The worlds best-selling race car

02m 02s
Silverstone laptime
Silverstone GP
02m 02s
Toby Sowery
Donington GP
01m 30s
Haydn Chance
Philip Island
01m 32s
Jordan Oon
Yas Marina
01m 59s
George King
Silverstone GP
02m 02s
Toby Sowery
Donington GP
01m 30s
Haydn Chance
Philip Island
01m 32s
Jordan Oon
Yas Marina
01m 59s
George King

It’s the balance of the car that lives on in the mind, the confidence it inspires and the ease with which it can be corrected, even at ludicrous speeds. I love road cars and spend most of my life in them. But they can’t do that.

Andrew Frankel, Autocar Writers' Car of the Year

Having spent the day in the XXR and owning an XX, I can confidently say that the new XXR is a much-welcomed evolution of the already brilliant XX.

Toby Sowery, Radical owner and IndyCar pro-driver

SR3 XXR Standard Equipment


  • Lightweight spaceframe chassis with FIA-specification safety cell and crash structure
  • LMP-inspired, high-downforce composite bodywork
  • XXR-generation LED race lighting including FIA high-intensity central rain light
  • Bi-plane high-downforce track day rear wing and diffuser
  • XXR-generation Le Mans pre-preg carbon composite mirrors
  • XXR-generation rear wing endplates


  • Gen 5 RPE liquid cooled 4-cylinder, 16 Valve, 1340cc or 1500cc
  • Gen 5 RPE dry sump and cooling system
  • Gen 5 RPE coil-on-plug ignition system
  • Electronic Drive-By-Wire with optimized carbon airbox with OHFI (Over-Head-Fuel-Injection)
  • Life Racing ECU with detailed interrogation function for maintenance and analysis
  • Hi-flow racing exhaust system
  • Biofuel ready


  • Two-seater chassis with twin or single-seat options, optimised for use with a moulded race seat insert
  • XXR-generation Formula Wheel with integral LCD display, lightweight shift paddles and on-wheel switching.
  • XX-generation dashboard with waterproof, backlit momentary touchpad
  • Dash-mounted brake bias adjuster
  • Wind deflector


  • Radical four-pot calipers front & rear on 280mm x 25mm fully-floating 48-vane disc brakes
  • XX-generation solid-state Power Distribution Module (PDM) with Controller Area Network (CAN) linked wiring and telemetry
  • XX-generation data integration and logging allowing additional data logging (see options)
  • Full electronic fire extinguisher system

Power train

  • Six-speed, integral sequential gearbox
  • Radical developed paddle-activated gearshift system with auto-blipper
  • Quaife gear final drive and limited-slip differential, reversing gear system
  • Mid-engined, rear-wheel-drive


  • Fully adjustable Nik-link suspension system, front and rear unequal length wishbones, adjustable pushrods
  • Lightweight uprights providing an improvement in durability
  • Interchangeable roll bars
  • Choice of bespoke Intrax fully adjustable damper with Anti-Roll Control (ARC) technology

Wheels and Tyres

  • Radical XXR design centre lock, cast aluminium wheels with red accent
  • 8" × 15" diameter front and 10.5" × 16" rears
  • Slick & wet tyre options, Radical recommends Hankook


  • Length: 4077mm
  • Width: 1799mm
  • Height: 1093mm
  • Weight: 620kg
View all equipment

SR3 XXR Options

  • Convenience Pack (Additional silencer, radiator fan and engine oil pre-heater)
  • AP Racing brakes upgrade
  • Pre-preg carbon-fibre double front dive planes
  • Carbon-fibre splitter and rear diffuser
  • LED race lights
  • Triple-adjustable racing suspension
  • Air jack system
  • Enhanced Data Pack (SmartyCam video system with GPS and steering logging sensors)
  • Pre-preg carbon-fibre dashboard
  • Advanced dynamic laser ride height (front and rear) logging
  • Tyre pressure and temperature monitoring system
  • Suspension logging sensors
  • Electrically-activated fire extinguisher system
  • FiA certified 76-litre fuel cell
  • Fuel sampling/drain kit
  • Dry-break refuelling system
  • Nik-Link rollbar set
  • Trickle charge and jump starter pack
  • Forward-facing stay head protectors
  • Composite halo head restraint
  • Driver & passenger seat insert
  • Halo-inspired Cockpit Safety Structure

Under the bonnet

RPE Gen5 1340cc or 1500cc

As proven by Radical’s own best-selling SR3 race car, our stroked 1500 proves you don’t need capacity to deliver outstanding performance. Loved by circuit and off-road racers alike, this RPE-developed variant benefits from bespoke components including a forged Arrow crank and unique Cosworth pistons.

Learn more
RPE-Suzuki 1.5 litre

Where to race your SR3 XXR?

Find your nearest Radical series by browsing our global list of Radical Cups. Go wheel-to-wheel with like-minded racers and hone your racing skills. All our series have technical support, trackside hospitality and media coverage to help you get the most from your Radical racing experience, both on and off the track.

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Find a Dealer

Radical has over 30 dealers across the globe. Locate your nearest dealer and contact them for further information.

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Find a Used Radical

Looking to purchase a second-hand Radical? Browse our global inventory of used cars and find your perfect pre-loved car today.