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Motocross Parts /Engine Parts

Vehicle Parts Guaranteed To Fit

We have spare parts for 35 KTM models.

KTM | 125 SX

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100 results
  • Proworks Radiators

    From

    £49.99

    RRP: £65.99 (-24%)

    Proworks Radiators

    (17)
  • ProX Clutch Cover Gasket

    From

    £3.99

    RRP: £5.99 (-33%)

    ProX Clutch Cover Gasket

    (70)
  • ProX Complete Clutch Kit
    • Super price

    From

    £50.99

    RRP: £86.99 (-41%)

    ProX Complete Clutch Kit

    (90)
  • ProX front sprocket shaft repair kit

    From

    £13.99

    RRP: £19.99 (-30%)

    ProX front sprocket shaft repair kit

    (60)
  • SCAR Oil Cap
    • Super price

    From

    £11.99

    RRP: £15.99 (-25%)

    SCAR Oil Cap

    (9)
  • ProX Small End Piston Bearing

    From

    £6.99

    RRP: £7.99 (-13%)

    ProX Small End Piston Bearing

    (76)
  • Crankshaft oil seals ProX
    • Super price

    From

    £3.49

    RRP: £5.99 (-42%)

    Crankshaft oil seals ProX

    (12)
  • ProX Complete Clutch Kit

    From

    £65.99

    RRP: £111.99 (-41%)

    ProX Complete Clutch Kit

  • Twin Air Radiator sleeve
    • Super price

    From

    £10.99

    RRP: £12.99 (-15%)

    Twin Air Radiator sleeve

    (20)
  • ProX Top end gasket kit 2-stroke

    From

    £9.99

    RRP: £15.99 (-38%)

    ProX Top end gasket kit 2-stroke

  • V-Force 3 Reed Valve Membrane

    From

    £102.99

    RRP: £159.99 (-36%)

    V-Force 3 Reed Valve Membrane

    (41)
  • ProX Piston 2T

    From

    £31.99

    RRP: £49.99 (-36%)

    ProX Piston 2T

    • +2
  • Hinson Billetproof® Clutch Cover

    From

    £159.99

    RRP: £199.99 (-20%)

    Hinson Billetproof® Clutch Cover

  • ProX Engine gasket kit

    From

    £30.99

    RRP: £39.99 (-23%)

    ProX Engine gasket kit

    (38)
  • ProX Gasket Kit Cylinder 2-stroke

    From

    £8.99

    RRP: £12.99 (-31%)

    ProX Gasket Kit Cylinder 2-stroke

    (32)
  • ProX main bearings and Seals

    From

    £20.99

    RRP: £29.99 (-30%)

    ProX main bearings and Seals

    (47)
  • ProX Carburettor Repair Kit

    From

    £17.99

    RRP: £24.99 (-28%)

    ProX Carburettor Repair Kit

  • ProX Inner Clutch Hub

    From

    £28.99

    RRP: £41.99 (-31%)

    ProX Inner Clutch Hub

    (16)
  • Boyesen Power Reed Valve Membrane

    From

    £155.99

    RRP: £199.99 (-22%)

    Boyesen Power Reed Valve Membrane

    (22)
  • ProX Clutch Cylinder Repair Kit

    From

    £18.99

    RRP: £29.99 (-37%)

    ProX Clutch Cylinder Repair Kit

    (7)
  • ProX Clutch Basket

    From

    £143.99

    RRP: £279.99 (-49%)

    ProX Clutch Basket

    (11)
  • ProX Water Pump Repair Kit

    From

    £16.99

    RRP: £25.99 (-35%)

    ProX Water Pump Repair Kit

    (46)
  • ProX Ignition Cover Gasket

    From

    £2.99

    RRP: £4.99 (-40%)

    ProX Ignition Cover Gasket

    (21)
  • ProX Clutch Pressure Plate
    • Super price

    From

    £15.99

    RRP: £24.99 (-36%)

    ProX Clutch Pressure Plate

  • ProX Connecting Rod Kit

    From

    £36.99

    RRP: £55.99 (-34%)

    ProX Connecting Rod Kit

    (6)
  • ProX Rubber Clutch Basket Damper
    • Super price

    From

    £4.99

    RRP: £9.99 (-50%)

    ProX Rubber Clutch Basket Damper

    (8)
  • Clutch spring kit ProX

    From

    £14.99

    RRP: £22.99 (-35%)

    Clutch spring kit ProX

    (14)
  • ProX Piston 2T
    • Super price

    From

    £31.99

    RRP: £49.99 (-36%)

    ProX Piston 2T

    • +2
  • V-Force Reed Kit

    From

    £43.99

    RRP: £75.99 (-42%)

    V-Force Reed Kit

    (10)
  • V-Force Gasket
    • Super price

    From

    £3.99

    RRP: £5.99 (-33%)

    V-Force Gasket

  • Boyesen Clutch Cover Black

    From

    £87.99

    RRP: £109.99 (-20%)

    Boyesen Clutch Cover Black

    (26)
  • Proworks Kickstarter Silver
    • Super price

    From

    £37.99

    RRP: £66.99 (-43%)

    Proworks Kickstarter Silver

    (8)
  • Boyesen Power Reeds

    From

    £23.99

    RRP: £42.99 (-44%)

    Boyesen Power Reeds

    (26)
  • Polisport Radiator Net

    From

    £9.49

    RRP: £14.99 (-37%)

    Polisport Radiator Net

  • Wiseco Piston 2T

    From

    £79.99

    RRP: £99.99 (-20%)

    Wiseco Piston 2T

    • +8
  • All Balls Front Sprocket Shaft Repair Kit

    From

    £15.99

    RRP: £19.99 (-20%)

    All Balls Front Sprocket Shaft Repair Kit

    (14)
  • V-Force 4 Reed Valve Membrane

    From

    £119.99

    RRP: £159.99 (-25%)

    V-Force 4 Reed Valve Membrane

    (25)
  • SAMCO Radiator Hoses

    From

    £44.99

    SAMCO Radiator Hoses

    • +3
  • Rekluse Slave Cylinder Rebuild Kit

    From

    £39.99

    RRP: £49.99 (-20%)

    Rekluse Slave Cylinder Rebuild Kit

  • Boyesen Ignition Cover Black

    From

    £69.99

    RRP: £99.99 (-30%)

    Boyesen Ignition Cover Black

    (26)