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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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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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Just wanted to say … Thankyou !!

Hi Carl Just wanted to say … Thankyou !! You striped and rebuilt my Hayabusa back in 2009 and it is still running like a dream in my Dax Rush...
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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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Engine is fantastic

Karl, My engine is fantastic after your rebuild – sounds crisp and pulls well. Thanks again. Cheers, Steve
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EXT-10020 Heavy Duty Gear Change Spring

  • Model: EXT10020
  • Shipping Weight: 0.1kgs
  • £12.95

This H/Duty Gear Change Spring is 10% stronger than the origional Hayabuse spring, designed to give a more positive gear selection.

It is aimed more at the car application than the bikes, simply because most car applications have a greater leverage so therefore need a stronger spring.

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