VHM Cylinder Head Set (2) Yamaha TZ250 1995-2002

VHM produces exchangeable cylinder heads for two-stroke engines in road race With the help of experience gained in two-stroke tuning, VHM develops products of high quality.

There are many head inserts for this application so we have list 3 option for you to choose but if you wish a design of combustion chamber which is different please call on 0044-(0)1487 813755 and we will supply albeit flat or dome pistons.



Volume of head includes spark plug hole and total volume of head with piston at TDC

Standard setting unleaded
Piston height 0.00mm to the top of the cylinder (flat pistons)
Volume 12.00 cc
Squish clearance 00.75mm

Full GP setting
Piston height 00.20mm to the top of the cylinder ( flat pistons )
Volume 11.80cc
Squish clearance 00.70mm

Leaded fuel option
Piston height 00.00mm to the top of the cylinder (flat pistons)
Volume 10.60cc
Squish clearance 00.65mm

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