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VHM gulltopp YZ250 99-21


2.995,-

The world famous golden VHM head with exchangeable combustion chamber is specially developed for optimal power output during the whole race and has an improved water duct. It's manufactured from a high quality alloy and O-rings are used for the sealing.

AE32021-B (YZ250): This insert with 20.60cc volume is the VHM standard for Yamaha YZ250 and is developed for the best overall performance. The combustion chamber fits the VHM cylinder head perfectly and is easy to change. The last numbers of the part number are engraved on the insert for indentification.
Use in combination with VHM head AA33080

  • Best overall performance
  • Quick to adjust
  • Good resistance to detonation

AE32021-C (YZ250):This insert has a lower volume / higher compression ratio than our VHM standard insert, meaning more low and middle range torque. This improves acceleration and gives an increased torque feeling when exiting corners. However, keep in mind that this compromises top speed. The combustion chamber fits the VHM cylinder head perfectly and is easy to change. The last numbers of the part number are engraved on the insert for identification.
Use in combination with VHM head AA33080

  • More bottom power reaction
  • Best for deep sand tracks
  • Quick to adjust

AE32021-D (YZ250):This insert has a lower volume / higher compression ratio than our VHM standard insert, meaning more low and middle range torque. This improves acceleration and gives an increased torque feeling when exiting corners. However, keep in mind that this compromises top speed. The combustion chamber fits the VHM cylinder head perfectly and is easy to change. The last numbers of the part number are engraved on the insert for identification.
Use in combination with VHM head AA33080

  • More bottom power reaction
  • Best for deep sand tracks
  • Quick to adjust

AE32021-092 (YZ250x)

  • More engine power
  • Better heat transference
  • More resistance to detonation
  • Exchangeable combustion chambers available

Inserts must be ordered seperately, 

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