Hardcore race engines have won more British championships than any other tuning company, we provide high performance with reliability and a high level of tech support to assist you getting your goals, our modifications to the YZ125 engine are second to none we provide cylinder tune crankcase flow long rod kit (does not increase the engine capacity) carb boring gearbox super finishing I recommend you call us to discuss tailoring you engine to suit your needs
HGS Exhaust Yamaha YZ125
VHM insert. 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.
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