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...

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...

Great info and work

Hi Karl, Cheers for all the great info and work, the Busa pulls fantastic ! smooth as silk. Have taken note on all your tips and will keep to them....

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...

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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All Testimonials

Smooth, sharp and quick

Friday 05 April, 2013

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 great job and a very helpful, professional and friendly service
Testimonial By: Tony

Engine is fantastic

Thursday 26 April, 2012


My engine is fantastic after your rebuild – sounds crisp and pulls well. Thanks again.
Cheers, Steve
Testimonial By: Steve

Engine feels fantastic

Tuesday 24 April, 2012

Hi Karl,

Just a quick note to say my engine feels fantastic after your rebuild, great power low down and incredibly drivable! First event at Doune last weekend and set a new PB by over a second!

Looking forward to a great season ahead!

Testimonial By: Finlay

Purchased the car in 2007

Saturday 14 January, 2012

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 date and it has not missed a

Only had to change the oil regularly, and a new set of plugs. 1st & 2nd placings and sprint record holder for the past 5 years.

Great job Karl, maybe a nice new 1400 on the cards
Testimonial By: Mark Stanford

Just wanted to say … Thankyou !!

Monday 17 October, 2011

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 Kit Car. I drove it from the Uk to Alicante, Spain, where we now live.

It is such good weather that I drive it nearly every day throughout the year, and it brings so much fun to me and a lot of other people who see it.

Hope business is still good for you. Keep up the brilliant work.


Vince Coombs
Testimonial By: Vince Coombs

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