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Notes
The Radical SR3 RSX is a purpose-built sports racing car manufactured by British company Radical Sportscars, representing the third generation of the SR3 model line introduced in 2015. The RSX is powered by an RPE-tuned Suzuki Generation 3 inline-four, 1,500cc DOHC motorcycle engine producing 260 horsepower (155 kW), delivering extraordinary performance through a six-speed sequential transverse gearbox with pneumatic paddle-shift system and auto-blipper. Power is transmitted through a Quaife torque-biasing limited-slip differential to optimize traction.
The SR3 RSX achieves remarkable performance figures with 0-60 mph in just 3.1 seconds and a top speed of 155 mph, all while weighing less than 600 kilograms (approximately 1,300 pounds) thanks to its lightweight trellis chassis construction. The aerodynamic design incorporates LMP-style downforce generation, allowing sustained cornering loads up to 2G at high speeds. The car can also be ordered with a 1,340cc Supersport engine variant. The SR3 RSX combines accessibility with genuine racing performance, making it popular for track days, club racing, and dedicated racing series like the Radical Challenge, offering drivers an authentic prototype sports car experience at a fraction of the cost of traditional sports racing categories.
Rank
horsepower
210
WEIGHT KG
570
Power to Weight
0.37
CURRENT VALUE
$85,000
Tire
OEM Specs
engine Description
1.1L Inline-4
drive Type
RWD
0-60 MPH
17 SECs
TOP SPEED KPH
257
PRICE (MSRP) USD
$81,000
gearbox
4SPD MANUAL
torque
60 N.M
Model Years
2010-2020
YEAR NOTES
2014: The SR3 RSX debuted as the successor to the SR3 RS, featuring a more powerful RPE-Suzuki engine (available in 1.5L or 1.3L configurations) and producing up to 226 hp. It introduced a new aerodynamic package with improved downforce, modernized LED lighting, a fully digital dashboard, and a Motec data-logging system, enhancing driver feedback and vehicle diagnostics.
2015: Radical made minor refinements, focusing on reliability improvements for endurance racing. Some components were upgraded for durability, including enhanced cooling systems and improved brake components, ensuring consistent performance across various racing conditions.
2017: This year brought updates to the suspension system, offering new options for further tuning and adjustability. Radical introduced lightweight wheel options, allowing racers to reduce unsprung mass, which contributed to sharper handling and responsiveness on the track.
2018: Radical updated the cockpit design to improve driver comfort, adding a slightly revised seating position and optional padding upgrades. The electrical system was also enhanced for better reliability, especially in endurance events, ensuring uninterrupted performance for long track sessions.
2019: Minor changes were made to the aerodynamics package, refining the wing and diffuser setup to provide more stability and downforce at higher speeds. Radical also introduced additional customization options for the dashboard display, giving drivers more flexibility with data visualization.
2020: Radical introduced updated safety features in compliance with evolving racing standards, including enhanced seatbelt harnesses and additional rollover protection. Improved engine management software was also rolled out, optimizing power delivery and fuel efficiency for endurance-focused setups.
Compare to
Popular Radical SR3 RSX Mods by Level
From 9 documented buildsTrendsRadical SR3 RSX owners prioritize grip and braking, consistently opting for Dunlop and Hankook slicks. Builds escalate with Niko Racing uprights and Wilwood rotors and calipers, indicating a focus on suspension geometry and stopping power for track performance.
Race
9 builds
Tires
Hankook Ventus F2002· Hankook F200 C721· Dunlop Slick1· Dunlop Sport Maxx Slick1· Hankook Ventus TD1
Suspension
Niko Racing Uprights1
Brakes
Wilwood Rotors1· Wilwood Calipers1
Lap Times
| Time | Track | Car | Mod | Driver | Tire | Lap Date | Date Added | vs Predict | Pace |
|---|---|---|---|---|---|---|---|---|---|
| 1:36.4 | Thunderhill (East 3 Mile w/ Bypass) | Race | 11 Apr, 2015 | 06 Sep, 2022 | -11.8s | +10.63% | |||
| 2:08.8 | Spring Mountain Motor Resort (Mansell C 3.4 Mile) | Race | 20 Mar, 2021 | 28 Feb, 2026 | -11.06s | +7.45% | |||
| 58.8 | Bushy Park (International) | Race | 14 Mar, 2020 | 29 Jan, 2026 | — | ||||
| 1:33.9 | Oulton Park (International Circuit) | Race | 18 Apr, 2016 | 20 Jun, 2026 | -6.51s | +6.00% | |||
| 2:45.7 | Spring Mountain Motor Resort (Andretti B 4.1 Mile) | Race | 29 May, 2018 | 15 Feb, 2026 | -11.46s | +5.99% | |||
| 1:51.9 | Spring Mountain Motor Resort (Charleston Peak North 2.8 Mile) | Race | 09 Dec, 2022 | 14 Aug, 2024 | -7.13s | +5.52% | |||
| 1:36.2 | Kuwait Motor Town (National) | Race | 03 May, 2022 | 03 Nov, 2023 | -5.73s | +5.16% | |||
| 1:32.9 | MotorPark România (CW) | Race | 24 Oct, 2020 | 07 Mar, 2026 | -5.09s | +4.72% | |||
| 1:45.4 | Spring Mountain Motor Resort (Charleston Peak South 2.6 Mile CW) | Race | 14 Feb, 2023 | 23 Aug, 2024 | -5.71s | +4.69% | |||
| 1:35.3 | Anderstorp Raceway (Grand Prix) | Race | 09 Apr, 2021 | 18 Jan, 2026 | -5.13s | +4.66% | |||
| 48.9 | Kinnekulle Ring | Race | 28 May, 2017 | 28 Apr, 2023 | -2.55s | +4.45% | |||
| 2:18.9 | Spring Mountain Motor Resort (Mansell A 3.4 Mile) | Race | 01 Feb, 2020 | 12 Jan, 2026 | -6.26s | +3.90% | |||
| 1:05.3 | Donington Park Circuit (National CW) | Race | 18 Oct, 2018 | 31 Aug, 2021 | -2.85s | +3.77% | |||
| 2:00.3 | Calabogie Motorsports Park (CW) | Race | 19 Jun, 2017 | 23 Oct, 2021 | — | ||||
| 2:13.4 | Spring Mountain Motor Resort (Mansell C 3.4 Mile) | Race | 20 Apr, 2021 | 02 Sep, 2021 | -4.94s | +3.20% | |||
| 56.3 | Autódromo La Chutana | Race | 15 Feb, 2018 | 26 Jul, 2022 | -1.92s | +2.94% | |||
| 2:17.5 | Autobahn Country Club (Full Circuit) | Race | 17 Jan, 2022 | 16 Nov, 2024 | — | ||||
| 1:28.0 | Sydney Motorsport Park (GP Circuit) | Race | 25 Feb, 2015 | 21 Aug, 2021 | -2.74s | +2.68% | |||
| 1:18.5 | Atlanta Motorsports Park (CCW) | Race | 20 Oct, 2017 | 18 Jan, 2026 | -2.34s | +2.57% | |||
| 1:21.4 | The Bend Motorsport Park (West CW) | Race | 16 May, 2021 | 21 Jun, 2022 | -2.35s | +2.50% | |||
| 56.6 | Ring Knutstorp | Race | 22 Jul, 2022 | 13 Jun, 2026 | -1.61s | +2.44% | |||
| 1:25.2 | Barber Motorsports Park | Race | 03 Aug, 2020 | 28 Jul, 2022 | -2.34s | +2.37% | |||
| 1:01.8 | Autodromo Internacional De Codegua | Race | 24 Jun, 2017 | 18 Jan, 2026 | -1.56s | +2.17% | |||
| 1:50.0 | Watkins Glen International (Full Circuit w/ Loop) | Race | 17 May, 2017 | 08 Nov, 2022 | -2.41s | +1.89% | |||
| 44.9 | Brands Hatch Circuit (Indy Circuit CW) | Race | 30 Apr, 2017 | 15 Jul, 2022 | -0.81s | +1.56% | |||
| 1:00.1 | Autobahn Country Club (North Circuit) | Race | 02 Oct, 2016 | 18 Jan, 2026 | -1.06s | +1.52% | |||
| 1:09.6 | Motorsport Ranch-MSR Cresson (1.7 CCW) | Race | 14 May, 2020 | 05 Aug, 2021 | -1s | +1.24% | |||
| 2:19.3 | Autobahn Country Club (Full Circuit) | Race | 17 Oct, 2021 | 14 Jan, 2023 | -1.95s | +1.21% | |||
| 57.3 | Autódromo La Chutana | Race | 03 Mar, 2020 | 02 Jun, 2022 | -0.8s | +1.21% | |||
| 1:19.8 | Canadian Tire Motorsport Park-Mosport (Grand Prix Circuit) | Race | 31 Jul, 2016 | 18 Jan, 2026 | -1.1s | +1.19% | |||
| 1:39.3 | Dubai Autodrome International Circuit (International) | Race | 27 Jan, 2017 | 23 Jan, 2026 | -1.18s | +1.03% | |||
| 1:31.9 | Apex Motor Club I (Phase I) | Race | 19 Apr, 2021 | 20 Aug, 2021 | -1.1s | +1.03% | |||
| 2:04.0 | Silverstone (GP) | Race | 11 Sep, 2016 | 14 Jan, 2026 | -1.42s | +0.99% | |||
| 1:37.2 | Circuit Mont-Tremblant | Race | 22 Jul, 2017 | 18 Jan, 2026 | -1.03s | +0.92% | |||
| 1:51.6 | Snetterton Circuit (300) | Race | 14 Oct, 2022 | 01 Sep, 2024 | -1.07s | +0.83% | |||
| 1:29.3 | Sydney Motorsport Park (GP Circuit) | Race | 17 Jun, 2023 | 01 Feb, 2026 | -0.85s | +0.82% | |||
| 1:31.0 | Tor Poznan | Race | 05 Jul, 2021 | 05 Sep, 2022 | -0.71s | +0.68% | |||
| 1:51.2 | Watkins Glen International (Full Circuit w/ Loop) | Race | 12 May, 2017 | 18 Jan, 2026 | -0.67s | +0.52% | |||
| 2:03.1 | Circuit Paul Ricard (Circuit 1C-V2) | Race | 01 Oct, 2019 | 27 Jan, 2026 | -0.71s | +0.50% | |||
| 1:20.3 | Canadian Tire Motorsport Park-Mosport (Grand Prix Circuit) | Race | 16 Sep, 2016 | 18 Jan, 2026 | -0.42s | +0.45% | |||
| 1:30.7 | Donington Park Circuit (CW) | Race | 18 May, 2023 | 07 Mar, 2026 | -0.31s | +0.30% | |||
| 2:04.7 | Silverstone (GP) | Race | 16 May, 2018 | 07 Mar, 2026 | -0.37s | +0.26% | |||
| 1:37.1 | Highlands Motorsport Park (Full Couse CW) | Race | 01 Feb, 2018 | 21 Jan, 2026 | -0.2s | +0.18% | |||
| 44.9 | Collie Motorplex (Short) | Race | 06 Mar, 2021 | 02 Feb, 2024 | -0.08s | +0.17% | |||
| 1:32.0 | MSR Houston (CCW) | Race | 23 Dec, 2019 | 27 Aug, 2022 | +0.17s | -0.16% | |||
| 1:35.3 | Sonoma Raceway (Long Pre 2024) | Race | 08 Mar, 2022 | 02 Nov, 2024 | +0.18s | -0.17% | |||
| 1:28.0 | Dubai Autodrome International Circuit (National) | Race | 27 Nov, 2009 | 17 Jan, 2026 | +0.17s | -0.17% | |||
| 1:41.5 | MotorPark România (CCW) | Race | 17 Nov, 2021 | 09 Sep, 2022 | +0.25s | -0.22% | |||
| 2:26.7 | Spring Mountain Motor Resort (Fittipaldi D 3.6 Mile) | Race | 05 Jul, 2017 | 27 Dec, 2022 | +0.58s | -0.34% | |||
| 1:01.2 | Autobahn Country Club (North Circuit) | Race | 07 Sep, 2016 | 17 Jun, 2022 | +0.25s | -0.36% | |||
| 1:01.2 | Gateway Motorsports Park-World Wide Technology Raceway (Road Course 1 CCW) | Race | 02 May, 2021 | 10 Apr, 2022 | +0.26s | -0.37% | |||
| 1:25.5 | Spring Mountain Motor Resort (East 2.1 Mile) | Race | 13 Jun, 2020 | 02 Sep, 2021 | +0.43s | -0.44% | |||
| 1:39.4 | Silesia Ring | Race | 27 Nov, 2020 | 24 Jul, 2022 | +0.64s | -0.56% | |||
| 1:39.7 | Silesia Ring | Race | 08 Jun, 2018 | 14 Sep, 2021 | +0.94s | -0.81% | |||
| 1:39.0 | Heartland Motorsports Park (Grand Prix slow 8) | Race | 08 Jun, 2021 | 27 Aug, 2022 | +1.03s | -0.90% | |||
| 1:53.4 New | Snetterton Circuit (300) | Race | 19 May, 2026 | 27 May, 2026 | — | ||||
| 1:53.4 | Clark International Speedway | Race | 04 Sep, 2020 | 09 Aug, 2022 | +1.65s | -1.25% | |||
| 1:16.0 | Mantorp Park | Race | 07 May, 2017 | 26 Apr, 2022 | +1.24s | -1.40% | |||
| 1:50.9 | Ningbo International Circuit | Race | 20 Feb, 2023 | 18 Jan, 2026 | +1.82s | -1.41% | |||
| 1:21.8 | Canadian Tire Motorsport Park-Mosport (Grand Prix Circuit) | Race | 06 Sep, 2016 | 18 Jan, 2026 | +1.68s | -1.76% | |||
| 1:05.4 | Dubai Autodrome International Circuit (Club) | Race | 02 Oct, 2018 | 23 Jan, 2026 | +1.5s | -1.98% | |||
| 1:05.0 | Gelleråsen Arena | Race | 22 Aug, 2021 | 23 Jan, 2026 | +1.51s | -2.00% | |||
| 1:31.5 | Sydney Motorsport Park (GP Circuit) | Race | 13 Nov, 2019 | 27 Feb, 2026 | +2.17s | -2.02% | |||
| 2:17.2 | Spring Mountain Motor Resort (Clark 3.2 Mile) | Race | 17 Mar, 2018 | 02 Sep, 2021 | +3.34s | -2.09% | |||
| 2:23.2 | Autobahn Country Club (Full Circuit) | Race | 19 Jun, 2016 | 18 Jan, 2026 | +3.54s | -2.12% | |||
| 1:38.0 | Circuito del Jarama | Race | 07 Mar, 2017 | 21 Jul, 2022 | +2.47s | -2.16% | |||
| 1:11.8 | Motorsport Ranch-MSR Cresson (1.7 CCW) | Race | 26 Apr, 2020 | 18 Aug, 2022 | +1.84s | -2.20% | |||
| 1:04.9 New | Bushy Park (International) | Race | 13 Jun, 2026 | 13 Jun, 2026 | +1.82s | -2.41% | |||
| 1:52.0 | Eagles Canyon Raceway (2.7 miles CCW) | Race | 04 Dec, 2023 | 06 Jul, 2024 | +3.16s | -2.42% | |||
| 1:41.2 | Silesia Ring | Race | 09 Nov, 2018 | 24 Jul, 2022 | +3.04s | -2.58% | |||
| 2:07.0 | Kuwait Motor Town (GP) | Race | 08 Dec, 2019 | 29 Nov, 2023 | +3.85s | -2.60% | |||
| 1:42.7 | NOLA Motorsports Park | Race | 22 Nov, 2015 | 17 Jan, 2026 | +3.12s | -2.60% | |||
| 1:52.6 | Virginia International Raceway - VIR (Full Course) | Race | 04 Jun, 2017 | 18 Jan, 2026 | +3.77s | -2.87% | |||
| 1:10.7 | Roebling Road Raceway (Road Course) | Race | 05 Jun, 2020 | 16 Jun, 2022 | +2.41s | -2.92% | |||
| 1:33.2 | Donington Park Circuit (CW) | Race | 23 Sep, 2020 | 24 Jul, 2022 | +3.21s | -2.95% | |||
| 1:23.0 | Canadian Tire Motorsport Park-Mosport (Grand Prix Circuit) | Race | 30 Jul, 2016 | 18 Jan, 2026 | +3.24s | -3.34% | |||
| 2:17.9 | Monticello Motor Club (Full Course) | Race | 26 Aug, 2012 | 13 Jan, 2026 | +5.72s | -3.55% | |||
| 1:10.8 | Collie Motorplex (Long) | Race | 07 Mar, 2021 | 01 Feb, 2024 | +3.1s | -3.75% | |||
| 1:42.4 | Silesia Ring | Race | 14 Oct, 2019 | 24 Jul, 2022 | +4.72s | -3.94% | |||
| 1:22.9 | Heartland Motorsports Park (Nascar A CCW) | Race | 23 May, 2021 | 27 Aug, 2022 | +3.99s | -4.11% | |||
| 1:17.0 | Thunderhill (West) | Race | 16 Oct, 2021 | 15 Apr, 2022 | +3.94s | -4.38% | |||
| 1:16.1 | Hallett Motor Racing Circuit (CCW) | Race | 08 Apr, 2018 | 14 Sep, 2022 | +3.97s | -4.45% | |||
| 1:35.5 | MSR Houston (CCW) | Race | 23 Dec, 2019 | 27 Aug, 2022 | +5.01s | -4.48% | |||
| 49.0 | Brands Hatch Circuit (Indy Circuit CW) | Race | 15 Sep, 2017 | 23 Jan, 2026 | +2.69s | -4.82% | |||
| 3:22.6 | The Bend Motorsport Park (GT Circuit) | Race | 04 Sep, 2019 | 09 Apr, 2022 | +11.63s | -4.90% | |||
| 1:30.7 | Laguna Seca (Pre 2023) | Race | 16 Jul, 2018 | 14 Jan, 2026 | +5.99s | -5.59% | |||
| 1:30.9 | Laguna Seca (Pre 2023) | Race | 17 Jan, 2022 | 16 Nov, 2024 | +6.19s | -5.77% | |||
| 1:13.1 | Roebling Road Raceway (Road Course) | Race | 18 Aug, 2019 | 15 Aug, 2022 | +5.44s | -6.35% | |||
| 1:54.4 | Autodromo Nazionale di Monza | Race | 01 Oct, 2017 | 18 Jan, 2026 | — | ||||
| 1:48.4 | Texas World Speedway (2.9 Mile CCW) | Race | 24 Apr, 2016 | 18 Jan, 2026 | — | ||||
| 1:37.6 | Tor Poznan | Race | 30 Sep, 2019 | 06 Sep, 2022 | — | ||||
| 1:15.4 | Roebling Road Raceway (Road Course) | Race | 03 May, 2018 | 15 Aug, 2022 | — | ||||
| 1:46.6 | Le Mans (Bugatti) | Race | 03 Jul, 2017 | 23 Jan, 2026 | +11.9s | -9.47% | |||
| 1:20.2 | Roebling Road Raceway (w/Chicane) | Race | 09 Apr, 2025 | 18 May, 2025 | +9.22s | -9.83% | |||
| 1:41.3 | MSR Houston (CCW) | Race | 26 Jan, 2016 | 27 Aug, 2022 | +13.07s | -10.90% | |||
| 1:37.6 | Motorsport Arena Oschersleben | Race | 08 Sep, 2025 | 21 Sep, 2025 | +13.12s | -11.37% | |||
| 2:10.7 | Dubai Autodrome International Circuit (GP Circuit) | Race | 26 Apr, 2019 | 23 Jan, 2026 | +17.96s | -11.60% | |||
| 1:20.2 | Korea International Circuit-Yeongam (National Circuit) | Race | 08 Aug, 2016 | 27 Oct, 2021 | +11.47s | -11.92% | |||
| 2:30.2 | Monticello Motor Club (Full Course) | Race | 03 Jul, 2022 | 06 Oct, 2024 | +22.71s | -12.75% | |||
| 1:37.6 | Oulton Park (Island) | Race | 01 Apr, 2019 | 02 Sep, 2021 | +17.04s | -14.66% |
Top Modified SR3 RSX
| Year | Driver Name | Mod | Horsepower | Tire | Tire Size | Vs Predict |
|---|---|---|---|---|---|---|
| 2018 (w/VentusTD) | Mike Jenvey | Race | — | 80 Ventus TD | 215/45/17 | -22.11s |
| 2020 | Ahmad Almousherji | Race | — | — | — | -21.17s |
| 2018 (w/VentusTD) | Emil Nestor | Race | — | 80 Ventus TD | 215/45/17 | -21.09s |
| 2018 | Mateo Villagomez | Race | — | — | — | -19.99s |
| 2015 (JamesWinslow/ Race) | James Winslow | Race | 210 | 80 Ventus TD | 215/45/17 | -19.68s |
| 2020 (w/VentusTD) | Filip Svensson | Race | — | 80 Ventus TD | 215/45/17 | -19.48s |
| 2017 (w/VentusTD) | Wyatt Foster | Race | 222 | 80 Ventus TD | 215/45/17 | -19.37s |
| 2017 (w/VentusTD) | Benjamín Hites | Race | 210 | 80 Ventus TD | 215/45/17 | -19.08s |
| 2016 | Stiglet Racing | Race | — | 40 Ventus F200 | 215/45/17 | -18.88s |
| 2017 (w/VentusTD) | Jani Hjerppe | Race | 210 | 80 Ventus TD | 215/45/17 | -18.87s |