Radical SR1 XXR prototype

SR1 XXR

The introduction to Radical. The car the ladder starts on.

188 bhp

Power

510 kg

Weight, 1,124 lb

2m 11s

Silverstone

Standard equipment

Body

  • Lightweight spaceframe chassis with FIA-specification safety cell and crash structure
  • LMP-inspired, high-downforce composite bodywork
  • LED race lighting including FIA high-intensity central rain light
  • XX-generation Le Mans pre-preg carbon composite mirrors

Engine

  • Gen 5 RPE liquid cooled, in-line four, DOHC, 16 valve, 1340cc
  • 188 bhp at 9,150 rpm, 115 lb ft at 7,250 rpm
  • Gen 5 RPE dry sump and cooling system
  • Gen 5 RPE coil-on-plug ignition system
  • Electronic drive-by-wire
  • Life Racing engine management system and data logging
  • Hi-flow racing exhaust system

Cockpit

  • Two-seater chassis with twin or single-seat options, optimised for a moulded race seat insert
  • AIM MXS display unit with LED rev counter, gear indicator, shift light and data logging
  • Dash-mounted brake bias adjuster
  • Quick release steering wheel
  • Wind deflector

Dimensions

  • Length 3,860 mm
  • Width 1,560 mm
  • Height 1,020 mm
  • Weight 510 kg

Features

  • Radical four-pot calipers, 240 mm dia. x 25 mm, 30-vane ventilated discs front and rear
  • Aluminium, foam filled 54L fuel tank
  • Full 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

Suspension

  • Fully adjustable Nik-link suspension, front and rear unequal length top and bottom wishbones, fabricated uprights, adjustable pushrods
  • Interchangeable roll bars
  • Intrax dampers

Wheels and tyres

  • Radical cast aluminium wheels
  • 7" x 13" diameter front and 9" x 13" rears
  • Semi-slick and wet tyre options, Radical recommends Hankook

Options

Available to order

  • Convenience Pack (engine oil preheater and fuel sampling/drain kit)
  • Quiet track day silencer
  • Loud exhaust LED race lights
  • Dash mounted brake bias adjuster
  • Enhanced Data Pack (SmartyCam video system with GPS and race logging, including brake pressure and steering sensors)
  • FIA certificated fuel cell
  • Nik-Link rollbar set
  • Forward-facing stay head protectors
  • Composite halo head restraint
  • Passenger seat belts and headrest
  • Driver and passenger seat inserts

Start here.

The SR1 is the first rung. Crown runs the car, the spares and the race weekend, so the only thing you have to learn is the driving.