Welcome! to Monkfish Performance, the UK`s leading Indepentant specialist for GM / Vauxhall / HSV / Holden performance V8`s.

Please spend some time exploring the site. On the left hand side of this page there is a menu for the products that we offer for your car, including the full range of Wortec upgrades. Wherever possible prices shown are fully inclusive of fitting and VAT. Can't find what you require? Not sure about a particular product? Feel free to contact us and we will do our best to help.

The product range has been developed and honed as a direct result of real world, UK based testing and development in conjunction with our technical partners. All products are offered only when we are completely satisfied with the end result.

The performance product range is structured in such a manner that there is a logical upgrade path, from a simple Re-map of your cars Engine Control Unit , to a full supercharger installation. Beyond this, for those who want to take their car to the next level, we are able to offer bespoke packages.

Found the product you want - but would really like to try it out first? Many of our products are fitted to our demonstration vehicles which are provided specifically so that you can sample the products before you decide to purchase.

Ready to have the product fitted? Monkfish Performance operate from a modern, fully equipped workshop able to undertake this work for you. We have a customer lounge and can offer free courtesy cars on request.

At Monkfish Performance we pride ourselves on a high level of customer service. This means you can be sure that we will look after you while you and your car are here - and just as important we offer a high standard of after sales service.

Any questions? Please, do not hesitate to ask. Click here. for our contact details.

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