In the competitive world of motorsport, both performance and reliability are paramount. With over thirty years’ experience in engine tuning, Radical Performance Engines has established an enviable reputation in the design and production of an increasing range of four and eight-cylinder, Suzuki-based race engines, all of which are built and developed in-house.

RPE engines are used in race, rally, autograss, hillclimb and even watersport applications.

Testament to this is RPE’s proud association with Radical Sportscars, to whom Radical Performance Engines has supplied engines since 1997.

Radical Performance Engines employs eight skilled engine builders, with a sole technician building each engine from start to finish. Each technician is supported by a highly skilled team of designers, development engineers and procurement staff, on-hand to ensure the process, from ordering to receiving your racewinning engine, is handled as smoothly as possible.

Such is RPE’s confidence in the reliability of the engine work it carries out, much is covered by a warranty for 30 racing hours; no other manufacturer at this level of motorsport offers such cover.

Radical Performance Engines is proud to be a technical partner with:


Radical Performance Engines is the only company approved by Suzuki to supply a range of new race engines for race car applications, utilising engines sourced direct from the Japanese production line, supplied exclusively to Radical Performance Engines. To date, over 1,000 engines have been hand-crafted by RPE’s technicians to meet the exacting standards expected from our business partners.


Cosworth have incorporated five decades of motorsport knowledge from F1, MotoGP and World Superbike technology, to produce a unique range of power-enhancing, stronger, lighter, state-of-the-art pistons exclusively for Radical Performance Engines. Available in kit form or fitted in RPE engines, these performance pistons set Radical Performance Engines race engines apart from the rest.


Based on experience at the highest levels of motorsport, Arrow Precision have developed and manufacture a range of lightened, high-strength forged steel conrods and billet crankshafts uniquely for Radical Performance Engines. The complete range of four and eight-cylinder Radical Performance Engines race engines utilise these components, and they contribute significantly to the reliability and durability of our products.


Radical Performance Engines are a technical partner with RT Quaife Engineering, a world leader in the design and manufacture of driveline components. Our design team have worked closely with Quaife to produce the most reliable drivetrain solutions for motorcycle-engined cars. From six-speed sequential transaxles, to chain-driven, limited-slip differentials we have an exclusive product that meets the requirements and budget of every customer.