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Motoforce Woodruff Key - Piaggio/ Yamaha Bikes


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We can offer you this woodruff key from Motoforce in OEM quality.
Its function is of course to flywheel onto the crankshaft in the correct position, thus ensuring the right ignition timing

This is one of those small fiddly parts that are easily lost or stuck in the old crankshaft, make sure you have a spare!

Here's a useless fact, the woodruff key was invented in the late 1800's and named after the Woodruff Manufacturing Company!

This is universal and fits virtually all 50cc 2-stroke mopeds except Peugeot.

12x5x3mm (length x depth x width)

Motoforce MF60.16615

  • Aprilia SR Motard 50cc
  • Aprilia SR50R '03 onwards (Piaggio engine)
  • Chinese 50cc 2 stroke (1E40QMB engines)
  • CPI 50cc
  • Derbi GP1 (01-05)
  • Gilera Runner FX 125 2-stroke
  • Gilera Runner 125 4-stroke (all)
  • Malaguti 50cc F10,F12,F15
  • MBK 50 (all)
  • Piaggio/Gilera 50cc 2-stroke scooters (air cooled)
  • Piaggio/Gilera 50cc 2-stroke scooters (liquid cooled)
  • Piaggio Fly 125cc
  • Piaggio Fly 2-stroke
  • Piaggio Fly 50 4-stroke
  • Piaggio Liberty 2-stroke
  • Piaggio Liberty 125cc
  • Piaggio Liberty 50cc 4-stroke
  • Piaggio Typhoon 125cc 4-Stroke
  • Piaggio Zip 100
  • Piaggio Zip 50 4-stroke
  • Vespa 50cc 2-stroke
  • Vespa ET4 125cc
  • Vespa ET4 50cc
  • Vespa GTS 125
  • Vespa LX125
  • Vespa LX50 (2-stroke)
  • Vespa LX50 (4-stroke)
  • Yamaha Aerox 100cc
  • Yamaha Aerox 50
  • Yamaha BWS 50cc
  • Yamaha Jog R/RR
  • Yamaha Neos 50 (2-stroke)
  • Yamaha Slider
  • Yamaha X-Max 125cc
  • Q. do you have to have this on the crankshaft, because i bought a new crankshaft and it has no woodruff key on it
  • A.

    Yes, most definitely ! The woodruff key ensures that the flywheel is in the correct position for the ignition timing, do not try to start an engine without it !