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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

British Race Tracks –
Rockingham Motor Speedway

Within its relatively short life Rockingham Motor Speedway near Corby in Northamptonshire became one of the most famous and iconic racing venues in the UK. After 10 years’ of planning and 23 months of construction, it was officially opened by the Queen on May 26th 2001 having started operations in the January of that year. […]

Fiennes Performance:
Meet Our Team & Our New Workshop

At the end of February this year, Fiennes Performance, formerly Rob Walker Engineering, moved from its premises at New Yatt Business Park in Witney to join the other Fiennes Group divisions at our Cotswold hub, bringing our family altogether at Broughton Poggs. With Rob Walker Engineering having grown since starting out more than 25 years […]

Fiennes Performance are delighted to be working for
Drag Racing legend Robin Read

It was a pleasant surprise just before Easter to welcome Robin Read with his longstanding toolmaker and engineer Bertie Hopkinson to our Broughton Poggs base. They met with our Lead Engineer Matthew Radburn and have entrusted him to carry out some crankshaft work for them. Matthew was formerly at Rob Walker Engineering, who Robin had […]