The SR1 Race Car

Designed for enthusiasts looking to take their circuit driving to the next level with a focused sports-racing car, the SR1 concept wraps up the Radical ownership experience into one easy package with a comprehensive standard specification that is ideal for trackdays and club motorsport, including circuit racing, hillclimbs and sprints.

The SR1’s LMP-inspired styling is no accident. Developed by the same team that created Radical’s SR9 LMP2 racecar, the SR1 mirrors current prototype design, while the two-seater cockpit is ideal for professional driving tuition, or even entertaining business partners and friends. Powered by the exceptionally reliable, 185bhp RPE-Suzuki four-cylinder engine - used to great effect in a wide range of Radical’s existing products - the SR1 features a six-speed sequential gearbox as standard (with Radical's famous paddleshift system as an option) and a Quaife ATB differential ensuring very high levels of grip and control.

Braking is provided by 240mm, 30-vane ventilated discs with four-pot calipers that generate exceptional stopping power. Occupants are protected by a comprehensive safety cell and deformable crash structure tested to FIA standards, racing-specification harnesses and an integral fire extinguisher system. Latest-generation sportscar aerodynamics mean that the SR1 sticks to the track like only a Radical can, with grip limits far beyond the realms of its market rivals thanks to Radical-specific Dunlop tyres.

SR1 Overview

  • Length: 3.85m
  • Height: 1.04m
  • Width: 1.62m
  • Min Weight: 480 kg
  • Max Speed: 138mph
  • 0-60mph: 3.6 sec
  • 50-100mph: 6.1 sec
  • Braking G's: 1.8
  • Cornering G's: 2.3

SR1 Standard Features

  • Two-seater powder-coated carbon steel spaceframe chassis with integral safety cell and aluminium front crash structures - complying with MSA safety requirements
  • 185bhp RPE-Suzuki 1340cc 4-cylinder double overhead cam engine with a wet-sump oil system, four butterfly, 35mm fuel injection system with composite ram air box and lightweight steel flywheel with multi-plate clutch
  • 44 litre foam-filled aluminium fuel tank mounted behind the driver within the safety cell
  • Six-speed sequential transverse gearbox driving a chain drive system, torque-biasing limited-slip differential for seamless diff lock-up
  • Fully adjustable Nik suspension system front and rear featuring unequal length top and bottom wishbones, fabricated uprights, forged steel centre lock hubs and interchangeable anti-roll links with single-adjustable, coil-over dampers
  • Radical four-pot calipers front and rear acting on 240mm dia. × 25mm, 30-vane ventilated discs front and rear
  • Radical cast aluminium wheels - 7" × 13" dia. front and 9" × 13" dia. rears with Dunlop racing tyres
  • Four-piece lightweight fibre-glass bodywork with self-coloured gel coat finish, composite front diffuser with removable, high-nose, low-drag front section
  • Removable composite tail section with integral induction intake and ventilation grilles and aluminium rear wing with end plates
  • Rear brake and fog lights
  • Moulded composite, high-sided, drivers and passenger seats with adjustable mounts
  • Carbon-composite dashboard featuring a 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

SR1 Cup Additional Options

  • Six-speed paddleshift gearchange with autoblipper for seamless upshifts and clutchless downshifts
  • Passenger seat belts
  • Foam rollbar stay protectors
  • Quick-release steering wheel
  • AiM Pista race logging dash with GPS
  • AiM SmartyCam video system
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