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Testimonials

Thanks for re-building

Karl – My 1299cc Hayabusa – thanks for re-building and increasing its capacity to 1397cc – its fantastic and congratulations on your workshops...
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Breath of fresh air

Karl is a breath of fresh air in a market where very few suppliers are willing to listen and help with free, useful, no bullsh*t advice. Karl...
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Engine is fantastic

Karl, My engine is fantastic after your rebuild – sounds crisp and pulls well. Thanks again. Cheers, Steve
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Smooth, sharp and quick

Hi Karl Just a quick note t0 let you know my engine feels very smooth, sharp and quick, looking forward to getting on track, thanks again for a...
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Purchased the car in 2007

Hi Karl I purchased the car in 2007 and was informed the engine was rebuilt in 2006 by yourself, I have used the car in hills & sprints to this...
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EXT-M4039 CP Piston Kit 84mm M4039

  • Model: EXTCPK4039
  • Shipping Weight: 3.5kgs
  • £915.00

Piston Kit only M4039

08-13 Hayabusa 14.0:1 Gas ports

84mm Bore

+3mm oversize (1440cc)

7-10 days delivery.

Add to Cart:
Next Day Delivery available on most parts

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