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CYLINDER HEAD SPECIALISTS

RACE-PROVEN MOTORCYCLE CYLINDER HEADS

Trusted by teams competing in MXGP, British Superbikes, British Motocross and championships across Europe. All precision engineering, welding and machining is carried out entirely in-house.
We have a full machine shop allowing us to undertake all aspects of cylinder head work

SPECIALIST CYLINDER HEAD SERVICES​

  • Motocross Cylinder Head Repairs

  • Road Racing Cylinder Head Repairs

  • Full Race Heads

  • Porting/Tuning

  • Aluminium Welding​

  • Combustion Chamber Repairs

  • ​Valve Seat Replacement

  • Valve Guide Replacement

  • Valve Guide Diamond Honing

  • Oversize Valve Bucket Housings

  • Cam Journal Repairs

  • Head Skimming & Machining

  • Thread Repairs

  • Trojan/Copper Valve Seats​​​​​​

Cutting our copper valve seats on a 2026 kxf250 cylinder head for a team in British Motocross

YAMAHA R6 COMBUSTION CHAMBER REPAIR

  • Damaged combustion chambers can often be fully repaired following valve or engine failure.

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  • The video to the right shows a Yamaha R6 BN6 cylinder head before and after we have completed a repair requiring 2 new intake valve guides, 2 new valve seats, extensive welding and reshaping of the combustion chamber.

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  • The repaired chamber was accurately finished and volume matched to the remaining three combustion chambers, ensuring consistent compression across all four cylinders.

4 STROKE CYLINDER HEAD PORTING

  • With over 15 years of experience, we specialise in precision cylinder head porting for motocross and road racing motorcycles​

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  • Every cylinder head is developed in-house using proven techniques that maximise airflow, increase performance, and deliver reliable power where it counts. Our work has helped power multiple race-winning engines at every level of the sport.

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  • Whether you're looking for stronger mid-range, more top-end power, or a complete race-spec cylinder head, we've got the experience to deliver results.

CAM JOURNAL REPAIRS

  • Worn, scored or seized camshaft journals can often be repaired, saving the need for an expensive replacement cylinder head.

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  • We precision machine the damaged journal and install a phosphor bronze bearing insert, before machining to restore the correct camshaft clearance and alignment.

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  • Ideal for damage caused by oil starvation, camshaft seizure or excessive journal wear.

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  • All machining and repairs carried out in-house.

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