SR10 XXR

SR10 XXR

Base Price €176.337,-
Power425HP
Weight725KG
Speed2,4 sec
Description

The SR10 XXR represents pure extreme performance in the Radical lineup. This turbocharged beast delivers 425 hp and 380 lb-ft of torque from its bespoke RPE-Ford engine. It’s built for those who demand maximum track performance with the reliability to handle session after session without compromise.

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Description

Do you want the ultimate track weapon? The SR10 XXR is Radical’s answer to those who refuse to compromise on performance. This isn’t just another step up: it’s a completely different level of driving experience that will challenge everything you thought you knew about track cars.

At the heart of the SR10 XXR lies a masterpiece of engineering. The 2.3-liter turbocharged RPE-Ford engine pumps out 425 hp and 380 lb-ft of torque through a custom Garrett turbocharger. This engine is built from the ground up for racing with forged pistons, connecting rods, and a bespoke dry-sump system that can handle the punishment of back-to-back track sessions.

The power delivery is intoxicating. That turbo torque hits hard and keeps pulling, giving you acceleration that feels relentless. Yet despite the massive performance increase, the SR10 XXR retains that legendary Radical balance and predictability. Professional drivers consistently praise its stability through high-speed corners and the confidence it inspires at any speed.

That turbo engine and aerodynamic efficiency translates to blistering performance – you’ll rocket to 100 km/h in just 2.7 seconds. On Silverstone GP, the SR10 XXR posts an incredible 1:58 lap time. That’s serious supercar-embarrassing performance that puts you in genuine race car territory.

The advanced Hewland GT3-derived gearbox handles all that torque effortlessly, while the enhanced braking system with 315mm discs and improved cooling keeps you in control lap after lap. This is a car built for those who live for that next session, that next personal best, that next moment of pure driving perfection.

Features

BODY
  • Lightweight spaceframe chassis with FIA certified safety cell
  • FIA certified 77-litre (20 US gallons) fuel cell
  • Composite bodywork, front splitter and rear diffuser
  • Carbon fibre high-downforce bi-plane rear wing
  • LED running lights and brake lights, FIA high-intensity central rain light
POWER TRAIN
  • Six-speed Hewland sequential transaxle gearbox
  • Paddle-activated gearshift system with auto-blipper
  • Automatic torque-biasing limited slip differential
ENGINE
  • RPE-Ford 2261cc turbocharged engine with direct injection
  • Forged motorsport pistons, connecting rods and bespoke dry-sump
  • Twin-independent variable cam timing and drive-by-wire throttle
  • Custom Garrett turbocharger
  • Life Racing ECU engine management system and data logging
  • Hi-flow racing exhaust system
  • Lithium-Ion battery and trickle-charger included
SUSPENSION
  • Unique fully adjustable Nik-Link suspension system
  • Front and rear wishbones, adjustable pushrods
  • Servicable aluminium cast uprights
  • Interchangeable roll bars front and rear
  • Intrax triple-adjustable dampers with Anti-Roll Control (ARC) technology
COCKPIT
  • Driver and passenger seats with 6-point seatbelts
  • AiM Formula steering wheel with integrated 4.3” TFT display
  • Shift paddles and on-wheel switching including pit limiter
  • Rev counter, gear indicator, shift light, and predictive lap time
  • SmartyCam video system with GPS
  • Brake pressure and steering logging sensors
  • Carbon Fibre Dashboard with backlit touchpad and brake bias adjuster
  • FIA Fire Extinguisher with dash mounted and external activation
WHEELS & TIRES
  • Bespoke Braid centre lock, cast aluminium racing wheels
  • 8" × 15" diameter front and 10.5" × 16" rears
  • Hankook Racing Tyres (slick & wet options)
FEATURES
  • Bespoke Radical four-pot calipers with front & rear brake cooling
  • 315mm x 35mm fully-floating 48-vane disc brakes
DIMENSIONS
  • Length: 4077mm
  • Width: 1799mm
  • Height: 1093mm
  • Weight: 725kg

Frequently Asked Questions

How does the turbo engine change the driving experience?
Dramatically. The turbo delivers massive torque from low RPMs, giving you acceleration that feels almost violent compared to naturally aspirated Radicals. The power delivery is more linear and punchy, making overtaking effortless. You'll notice the difference immediately - it pulls harder everywhere in the rev range.
Can beginners handle the SR10's power?
The SR10 still maintains Radical's characteristic balance and predictability, but it demands more respect. Most drivers should gain experience in an SR1 or SR3 first. The power delivery is manageable, but you need solid car control skills to extract the full potential safely.
What's the real-world lap time difference from an SR3?
On most tracks, expect 4-6 seconds faster than an SR3 XXR. The combination of extra power, better brakes, and enhanced aerodynamics creates significant performance gains. On power circuits, the turbo torque makes the difference even more pronounced.
Is the SR10 significantly more expensive to run than an SR3?
Yes, expect higher running costs. The turbo engine uses more fuel, brake components wear faster due to the extra performance, and you'll go through tyres quicker. However, the engine reliability is excellent thanks to the robust RPE engineering. Many owners find the extra cost worthwhile for the performance gain.
How does the Hewland gearbox compare to the standard sequential?
The Hewland unit is much more robust and handles the SR10's torque output effortlessly. Shifts are crisper and more precise, especially under heavy load. It's derived from GT3 racing technology, so it's built for professional-level abuse. The reliability improvement alone justifies the upgrade.
Should I get the electronic power steering option?
Many drivers love it, especially for longer sessions. It reduces physical fatigue while maintaining excellent feel and feedback. If you're doing endurance racing or extended track days, it's worth considering. For pure track day use, the manual steering gives more traditional feedback.

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