Since 2002 the SR3 has been providing drivers thrilling, cost-effective, high-performance track driving and racing, and now the Radical SR3 RSX, with its dramatic styling, improved aerodynamics and extended durability, will blow you away in a sportscar package that's faster over any lap, easier to drive and cost even less to run than before. First launched in 2002, the Radical SR3 is the world's most successful sports-racer, with over 900 satisfied customers. The SR3 RSX has been carefully developed to incorporate a show-stopping new look and latest-generation LMP aerodynamics into the proven, lightweight and high-performance SR3 powertrain package.

DESIGN

While the Radical SR3 RSX retains the class leading, confidence inspiring and FIA-approved SR3 spaceframe chassis, the differences are obvious as soon as you set eyes on the spectacular new styling. The stepped cockpit surround echoes current Le Mans Prototype (LMP) styling whilst still affording excellent visibility for the driver and passenger. Advances in Computational Fluid Dynamics (CFD) modelling have seen the SR3 RSX gain a redesigned front diffuser. This features a 'double-tunnel' profile from leading edge to rear and for the first time integrates into the wheelarch leading edges for improved airflow. This in turn improves the front aerodynamic efficiency of the car without compromising front-rear balance, and also creates greater stability under braking.

The front view is dominated by an 8-LED race lighting array, affording improved forward visibility and track illumination for night or poor-weather racing. Moving to the rear a new open-deck tail improves airflow, grip and cooling at the back of the car, and incorporates high-intensity LED brake and rain lighting. The rear diffuser profile has been greatly revised using experience gained from the Radical RXC development program, with a lowered deck angle to improve 'ground effect' aerodynamic grip. Above this sits a new dual exit exhaust system.

ELECTRONICS

The Radical SR3 RSX features the new AIM MXL2 multifunction LCD dashboard and datalogger, with expanded capability and a new high-contrast display. The MXL2 offers a black to white ratio nearly double its predecessor, fused with a graphical LCD offering great flexibility in alerts and information, including a real-time track map location for the first time. An ambient light sensor keeps the backlight at optimum brightness levels. The latest-generation SmartyCam HD GP can be added to the system to provide video with a realtime overlay of data, ideal for lap time improvement or corporate use at up to 720p resolution.

POWERTRAIN

In our continual quest to reduce the cost of racing while maintaining all the thrills, the Radical SR3 RSX features a new high-performance variant of the RPE 1500 Generation 3 short stroke engine, with more mid-range power and torque for faster laps, at the same time delivering longer service intervals and improved efficiency.

The 2015 Generation 3 four-cylinder engine features a new larger-diameter stainless steel tubular exhaust manifold, bigger 45mm individual throttle body induction system and redesigned air box, including bespoke inlet trumpets tuned for optimum torque, power and response. The benefits of this modern power plant include an increased factory warranty from 40 to 45 hours. Radical remains the only manufacturer in the world that offers this level of comprehensive factory guarantee on all road and race engines. Other benefits include a reduction in high-frequency vibration, leading to smoother running characteristics and increased component longevity, particularly camshaft drivetrain. The RPE 1500 Generation 3 short stroke engines produce lower levels of CO2, both in the manufacturing process and in running, through greater efficiency and reduced weight.

SUSPENSION & BRAKING

For the first time, the Radical SR3 RSX features fully-floating disc brakes front and rear as standard. 280mm 48-vane ventilated discs are gripped by four-piston calipers for phenomenal braking performance, and a hard-line braking system for greater consistency and improved feel over a full race distance. Intrax Racing Suspension adjustable dampers complete the package, making the Radical SR3 RSX the most advanced specification yet.

Specifications

ENGINE

RPE-Suzuki Generation 3 1500cc 4-cylinder DOHC engine, dry sump lubrication with remote oil reservoir. Oil cooler and electrical pump to circulate water to prevent heat soak. Twin battery 24v starting/charging system.

TRANSMISSION

Six-speed sequential transverse gearbox, pneumatic paddle-activated gearshift system with auto-blipper. Gear drive system incorporating Quaife torque-biasing limited-slip differential. Interchangeable gear ratios and integral reverse gear system. RPE transmission oil pump & radiator. Lightweight steel flywheel with multi-plate clutch.

CHASSIS

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.

BODY

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 and front brake ducts, towing eye. Composite side pods with air management system and radiator inlet, composite side skirts. Removable composite tail section with integral induction intake & ventilation grilles. High downforce bi-plane rear wing with end plates. High-intensity LED tail/brake lights and FIA-specification central rain light. Carbon Le Mans adjustable rear-view mirrors.

INTERIOR

Moulded composite, FIA high-sided driver & passenger seats with adjustable mounts. Carbon-composite dash surround with quick-release steering wheel and dash- mounted rotary brake bias adjuster. Manually-activated fire extinguisher with engine bay and cockpit nozzles.

FUEL TANK

77-litre foam-filled aluminium fuel tank mounted behind the driver within the safety cell, separated from occupant cell and engine bay by bulkhead.

ELECTRONICS

AIM MXL2 multifunction LCD display unit incorporating digital gear indicator, internal accelerometer and gyro, 10 LED shift light array and configurable display including track map option.

SUSPENSION

Fully adjustable Nik-link suspension system front & rear unequal length top & bottom wishbones, fabricated uprights, forged centre lock hubs and interchangeable anti-roll links. Single-adjustable Intrax Racing Suspension coil-over dampers with billet fittings.

BRAKES

Radical four-pot calipers front & rear on 280mm x 25mm fully-floating 48-vane disc brakes.

WHEELS

Radical centre lock, single-piece cast aluminium wheels 8"x15" dia. front and 101/2"x16" dia. rears.

TIRES

Dunlop bespoke slick tyres, front 200/580/R15, rear 265/605/R16

DIMENSIONS

L 4077mm W 1799mm H 1093mm