KIT 38MM

£26.41 £33.86
MOOSE OFFROAD HARD-PARTS FORK AND DUST SEAL KIT 46MM

MOOSE OFFROAD HARD-PARTS

04070098 FORK AND DUST SEAL KIT 46MM

£27.37 £35.09
MOOSE OFFROAD HARD-PARTS REAR SPROCKET 50 TEETH ALUMINIUM SILVER

MOOSE OFFROAD HARD-PARTS

12111599 REAR SPROCKET 50 TEETH ALUMINIUM SILVER

£28.92 £37.08
MOOSE OFFROAD HARD-PARTS REAR SPROCKET 49 TEETH ALUMINIUM BLUE

MOOSE OFFROAD HARD-PARTS

12111627 REAR SPROCKET 49 TEETH ALUMINIUM BLUE

£29.10 £37.31
MOOSE OFFROAD HARD-PARTS CLUTCH PERCH ALUMINUM CHROME

MOOSE OFFROAD HARD-PARTS

06150002 CLUTCH PERCH ALUMINUM CHROME

£29.94 £38.39
MOOSE OFFROAD HARD-PARTS STEERING STEM BEARING KIT

MOOSE OFFROAD HARD-PARTS

04100022 STEERING STEM BEARING KIT

£32.84 £42.10
EBC BRAKE SHOE PLAIN SERIES ORGANIC

EBC

EBC528 BRAKE SHOE PLAIN SERIES ORGANIC

£32.96 £42.25
EBC BRAKE SHOE WATER GROOVED SERIES ORGANIC

EBC

EBC528G BRAKE SHOE WATER GROOVED SERIES ORGANIC

£34.40 £44.10
BOYESEN REED PETAL FIBERGLASS

BOYESEN

606 REED PETAL FIBERGLASS

£36.89 £44.45
BOYESEN REED PETAL FIBERGLASS

BOYESEN

640R REED PETAL FIBERGLASS

£37.01 £44.59
EBC CLUTCH TOOL BASKET/HUB REMOVAL

EBC

38030041 CLUTCH TOOL BASKET/HUB REMOVAL

£36.79 £47.17
MOOSE OFFROAD HARD-PARTS STEERING STEM BEARING KIT

MOOSE OFFROAD HARD-PARTS

04100024 STEERING STEM BEARING KIT

£40.76 £52.26
EBC CLUTCH KIT FRICTION PLATE CK SERIES CORK

EBC

CK2279 CLUTCH KIT FRICTION PLATE CK SERIES CORK

£53.34 £68.39
MOOSE OFFROAD HARD-PARTS FORK GUARD BLACK

MOOSE OFFROAD HARD-PARTS

04120163 FORK GUARD BLACK

£66.09 £84.73
MAIER REAR FNDR YZ250 77-85 WHT

MAIER

M18560W REAR FNDR YZ250 77-85 WHT

£78.82 £93.83
MAIER Front Fender for YZ125 77-89

MAIER

M18350 Front Fender for YZ125 77-89

£97.71 £116.32

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Free UK shipping over £100 ✦ 14-day no-quibble returns ✦ OEM-grade parts only ✦ UK support · Tue–Fri 9–5, Sat 9–4 ✦ Race-shop prices, paddock service ✦ Click & collect from Leeds ✦
Free UK shipping over £100 ✦ 14-day no-quibble returns ✦ OEM-grade parts only ✦ UK support · Tue–Fri 9–5, Sat 9–4 ✦ Race-shop prices, paddock service ✦ Click & collect from Leeds ✦