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Motocross Parts /Engine Parts

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We have spare parts for 3 Yamaha models.

Yamaha | WR 400F

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34 results
  • ProX front sprocket shaft repair kit

    From

    £14.99

    RRP: £19.99 (-25%)

    ProX front sprocket shaft repair kit

    (59)
  • ProX Clutch Cover Gasket

    From

    £4.49

    RRP: £4.99 (-10%)

    ProX Clutch Cover Gasket

    (68)
  • ProX main bearings and Seals
    • Super price

    From

    £25.99

    RRP: £29.99 (-13%)

    ProX main bearings and Seals

    (46)
  • ProX Engine gasket kit

    From

    £31.99

    RRP: £39.99 (-20%)

    ProX Engine gasket kit

    (37)
  • ProX Cam chain

    From

    £27.99

    RRP: £49.99 (-44%)

    ProX Cam chain

    (24)
  • ProX Exhaust Valve stem seal

    From

    £2.69

    RRP: £2.99 (-10%)

    ProX Exhaust Valve stem seal

  • ProX Friction Plate Set

    From

    £23.99

    RRP: £27.99 (-14%)

    ProX Friction Plate Set

    (33)
  • ProX Top end gasket kit 4-stroke

    From

    £21.99

    RRP: £26.99 (-19%)

    ProX Top end gasket kit 4-stroke

    (44)
  • ProX Intake Valve stem seal

    From

    £2.69

    RRP: £2.99 (-10%)

    ProX Intake Valve stem seal

    (6)
  • ProX Ignition Cover Gasket

    From

    £2.99

    RRP: £6.99 (-57%)

    ProX Ignition Cover Gasket

    (21)
  • ProX Carburettor Repair Kit

    From

    £21.99

    RRP: £24.99 (-12%)

    ProX Carburettor Repair Kit

  • All Balls Front Sprocket Shaft Repair Kit

    From

    £15.99

    RRP: £16.99 (-6%)

    All Balls Front Sprocket Shaft Repair Kit

    (14)
  • ProX Clutch Basket

    From

    £153.99

    RRP: £259.99 (-41%)

    ProX Clutch Basket

    (10)
  • Clutch spring kit ProX

    From

    £17.99

    RRP: £22.99 (-22%)

    Clutch spring kit ProX

  • ProX Connecting Rod Kit

    From

    £31.99

    RRP: £55.99 (-43%)

    ProX Connecting Rod Kit

  • ProX Piston 4T
    • Super price

    From

    £71.99

    RRP: £192.99 (-63%)

    ProX Piston 4T

    • +3
  • Wiseco Crank Axle Main Bearing Set 2x
    • Super price

    From

    £20.99

    RRP: £24.99 (-16%)

    Wiseco Crank Axle Main Bearing Set 2x

  • Wiseco 9.48mm Valve Shim Set 1.2-3.5mm

    £133.99

    RRP: £149.99 (-11%)

    Wiseco 9.48mm Valve Shim Set 1.2-3.5mm

  • ProX Piston 4T

    From

    £97.99

    RRP: £194.99 (-50%)

    ProX Piston 4T

    • +3
  • ProX Piston 4T

    From

    £89.99

    RRP: £184.99 (-51%)

    ProX Piston 4T

    • +3
  • ProX Steel Exhaust Valve
    • Super price

    From

    £15.99

    RRP: £19.99 (-20%)

    ProX Steel Exhaust Valve

  • Wiseco Clutch Package

    From

    £84.99

    RRP: £99.99 (-15%)

    Wiseco Clutch Package

  • ProX Steel Intake Valve

    From

    £8.49

    RRP: £15.99 (-47%)

    ProX Steel Intake Valve

  • Wiseco Valves Steel

    From

    £7.99

    RRP: £12.99 (-38%)

    Wiseco Valves Steel

  • Twenty Head Gasket Kit
    • Super price

    From

    £7.19

    RRP: £12.99 (-45%)

    Twenty Head Gasket Kit

    (55)
  • Hot Cams Cam Chain

    From

    £35.99

    RRP: £41.99 (-14%)

    Hot Cams Cam Chain

    (7)
  • Wiseco Crank Axle Main Bearing
    • Super price

    From

    £10.99

    RRP: £24.99 (-56%)

    Wiseco Crank Axle Main Bearing

  • ProX Big End Cage Crank Shaft Bearing

    From

    £19.79

    RRP: £24.99 (-21%)

    ProX Big End Cage Crank Shaft Bearing

  • Wiseco Friction Plate Set
    • Super price

    From

    £26.99

    RRP: £59.99 (-55%)

    Wiseco Friction Plate Set

  • All Balls - Front Sprocket Shaft Repair Seal Kit

    From

    £15.99

    RRP: £24.99 (-36%)

    All Balls - Front Sprocket Shaft Repair Seal Kit

  • ProX Crank Pin
    • Super price

    From

    £7.49

    RRP: £16.99 (-56%)

    ProX Crank Pin

  • Wiseco + Loctite Clutch Basket Screw

    From

    £13.49

    RRP: £14.99 (-10%)

    Wiseco + Loctite Clutch Basket Screw

  • ProX Piston Bolt (by dimensions)

    From

    £5.99

    RRP: £9.99 (-40%)

    ProX Piston Bolt (by dimensions)

  • Wiseco Clutch Kit

    From

    £23.99

    RRP: £34.99 (-31%)

    Wiseco Clutch Kit