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Radical Launches New SR3 RSX

SR3 RSX logo


Since 2002 the SR3 has been providing drivers thrilling, cost-effective, high-performance track driving and racing, and now the 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 SR3 is the world's most successful sports-racer, with over 900 satisfied customers. The SR3 RSX has been carefully developed over the last 12 months, incorporating a show-stopping new look and latest-generation LMP aerodynamics into the proven, lightweight and high-performance SR3 powertrain package.


In our continual quest to reduce the cost of racing while maintaining all the thrills, the 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 powerplant 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.
These new engines and the previous generation of RPE 1500cc engines will both be eligible for all 2015 Radical SR3 Championships - the Radical Clubman's Cup, Grove & Dean Motorsport Insurance Radical SR3 Challenge and Radical European Masters. From 2016 onwards only the RPE 1500 Generation 3 short stroke engine will be eligible.


Whilst the 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 RXC development programme, with a lowered deck angle to improve 'ground effect' aerodynamic grip. Above this sits a new dual exit exhaust system.

Suspension and brakes

For the first time, the 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 SR3 RSX the most advanced specification yet.


The 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.

Performance figures

  • Power: 210rwhp @ 9,500rpm
  • Torque: 124lb/ft. @ 8,200rpm
  • Weight from: 570kg
  • Power to weight ratio: 368hp/tonne
  • 0-60mph: 3.1 seconds
  • VMax: 155 mph

* All figures quoted at rear wheels on Radical’s rolling road – add 20% for crank figures


Taking the World’s favourite track racer to the next level