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Amazed by the quality

I’ve made a few purchases from Extreme Engines. Each time I’m amazed by the quality of the products an the customer service before and after my...
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Great job!

A big thanks to you Karl who made it possible to send us an engine that fast. We’re very happy that there are people out there like you who are...
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Thank you Karl

Thank you Karl for the impeccable service and the highest quality race proven parts and engines. Looking forward to a great 2011.
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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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Another fantastic resul

another fantastic result at prescott, thanks again karl for an awesome engine
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EXT-M4031 CP Piston Kit 81mm M4031

  • Model: EXTCPK4031
  • Shipping Weight: 3.5kgs
  • £750.00

Piston Kit only M4031

08-13 Hayabusa 13.5:1

81mm Bore Standard Bore (1340cc)

7-10 days delivery.

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New Products For June - ALL PRODUCTS

Next Day Delivery available on most parts

All major credit and debit cards accepted through

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