Radical SR3 vs SR10 — Technical Comparison (with MY25 Updates)

The Radical SR3 and Radical SR10 represent two distinct tiers in Radical Motorsport’s range of purpose-built race cars. While both share the same lightweight DNA and aerodynamic efficiency, the MY25 updates bring meaningful advances in safety, reliability, performance and personalization. This comparison highlights their key technical specifications, recent updates and competitive characteristics as used in one-make series such as the Radical Cup Europe.

⚙️ Technical Specifications

Note: Figures for 0–100 km/h, weight and power are approximate and may vary by spec/region.

🧩 Design Philosophy & MY25 Updates

Radical SR3 – Precision and Accessibility

The SR3 remains Radical’s best-selling race car, designed for maximum cornering speed, reliability and cost efficiency. Its lightweight chassis, agile platform and simpler maintenance make it ideal for driver development, club racing and one-make championships.
MY25 updates relevant to SR3 XXR:

• New in-house carbon single seat with integrated wrap-around head-rest made from pre-impregnated carbon fibre — stronger and lighter than previous GRP seat.
• Improved safety for twin-seat option: Kevlar inserts, stronger seat mounts and bracketry.
• Enhanced harness options: four different colours for customisation.

Radical SR10 – Power and Performance

The SR10 pushes Radical’s formula to the extreme. With turbocharged power and professional-level capability, it caters to experienced racers seeking near-GT level performance in a lightweight prototype.
MY25 updates relevant to SR10 XXR:

• Redesigned bellhousing for improved reliability and reduced cracking risk.
• Front splitter re-engineered using aerospace-grade epoxy resin for improved fitment and durability.
• Aerodynamic adjustment: side-pod radius changed to shift 2.5% of balance toward the front axle; at 160 mph this translates to about 11.5% more frontal load, reducing understeer and tyre scrub.
• Steering rack ratio changed from 1:43:1 to 1:71:1 to reduce driver effort and fatigue in extended events.
• New lightweight flywheel and clutch for quicker blip response, smoother downshifts, and reduced rear-axle shift-locking.
• Expanded customisation: new bodywork colours, lightweight Braid wheels, and factory-applied liveries.

🏁 On-Track Performance & Driver Experience

Driver Experience:

• The SR3 rewards precision, line discipline and momentum management — perfect for drivers mastering prototype race craft.
• The SR10 delivers a visceral, high-speed experience, demanding confidence and control, offering GT-level thrills in a lighter package.

🔍 Summary & Application

Summary

The Radical SR3 remains a cornerstone of prototype racing: approachable, rewarding, cost-effective. Meanwhile, the SR10 elevates the formula with high power, advanced engineering and performance-first upgrades. The MY25 enhancements across both models ensure they remain competitive, reliable and ready for modern racing demands.

Recommended Applications

• Club racing, driver development, one-make series: SR3
• Endurance races, elite prototype grids, high-speed events: SR10
• Mixed events (e.g., supporting series like Radical Cup Europe): Both models are eligible — teams/drivers choose based on budget, experience and objectives.

🔗 More Information

• Official Site: www.radicalmotorsport.com
• Radical Cup Europe: www.radical-cup-europe.com
• Contact: radical-cup-europe@creventic.com