SR10

RADICAL SR10: PURE EXTREME PERFORMANCE

• THE NEW BENCHMARK FOR COMPETITION, MOTORSPORT COUNTRY CLUB AND TRACKDAY CARS

• LOWER RUNNING COSTS FROM A LONG-LIFE 425BHP RPE-FORD ECOBOOST ENGINE AND HEWLAND GEARBOX

• MORE REAL-TIME DATA, THE LATEST DASH ELECTRONICS AND OPTIONAL POWER STEERING CREATE THE ULTIMATE DRIVER’S CAR

• ELIGIBLE FOR RADICAL RACE SERIES WORLDWIDE

With a high horsepower, long-life powertrain, the new Radical SR10 is everything you’d expect from a Radical – turbocharged. Targeted at track-day enthusiasts, motorsport country club members, and racers across the globe, the SR10 delivers more power and torque than has ever before featured in Radical’s SR line-up, with a new engine and drivetrain package optimised for both performance and durability.

The new SR10 is designed to keep you on the track for longer, faster. Whether lapping casually at your local motorsport country club, or dicing with GT and LMP competition in an around-the-clock enduro, the SR10’s sole purpose is to out-run and out-manoeuvre the competition whilst remaining easy to drive and cost-effective to run.

Demand from Radical’s customers for a turbocharged variant of our legendary SR line of Sports Racers propelled the new model’s extensive test programme, which continued behind closed doors throughout the UK’s COVID-19 enforced lockdown. Given the SR platform’s longstanding reputation for providing electrifying performance through optimised aerodynamics and outstanding 

grip, the primary focus was on maximising both the new powertrain’s incredible performance as well as its durability, for easier operation and long service intervals.

The SR10 applies Radical Performance Engines (RPE) cutting-edge engine tuning capabilities with the proven durability of Ford’s EcoBoost engine architecture. This is no ordinary production unit; as Radical’s in-house powertrain division, RPE have developed a bespoke turbocharger, induction and engine management package to release over 425bhp and 380lb-ft of torque from the engine. A bespoke Garrett G-Series turbocharger delivers better throttle response and reduced lag, with forged pistons and connecting rods and a bespoke dry-sump lubrication system for bulletproof durability.

This high-output engine is integrated with a new Hewland GT3-derived six-speed gearbox. The SR10 is Radical’s first application of the Hewland TMT transaxle, originally developed for the FIA F2 single-seater.

This compact unit includes an integral paddleshift actuator and innovative WaveTrac ATB differential for maximum traction in all conditions, and is a perfect match for the high torque generated by the 2.3L High Output variant of the RPE-Ford inline four-cylinder engine.

As recently debuted on the SR3 XX, the driver’s environment features a new wheel-mounted LCD multi-page display and additional car controls at the driver’s fingertips. On the SR10 this includes multiple engine and gearbox mapping options and adjustable weighting for the optional electronic power steering system, also a first for the SR model line.

 ENGINE

• RPE-Ford 2261cc, 425bhp and 380 lb-ft, turbocharged engine with direct injection, twin-independent variable cam timing and drive-by-wire throttle

• ​Custom Garrett turbocharger

• Billet Motorsport pistons, forged connecting rods and bespoke dry-sump system

• Latest Life Racing ECU with detailed interrogation function for maintenance and analysis

• High-flow racing exhaust system

POWERTRAIN

• Six-speed Hewland sequential transaxle

• ​Radical developed paddle-activated pneumatic gearshift system with auto-blipper

• WaveTrac torque-biasing limited-slip differential

• Mid-engined, rear-wheel-drive

BODY

• Lightweight spaceframe chassis with FIA-specification safety cell and crash structure

• LMP-inspired, high-downforce composite bodywork

• LED lighting including FIA high-intensity central rain light

• Bi-plane high-downforce rear wing and under-body rear diffuser

• Composite mirrors

• Sculpted dual-angle rear wing endplates

• Double front dive planes

SUSPENSION

• Fully adjustable Nik-link suspension system, front and rear unequal-length top and bottom wishbones, lightweight fabricated uprights

• Front and rear adjustable pushrods

• Forged centre locked hubs

• Interchangeable anti-roll bars

• Intrax triple-adjustable dampers with Anti-Roll Control (ARC) technology

DIMENSIONS 

• Length: 4077 mm

• Width: 1799 mm

• Height: 1093 mm

• Weight: circa 725 kg

BRAKING

• Radical four-pot calipers on 300mm x 35mm front, 300mm x 26mm rear fully-floating 48-vane disc brakes

COCKPIT

• Two-seater chassis with twin or single-seat options, optimised for use with a moulded race seat insert

• Multifunction wheel-mounted dash with integral TFT LCD display, lightweight shift paddles and on-wheel switching

• Display functions include digital rev counter, gear indicator, shift light and engine/gearbox strategy manettino controls

• Ergonomic dashboard with waterproof, backlit momentary touchpad

• Dash-mounted brake bias adjuster

• Wind deflector

DATA & ELECTRONICS

• Solid-state Power Distribution Module (PDM) with Controller Area Network (CAN) linked wiring and telemetry

• Data integration allowing additional data logging options

SAFETY & SECURITY

• FIA specification, foam-filled 77L fuel cell

• Full fire extinguisher system

WHEELS & TYRES

• Radical centre lock, cast aluminium wheels - 8" × 15" dia. front and 10.5" × 16" dia. Rears

• Bespoke slick & wet tyre options