JRM GT23 revealed – a road-legal Nissan GT-R GT3 racer

British racing outfit JRM to build 23 road-legal GT-R GT3 racing cars

JR Motorsport (JRM) has revealed a road-legal version of its GT3 racing car for private customers called the GT23. While the term ‘road-legal racing car’ is one often thrown around when the carpets have been removed in a run of the mill performance car, the GT23 is no mere marketing exercise, but genuinely a competition car with number plates and headlights.

Twenty three units will be built at JRM’s Daventry production facility, each with the same basic chassis, powertrain and body as the GT3 car. This includes a structural change to the engine’s placement in the chassis, sitting lower and further back than in the road-going GT-R. This is due to the switch to rear-wheel drive, removing the second driveshaft and under-engine differential that push the road-going GT-R’s engine upwards. 

The twin-turbocharged 3.8-litre V6 engine is also derived from the racer, rather than the road car, but does without any power restrictions. Peak power is rated at 675bhp, with the option to raise it to up to 750bhp. The target kerb weight is quoted at 1350kg, giving the GT23 a 500bhp/ton power-to-weight ratio. Internals have been redesigned to be more durable than a GT3 racer too, with new pistons, conrods, camshafts and turbos – reducing the frequency of costly rebuilds. 

The transmission attached to the engine is also derived from competition, a pneumatic six-speed sequential transmission, again modified specifically for the GT23. With the new placement of its engine, the front subframe and suspension have also been derived from the GT3 racer, but features completely new geometry and kinematics, as well as bespoke springs and dampers.

There are two wheel options available, both featuring centre-lock wheel hubs, in an 18-inch aluminium size that can be fitted with racing slicks, and a larger set of 20-inch carbonfibre wheels for use with road tyres. The brakes are also new, and have been sourced from AP Racing, utilising six-piston calipers gripping 380mm discs on the front axle and four-piston units on 355mm discs on the rear. 

Little concession has been made to civility in the cabin, with no more than a skin of Alcantara wrapped around the caged and stripped out interior. There will be multiple drive modes accessible via a digital instrument cluster, but the standard GT-R’s comparatively luxurious cabin is otherwise entirely removed.

Outside, the GT3 car’s composite bodywork, polycarbonate side windows, carbon groundwork and huge competition-specification rear wing complete the package.

No specific pricing has been established by JRM as yet, but the first prototype has been completed and viewings for prospective customers are now able to be booked at JRM’s Daventry-based headquarters. 

Recommended

Nissan Ariya Single Seater Concept revealed
Nissan Ariya Single Seater Concept – nose
Nissan

Nissan Ariya Single Seater Concept revealed

Keen to push how diverse Nissan’s electric motors can be, it’s revealed a concept that’s half Ariya half Formula E racer
2 Dec 2021
WEC’s Le Mans Hypercar and LMDh contenders in full
Porsche LMDh
racing

WEC’s Le Mans Hypercar and LMDh contenders in full

WEC’s rebirth starts now. These are the cars you’ll see racing for Le Mans glory over the next few seasons
7 Oct 2021
FIA and Formula 1 to develop sustainable fuel for use by 2025
F1 2020 testing2
racing

FIA and Formula 1 to develop sustainable fuel for use by 2025

New targets have been set to develop and utilise low-carbon synthetic fuels to reduce the sport’s carbon footprint
6 Oct 2021
That time we hit 227mph in a Skoda Octavia
Skoda Octavia at Bonneville – profile
Skoda

That time we hit 227mph in a Skoda Octavia

It’s been 10 years since Dickie Meaden and Skoda smashed the G/PS top speed record at the Bonneville Salt flats, we reminisce...
19 Aug 2021

Most Popular

Aston Martin V12 Vantage officially coming in 2022
V12 Vantage teaser
Aston Martin Vantage

Aston Martin V12 Vantage officially coming in 2022

Aston Martin’s dreamy small body/big engine combo is back, a new V12 Vantage is coming next year
1 Dec 2021
Car pictures of the week
Tolman Peugeot 205 GTI
Peugeot 205 GTi hatchback

Car pictures of the week

In this week’s car pictures from issue 292, we look at the highlights from Adam Towler’s drive in the Tolman Peugeot 205 GTI
3 Dec 2021
Morgan shows off new 3 Wheeler in designer sketches
Morgan 3 Wheeler prototype 1
Morgan 3 Wheeler

Morgan shows off new 3 Wheeler in designer sketches

Morgan's given us a look ahead at its new 3 Wheeler
2 Dec 2021