The track-only model brings a series of updates compared to its SR3 XX predecessor
UK-based Radical has unveiled the SR3 XXR, the latest version of the SR3 line of racecars coming with a new engine, small styling revisions, and chassis tweaks to make it faster around the track. Aerial Fibre Optic Cable
Compared to its Radical SR3 XX predecessor, the new SR3 XXR has redesigned LED graphics for the headlights and the taillights, a central fin at the back inspired by LMP racecars, new rear wing endplates, plus an optional carbon fiber splitter and diffuser. The optional halo structure is retained for the safety of the driver, as with the FIA-certified spaceframe chassis.
The interior is offered in two-seater and single-seater configurations with an optional dashboard made of pre-preg carbon fiber. AiM’s Formula Wheel has an integrated display, switches, and gearshift paddles. The cabin is fully exposed so the touchpad on the dashboard is waterproof. If you want to record your track performance there is the Data Pack option including a SmartyCam video system with GPS and steering logging sensors.
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The SR3 XXR rides on a new set of lightweight cast-aluminum center-lock wheels measuring 14 inches at the front and 15 inches at the rear, shod in slick or wet tires. The track-only model also gains new brakes from AP Racing with 280 mm (11-inch) discs and four-pot calipers all around. The fully adjustable Nik-link suspension features unequal-length wishbones, adjustable pushrods, and interchangeable roll bars. Furthermore, a set of bespoke fully adjustable dampers by Intrax are optionally available.
Radical’s new “Generation 5” dry-sump 1.5-liter or 1.3-liter four-cylinder engines bring increased power and torque figures, while being biofuel-ready (petrol / E85). The hand-built mid-mounted mills produce up to 232 hp (173 hp / 235 PS) which doesn’t sound like a lot but thanks to the lightweight nature of the vehicle, it translates to over 350 hp per tonne. Power is transmitted to the rear axle through a recalibrated six-speed sequential gearbox with the help of a Quaife limited-slip differential.
Figure-8 Fiber Optic Cable The company didn’t announce pricing for the SR3 XXR but used examples of the previous SR3 XX are currently listed for $100k on Radical’s website so it should be more expensive than that.