Praga R1 (Radical SR3)
The Praga R1 is a lightweight, purpose-built track car developed by Czech manufacturer Praga as a modern club-racing prototype. Designed around a carbon composite chassis and an ultra-simple, aero-focused formula, it delivers huge pace from very little power — exactly the kind of machine that rewards momentum, precision, and commitment.
Key Specs (BoP-dependent, typical sim values)
Powertrain: 2.0L turbocharged inline-4 (mid-mounted, longitudinal)
Total Output: ~210 hp (157 kW)
Redline: ~7,500 rpm
Transmission: 6-speed sequential
Weight: ~592 kg
Dimensions: ~4,200 mm long × 1,980 mm wide × 1,050 mm tall | Wheelbase ~2,430 mm
Tires: Slick racing tires on lightweight motorsport wheels
Brakes: Ventilated racing discs with motorsport calipers
Layout: Mid-engine, rear-wheel drive
In the Simulator Feel
The Praga R1 is a featherweight, high-downforce sprint car that feels alive at every speed. With so little mass to manage, it changes direction instantly and absolutely loves aggressive commitment into corners. It’s not about raw horsepower — it’s about carrying speed, using the aero, and keeping the car balanced through fast transitions and late braking zones.
Engine & Sound: The turbocharged four-cylinder gives off a sharp, mechanical rasp with a pronounced turbo surge under acceleration. It doesn’t produce a big-bore soundtrack, but it’s purposeful and race-bred, with crisp throttle response and a strong midrange punch that suits short, technical tracks perfectly.
Handling Characteristics:
Cornering: Extremely nimble with immediate turn-in and excellent mid-corner balance.
Traction: Good for the power level, but momentum is key — overdriving the rear tires quickly slows lap time.
Braking: Outstanding braking performance thanks to the low weight and racing hardware.
Top Speed: Modest compared with larger prototypes, but more than enough for tighter circuits and club tracks.
Driving Style Tip: Drive it like a momentum car. Smooth steering, clean exits, and disciplined braking will make the Praga R1 feel ridiculously fast. It shines on technical circuits where lightweight agility matters more than outright power.
Livery & Aesthetics: The R1 looks every bit like a modern endurance-style mini prototype — low-slung, dramatic, and compact, with aggressive aero surfaces and a no-nonsense cockpit. Its race car proportions and visible downforce elements give it a serious, exotic presence in the sim.
Whether you're chasing hot laps or wheel-to-wheel sprint action, the Praga R1 is one of the purest lightweight racers in sim racing — simple, sharp, and hugely rewarding when driven well.