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When performance

counts, count on us.

It's what we do

Engine machining and PERFORMANCE UPGRADES

With a full range of engineering services geared to performance, fast road, and classic cars such as Mini, and both air- and water-cooled Porsches, our specialists are ready to optimise any engine’s capability to give you the edge. With services spanning everything from gearbox builds to head reconditioning, we have the skills and expertise you need even if that means a custom build for a performance motorbike.


Experts in Machining Performance upgrades all engine types meeting your needs

Performance – it’s not necessarily just about going fast, beating your opponent, or indeed, yourself. It’s also about longevity, durability and predictable performance on the road or track. For us, performance stems from specialist engineering. At Fiennes Performance we have honed our skills for over two decades to cover everything from complete engine machining to flywheel balancing to create the optimum performance improvements.

A focus on optimising engine capability

Specialised engineering knowledge

Performance isn't always about a chequered flag


Making the most of your engine

A good engineer has keen powers of observation, an analytical mind and a capacity for perseverance. Yet, at Fiennes Performance there’s one more vital ingredient – deep knowledge. With specialist expertise across Mini, Porsche, Mitsubishi, Subaru, motorbike and indeed any other engine, the dedication to quality and attention to detail is absolute. So whether you need a precisely honed cylinder block, or the delicate modification of a Porsche crank case with an oil bypass, Fiennes can deliver.

Performance Mini
Classic Mini engine upgrades

Latest news

Fiennes Performance:
A Little More About Who We Are…

Power is nothing without precision engineering to back it up, and performance is as much about longevity, durability and predictable performance as it is about speed. At Fiennes Performance our specialist precision engineering skills have been honed over two decades. The range of services we can offer is truly world-leading, and includes everything from complete engine […]

British Race Tracks – Silverstone

Say the name Silverstone and immediately most people think of the British Grand Prix. But there is a wealth of history of this famous circuit, and its offerings today are far more varied than just that one event. The Silverstone Classic is an important annual fixture in our calendar here at Fiennes Classics, Fiennes Performance […]

British Race Tracks – Thruxton Circuit

Thruxton Circuit, near Andover, Hampshire, is a 2.3 mile circuit that plays host to British Touring Car and Formula 3 racing events. Its particular distinction is that it is known as the ‘Fastest Circuit in the UK’, a boast that was proved largely accurate in 1993 when Damon Hill averaged 147 mph around it in […]