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S1 LM
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  Gordon Murray Automotive S1 LM      

  Article Image gallery (55) 1 Specifications  
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Country of origin:Great Britain
Produced in:2026
Numbers built:5 (Limited)
Introduced at:2025 The Quail, a Motorsports Gathering
Internal name:T.55
Source:Company press release
Last updated:August 18, 2025
Download: All images

Engine
Configuration Cosworth / GMA 65º V12
Location Mid, longitudinally mounted
Weight 178 kilo / 392.4 lbs
Construction aluminium alloy block and head
Displacement 4,300 cc / 262.4 cu in
Bore / Stroke 84.0 mm (3.3 in) / 63.8 mm (2.5 in)
Compression 14.0:1
Valvetrain 4 valves / cylinder, DOHC
Camshaft Gear driven
Fuel feed Direct Fuel Injection
Lubrication Dry sump
Aspiration Naturally Aspirated
Power 720 bhp / 537 kW @ 11,500 rpm
Torque 470 Nm / 347 ft lbs @ 9,000 rpm
Red Line 12,100 rpm
BHP/Liter 167 bhp / liter

Drivetrain
Body carbon-fibre composite
Chassis carbon-fibre monocoque with semi-stressed engine
Suspension (fr/r) double wishbones, push-rod actuated rising rate springs and dampers, anti-roll bar
Steering rack-and-pinion
Front Brakes ventilated carbon ceramic discs, 370mm (14.6 in), 6-pot caliper
Rear brakes ventilated carbon ceramic discs, 340mm (13.4 in), 4-pot caliper
Gearbox 6 speed Manual
Gear ratios 2.833:1
2.095:1
1.577:1
1.226:1
0.971:1
0.744:1
Final drive 3.18:1
Drive Rear wheel drive

Dimensions
Weight 986 kilo / 2,174 lbs
Length / Width / Height 4,443 mm (174.9 in) / 1,891 mm (74.4 in) / 1,149 mm (45.2 in)
Wheelbase / Track (fr/r) 2,700 mm (106.3 in) / 1,637 mm (64.4 in) / 1,572 mm (61.9 in)
Fuel tank 80 Litre (21.1 Gallon US / 17.6 Gallon Imperial)
Wheels (fr/r) 10 x 19 / 12 x 20
Tyres (fr/r) Michelin Pilot Sport Cup 2 265/35 – ZR19 / 335/30 – ZR20

Performance figures
Power to weight 0.73 bhp / kg

Auctions
Past sales

Resources
Useful links

  Article Image gallery (55) 1 Specifications