VHM Performance Race Head for KTM 300sx or 300exc 08

VHM produces high-performance 2-piece exchangeable cylinder heads with combustion chamber inserts for two-stroke motocross engines. With the wealth of experience gained from a history of two-stroke tuning in Moto GP racing, VHM has mastered the ability to create cylinder heads that not only cool the engine better but create more horsepower than the stock head alone. The VHM cylinder head is very easy to change, just un-tighten the head bolts, and the head insert can be removed within minutes. This makes it very easy to adjust the combustion ratio by either using the MX (Motocross insert) or the SX (Supercross insert). Most importantly when installing a VHM head it is important to set the correct piston height by using additional OEM base gaskets. All VHM inserts specify the correct piston height on the box they are shipped in. The best way to set the correct piston height is by either having us install the VHM head or using the VHM Piston Height Measuring Tool. Note: VHM heads do not require the use of high-octane race fuels. Also bored-over cylinders or after-market pistons may require different inserts, we only offer a blank insert to be custom cut for these applications