Meet The Cars / Radical SR3 RS

A true ‘world’ supercar, the SR3 RS is as much at home flat-out through Eau Rouge, as it is providing passenger rides for your friends around the Nordschleife.  

It is the world’s most successful sports-racer, with over 900 satisfied customers. The SR3 RS is a sure-footed, highly-developed racer, adept and rapid in the hands of both the novice trackday driver, and seasoned racing professional.

The SR3 RS is powered by the Powertec four-cylinder range of engines, from 1340cc to 1500cc and beyond. It’s a proven classwinner, not only in Radical’s single-marque race series such as the Radical SR3 Challenge, but many other multi-marque championships around the world too.

First launched in 2002, the SR3 RS incorporates a six-speed sequential transmission, and drives via the Power Drive gear drive system, developed in partnership with Quaife especially for the SR3. With an integral torque-biasing differential, this reliable, easy-to-maintain unit is one of the SR3 RS’s strengths, offering strong traction out of corners. Swapping gear ratios to suit specific tracks is a straightforward job.

Four-pot callipers, with vented discs on each corner, endear the SR3 RS with awesome stopping power.

The SR3 RS features Radical’s FIA-specification crash box and central safety cell, whilst styling cues taken from the SR9 LMP2 car, including the high-nose front-end, offer not only dramatic styling, but also advanced aerodynamics, with a full-underfloor diffuser for leech-like grip. Dunlop tyres, developed exclusively for the SR series, complete the package.

An ergonomic and comfortable twin-seat cockpit makes the SR3 RS an ideal trackday car and endurance racer, with in-built LIFE engine management and datalogging, and an advanced AiM LCD dash/multifunction display. Centre-locking wheels, and optional air jacks mean that, should the weather turn, the switch from slick to wet tyres is rapid and easy.



SR3 RS Overview
Length: 4.10m
Height: 1.04m
Width: 1.79m
Min Weight: 570 kg
Max Speed:: 155mph
0-60mph: 3.1 sec
50-100mph: 5.3 sec
Braking G's: 2.0
Cornering G's: 2.5
SPA Laptime: 2m 25sec


SR3 RS Standard Features
  • Two-seater, powder-coated carbon steel spaceframe chassis with integral safety cell - complying with FiA Production Sports Car Safety Structure Test
  • Aluminium honeycomb front crash structures complying with FiA Production Sports Car Crash Test
  • Removable forward facing steel chassis stays
  • 54 litre foam-filled aluminium fuel tank mounted behind the driver within the safety cell
  • Fully adjustable pedal box
  • Driver seat-belt complying with FiA requirements
  • Powertec 1340cc 4-cylinder double overhead cam engine, dry sump with remote oil reservoir & oil cooler
  • Engine performance: 210bhp, 130ft/Ibs, 10,500rpm
  • Electrical pump to circulate water to prevent heat soak
  • Four butterfly, 41mm fuel injection system with composite ram air box
  • Lightweight steel flywheel with multi-plate clutch
  • Stainless steel manifold and silencer
  • Six speed sequential transverse gearbox
  • Gear drive system incorporating torque-biasing limited-slip differential for seamless diff lock-up, interchangeable gear ratios and integral reverse gear system
  • PowerTec transmission oil pump and radiator
  • Fully adjustable Nik suspension system front and rear - unequal length top and bottom wishbones, fabricated uprights, forged centre lock hubs and interchangeable anti-roll links
  • Single-adjustable, coil-over dampers
  • Radical four-pot calipers front and rear
  • 260mm dia. 25mm, 30-vane ventilated discs front and rear
  • Radical centre lock, cast aluminium wheels - 8" × 15" dia. front and 10½" × 16" dia. rears
  • Dunlop bespoke slick tyres
  • Six-piece lightweight fibre-glass bodywork with self-coloured gel coat finish
  • Owners name on side of cockpit
  • High downforce composite front diffuser with removable, high-nose, low-drag front section
  • Central brake cooling duct connected to carbon composite brake cooling shrouds
  • Wheel arch louvres front and rear
  • Rear view mirrors
  • Quick-release front cockpit fairing
  • Composite side pods with air management system and radiator inlet
  • Composite side skirts
  • Removable composite tail section with integral induction intake and ventilation grilles
  • High downforce bi-plane rear wing with end plates
  • Rear brake and fog lights
  • Moulded composite, high-sided, drivers and passenger seats with adjustable mounts
  • Carbon-composite dash surround
  • Quick-release steering wheel with collapsible column
  • Radical display unit incorporating an LED analogue rev counter, gear indicator, shift light, four LCD displays of engine parameters/speed and warning lights
  • Dash-mounted brake bias adjuster

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