Irrespective of which model you choose the unmistakable howl of a high-revving Radical engine on full throttle will prickle the hairs on the back of your neck. The source of that wonderful noise is our unique range of high-performance engines, assembled and built in-house since 1997.

We have developed our four-cylinder superbike powerplants to give drivers the experience of their lives – all of which give extreme, reliable power. These remarkable lightweight units have to withstand far greater cornering forces than they would on the road, so a dry sump and scavenge system has been developed which enables the motor to endure loadings as high as 3G.

The latest development of the RPV8 series is the most powerful, compact lightweight V8 on the market, and has been extensively developed for maximum reliability in extreme racing conditions. Over 300 RP units have been built to date, all benefiting from an F1 style crankcase design as well as MotoGP cylinder head technology. The engine also features four integral oil scavenge pumps, and it produces unrivalled levels of performance and reliability.

Any car in the range may be specified with the extraordinary PS1 electro-pneumatic paddleshift system, which enables incredible seamless gear shifts up and down the gearbox at the flick of a paddle. The combined autoblipper allows the driver to flat-shift on the way up through the gears, and downshift without using the clutch.

Here at Radical we also tune and optimise the Ford EcoBoost four-cylinder and V6 engines as used in the SR3 SL and RXC, relying on our extensive experience with advanced engine management systems and forced induction. These refinements allow both cars to deliver incredible on-track performance whilst remaining Euro5 emissions compliant for road use.



Without question we produce the ultimate range of lightweight race units and when they are installed in any Radical chassis they create a package that’s literally unbeatable, and such is our confidence in their reliability we offer an extended warranty unmatched by any other manufacturer. Radical engines are also used in other race, rally, autograss, hillclimb and even watersport applications, including as the control engine supplier to the Latin American Super TC2000 touring car championship since 2012.

Approved engine service centres


24 Ivatt Way Business Park
United Kingdom


Spring Mountain Motorsports

Spring Mountain Motorsports Ranch
3601 NV-160
NV 89048




Team Stradale

Team Stradale
Autobahn Country Club
3795 Centerpoint Way
IL 60436


Radical Austrailia Eastern Creek

Eastern Creek International Raceway
Gate 7 - Suite 3
Ferrers Road - Eastern Creek
New South Wales


Radical have the experience to assist and support racing engine programmes in all disciplines across the globe – if you’re looking for a tailored solution then don’t hesitate to get in touch.

Lee Deane
Engine Department Manager
+44 (0)1733 331616 ext.230

Contact Lee Deane