SR10 XXR
Pure extreme performance.
Power
425 bhp
Weight
725 kg
MotorPark Laptime
01:34.320
Pure extreme performance. The top-of-the-range Radical with extra grunt from a turbo-charged engine.

Ideal for 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 high horsepower, long-life powertrain, the Radical SR10 is everything you’d expect from a Radical – turbocharged.
The SR10’s sole purpose is to out-run and out-manoeuvre the competition whilst remaining easy to drive and cost-effective to run. Radical Performance Engines (RPE) cutting-edge engine tuning capabilities and Ford’s EcoBoost's reliable engine architecture come together to unleash a powerful race engine with 425bhp and 380lb-ft of torque. 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.
SR10 XXR Standard Equipment
Body
- Lightweight spaceframe chassis with FIA-specification safety cell and crash structure
- LMP-inspired, high-downforce composite bodywork
- XXR-generation LED race lighting including FIA high-intensity central rain light
- Bi-plane high-downforce rear wing and diffuser
- XXR-generation rear wing endplates
- Le Mans pre-preg carbon composite mirrors
Engine
- RPE-Ford 2261cc turbocharged engine — 425bhp and 380lb-ft
- Direct injection, twin-independent variable cam timing and drive-by-wire throttle
- Custom Garrett G-Series turbocharger
- Forged motorsport pistons and connecting rods with bespoke dry-sump system
- Latest Life Racing ECU with detailed interrogation function for maintenance and analysis
- Hi-flow racing exhaust system
Power Train
- Six-speed Hewland sequential transaxle
- Radical-developed paddle-activated gearshift system with auto-blipper
- Automatic torque-biasing limited-slip differential
- Mid-engined, rear-wheel drive
Suspension
- Fully adjustable Nik-Link suspension system
- Front and rear unequal-length top and bottom wishbones with fabricated uprights
- Front and rear adjustable pushrods
- Lightweight cast aluminium uprights for improved durability
- Interchangeable roll bars
- Intrax triple-adjustable dampers with Anti-Roll Control technology
Cockpit
- Two-seater chassis with twin or single-seat options, optimised for a moulded race seat insert
- AiM Formula wheel with integral LCD display, lightweight shift paddles and on-wheel switching
- LCD rev counter, gear indicator, shift light and engine/gearbox strategy manettino controls
- Built-in SmartyCam video system with GPS, brake pressure and steering logging sensors
- Pre-preg carbon-fibre dashboard with waterproof backlit touchpad
- Dash-mounted brake bias adjuster
- Wind deflector
Features
- Radical four-pot calipers with 315mm x 35mm fully-floating 48-vane discs, front and rear
- Front and rear brake cooling
- Solid-state Power Distribution Module with CAN-linked wiring and telemetry
- Data integration for tyre pressure and temperature monitoring and laser ride height logging
- FIA-specification foam-filled 77-litre (20 US gallons) fuel cell
- Full electronic fire extinguisher system
- Lithium-Ion battery with trickle-charger
Wheels and Tyres
- Radical XXR design centre-lock cast aluminium racing wheels
- 8" x 15" diameter front and 10.5" x 16" rears
- Slick and wet tyre options — Hankook recommended by Radical
Dimensions
- Length: 4077mm
- Width: 1799mm
- Height: 1093mm
- Weight: 725kg
SR10 XXR Options
- Billet upright upgrade
- Additional silencer
- Pre-preg carbon-fibre double front dive planes
- Carbon-fibre front splitter and rear diffuser
- Air jack system
- Advanced dynamic laser ride height logging, front and rear
- Tyre pressure and temperature monitoring system
- Suspension logging sensors
- Dry-break refuelling system
- Electronic Power Assisted Steering (EPAS)
- Nik-Link roll bar set
- Forward-facing stay head protectors
- Composite halo head restraint
- Halo-inspired Cockpit Safety Structure
- Driver and passenger seat inserts

