Judd Power

What Judd Power does

Judd Power is the trading brand of Engine Developments Ltd, an independent UK-based engineering company founded in 1971 by John Judd Sr and Sir Jack Brabham in Rugby, United Kingdom. The company designs, develops, manufactures, and services high-performance racing engines — primarily proprietary V8 (DB series 3.0L to 4.4L; HK V8 LMP2 based on the BMW S65) and V10 (GV series at 4.0L, 4.2L, 5.0L, and 5.5L) platforms — producing up to 800+ bhp for applications including Le Mans, the FIA World Endurance Championship, Asian and European Le Mans Series, Boss GP, hillclimb, GT, and historic racing. Technical capability spans clean-sheet CAD design (Solidworks, EdgeCam), FEA-driven analysis, in-house CNC manufacturing including Matsuura 5-axis machining, and engine testing on three dynamometers capable of handling engines up to 800 hp.

Beyond complete engine supply, Judd Power sells engineering services to motorsport teams and automotive OEMs: component design, engine development and testing, assembly and rebuild (including for Cosworth DFV/DFR, Renault F1 V10, Ferrari V12, Porsche, Nissan VK45), reverse engineering of historic or obsolete components, manufacturing of small-batch parts (crankshafts, pistons, cylinder heads), and consultancy across adjacent industries. Pricing is not publicly disclosed; all commercial activity is direct B2B engagement with racing teams and OEMs, supported by trackside engineering presence at events including Le Mans, Asian Le Mans, WEC, and Boss GP.

Judd's commercial reach is global, with engines and services delivered across the UK, continental Europe, Japan, China, Malaysia, Thailand, and the United States. The company employs approximately 25 people (per company materials), operates from a single facility in Rugby, and is currently led by the second generation of the founding Judd family. There is no disclosed external institutional investment, parent company, or public listing. Recent commercial momentum is anchored by premium co-development partnerships with McLaren (Solus GT 5.2L V10), JAS Motorsport and Pininfarina (Tensei supercar engine program), and AIM Co. Ltd (LMP1 V10), alongside ongoing capacity expansion through additional CNC machining installations.

Name

Judd Power

Legal name

Engine Developments Ltd

Website

https://juddpower.com

Company type

Private

Founded year

1971

Operating status

Operating

Headcount range

51–100 employees

Short description

Judd Power (Engine Developments Ltd) is an independent UK engineering firm that designs, manufactures, and services proprietary V8 and V10 high-performance racing engines. It serves motorsport teams and automotive OEMs worldwide with complete engine platforms plus bespoke design, testing, and manufacturing services.

Ownership category

akta.pro rank

Product category

Motorsport Engine Manufacturing

NAICS

Motor Vehicle Gasoline Engine and Engine Parts Manufacturing (33631), Motor Vehicle Gasoline Engine and Engine Parts Manufacturing (336310)

SIC

Engines & Turbines (3510), Motor Vehicle Parts & Accessories (3714)

akta.pro primary industry

Internal Combustion Engine (ICE) Manufacturing (Gasoline/Diesel) (IMACAHAA)

akta.pro secondary industry

Engine Components & Subsystems Manufacturing (Blocks/Heads/Valvetrain/Pistons) (IMACAHAB)

Keywords

• Racing engine manufacturing
• High performance engines
• Motorsport engineering services
• Engine design services
• V10 V8 engines

Headquarters

HQ city

Rugby

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Racing Engine Sales: Design, manufacture and sale of complete high performance racing engines including Judd V8 and V10 engine families for motorsport applications including LMP1, LMP2, GT, Boss GP, and historic racing.
2. Engine Rebuild and Servicing: Rebuild, service and update racing engines including Cosworth DFV/DFR, Renault F1 V10, Ferrari V12, Porsche, Nissan VK45, Judd/Zytek KV V8, and high-speed F1 engines. Comprehensive lifing system for component mileage tracking.
3. Component Manufacturing: Manufacture of individual engine components including crankshafts, pistons, cylinder heads, cylinder blocks, camshafts, and castings. Small batch production capabilities for racing and other high-performance applications.
4. Engine Development and Testing Services: In-house engine development and testing including performance optimization, friction reduction, breathing capacity improvements, ECU installation, drive-by-wire throttle systems, and durability testing on dynamometers.
5. Reverse Engineering: Reverse engineering services for engine components including material analysis, design modification, tooling development, casting procurement, and race-proven part manufacturing for irreplaceable or unavailable components.
6. Engineering Consultancy: Consultant engineering services to various industries including aircraft diesel engine development, seal testing rig design, crankshaft design/analysis, and bespoke component design. Works independently or as part of customer teams.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

Engine Developments Ltd (trading as Judd Power) designs, develops, manufactures and services high-performance Judd V8 and V10 racing engines (3.0L to 5.5L displacements) for motorsport applications including Formula 1, LMP1, LMP2, Boss GP, GT, touring car, and historic racing. The company also provides complete engine design, analysis, CNC manufacturing, dynamometer testing, rebuild/servicing, reverse engineering, and on-site race engineering support as an integrated one-stop-shop for racing teams and automotive OEMs.

Product overview

Judd Power is a specialized high-performance racing engine company operated by Engine Developments Ltd. The product portfolio centers on proprietary Judd V8 and V10 racing engines (DB V8, KV V8 F3000, HK V8 LMP2, GV V10 series) complemented by comprehensive engineering services including design, development, testing, manufacturing, assembly, customer support, and reverse engineering. The engines range from 3.0L to 5.5L displacements and power applications including Formula 1, LMP1, LMP2, Boss GP, GT, touring cars, and hillclimb vehicles. The company operates an in-house machine shop with CNC and 5-axis capabilities and provides both factory and on-site technical support to racing teams.

Differentiator

Problem solved

Functional benefit

Products and services

• Judd DB 3.0, 3.4, 4.0 & 4.4L V8 Engines Race-winning Le Mans series, single seater, and hillclimb V8 engines available in 3.0 to 4.4 litre displacements, producing up to 670 BHP at 10,000 RPM. Features include twin water pumps, 3-plate carbon clutch, and compatibility with Motec/Life Racing ECUs.
• Judd KV (Zytek) V8 F3000 Engine 3 litre V8 engine designed for the FIA F3000 championship (1996-2004). Engine was supplied in kit form to Zytek for build and servicing. Supports upgrades to 520 BHP with modern ECU and cylinder head improvements.
• Judd HK V8 LMP2 Engine 3.6 litre LMP2 racing engine based on BMW S65 4.0 litre V8, producing approximately 500 BHP with mandatory FIA/ACO restrictor. Powers cars in Le Mans 24 Hours, World Endurance Championship, and Asian/Le Mans series. No longer available for new sale.
• Judd GV 4.2L V10 Engine Championship-winning Boss GP single seater V10 engine with 4200 CC displacement. Features 72 degree configuration, 135 kg weight, over 750 BHP unrestricted, and 11,000 RPM maximum. Updated lighter cylinder heads and twin barrel throttles.
• Judd GV 5.0 & 5.5L V10 Engines Dominant LMP1 petrol engines from 2004-2012 producing up to 800 BHP. Available in 5000 and 5500 CC configurations with 72 degree V10 DOHC layout, 140 kg weight, and 9,000 RPM limit. Popular choice for historic sportscar racing.
• Judd GV 4L V10 Engine Benchmark LMP1 customer engine debuting in 1999, powering Doran Racing to 2002 Daytona 24 Hours victory. Produces up to 750 HP unrestricted. Now popular for historic Formula 1 cars and sportscar series. Production restarted for historic sportscar series.
• GT and Touring Car Engines Extensive GT and touring car engine development services including collaboration with OEMs. Past achievements include Nissan BTCC championships, MG K-series racing engine development, and BMW M62 V8 championship-winning powerplant.
• Engine & Component Design Services Complete engine design from concept using Solidworks CAD and FEA software, through prototype manufacture with Edgecam 3D CAD/CAM, testing on dynos, and full production support. Expertise in crankshafts, pistons, valvetrains, camshafts, and castings.
• Engine Development & Testing Services In-house engine development and testing with focus on friction reduction and increased breathing capacity. Three dynos available (up to 800 HP), data logging, in-cylinder pressure measurement, and crankshaft/camshaft torsional analysis capabilities.
• Engine Assembly & Rebuilding Services Engine rebuilding and servicing for Judd engines and other manufacturers including Cosworth DFV/DFR, Renault F1 V10, Ferrari V12, Porsche 6 cylinder, Nissan VK45 V8, and high-speed F1 engines. Includes cleaning, crack test, metrology, and component mileage tracking.
• Manufacturing Services On-site machine shop with CNC lathes, OKK/Haas vertical and horizontal mills, Matsuura 5-axis, Takisawa piston lathe, Mitsubishi wire eroder, and grinding equipment. Capable of complete engines or individual components in small batches.
• Customer Support Services Comprehensive support from factory-based telephone/email to on-site race and test engineering assistance. Includes data analysis, installation guidance, and operation support with installation manuals available for post-2000 engines.
• Consultancy Services Engineering consultancy services including diesel aircraft engine development assistance, seal testing rig design, crankshaft design and analysis, bespoke component design, and reverse engineering of components.
• Reverse Engineering Services Reverse engineering of engine components and mechanical parts using extensive material knowledge (steel, aluminium, beryllium copper, brass, copper) and heat treatment expertise. Includes failure analysis and race-proven component recreation.
• Judd DB4 GP2 Engine 4 litre V8 engine producing 670 BHP at 10,500 RPM, featuring Formula 1 derived barrel throttles and drive-by-wire technology. Designed for GP2 chassis applications in collaboration with Mansell Motorsport for Dallara chassis integration.

Quantifiable outcome

• Victory at 2002 Daytona 24 Hours
• +4 more outcomes

Named customers20 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration18 records

Feature6 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• JAS MotorsportcoreStrategic or Co-development Partner · 2 March 2026JAS Motorsport appointed Judd Power as engine partner for the Pininfarina-designed Tensei supercar. Judd Power is responsible for suitability checks, lightening and enhancements of Honda NSX 3.5L V6 engines at its Rugby facility, with dynamometer testing for performance verification and calibration.
• McLarencoreStrategic or Co-development Partner · 27 June 2024Collaboration on 5.2L V10 engine for McLaren Solus GT track hypercar. Judd-built V10 produces 829bhp (858bhp with ram air), revs to 10,000rpm, and is a stressed part of the chassis. The Solus GT won the 2023 Goodwood Festival of Speed Shootout.
• AIM Co. LtdcoreStrategic or Co-development Partner · 13 October 2017Long-standing collaboration between Engine Developments Ltd and AIM Co. Ltd of Japan for LMP1 engine programs. Joint development of AIM-JUDD V10 engines for privateer teams in FIA WEC. Partnership spans multiple years with new 5.5L V10 development announced for 2018/19 Super Season.
• Zele RacingminorChannel Partner/ Reseller/ DistributorZele Racing completed expert engine installation and car preparation for Judd GV 4.2 V10 powered ChampCar debut at Assen Gamma Racing event in August 2015.
• Mansell MotorsportminorChannel Partner/ Reseller/ DistributorMansell Motorsport collaborated with Judd Power on GP2 chassis installation kit design and manufacturing for Judd DB4 engine integration with Dallara chassis.
• PininfarinaminorStrategic or Co-development PartnerItalian design house Pininfarina designed the Tensei supercar for which Judd Power develops engines in partnership with JAS Motorsport.
• SolidsolutionsminorOthersSolidworks CAD software supplier that challenged Judd Power to 3D print face shields during COVID-19 pandemic. Judd used Markforged 3D printer to produce headbands and visor supports for NHS.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Mecachrome: French-based specialist engine manufacturer and supplier of Formula 1 power units and high-performance racing engines. Comparable to Judd Power as a boutique supplier of bespoke motorsport engines with strong F1 heritage.
• Ilmor Engineering: UK/US motorsport engineering company producing IndyCar, NASCAR Cup, and marine high-performance engines. Comparable to Judd Power as an independent boutique engine designer and manufacturer serving top-tier racing series and OEM programs.
• Cosworth: Long-established UK-based independent engine designer and manufacturer serving F1, IndyCar, NASCAR, and sportscar racing. The most direct comparable to Judd Power, overlapping on historic F1 engine rebuilds, LMP engine programs and customer-team field support.
• AER (Advanced Engine Research): UK-based independent engine developer specializing in V8 and turbocharged motorsport engines for LMP and GT categories. Directly competes with Judd in the endurance/privateer LMP engine space.
• Gibson Technology: UK-based spec LMP engine supplier for the FIA WEC and European Le Mans Series. Competes directly with Judd's discontinued HK V8 LMP2 platform and is the benchmark spec supplier in the segment Judd historically served.

Regional players

• Riley Technologies: US-based motorsport engineering firm developing LMP, GT and prototype race cars. Similar profile to Judd as a boutique engineering house serving privateer endurance racers, though geographically focused on IMSA/American racing series.

Emerging players

• Multimatic Motorsports: Canadian motorsport engineering and vehicle manufacturer building turnkey race cars (e.g., Mustang GT3) and providing engineering services to OEMs. Comparable to Judd on bespoke motorsport engineering and as a partner to niche supercar and race programs.

Others

• Xtrac: UK-based designer and manufacturer of high-performance transmissions and driveline components for motorsport. An adjacent enabling supplier in the same motorsport engineering ecosystem as Judd, often integrated into the same customer racing programs.

Broad incumbents

• Honda Performance Development (HPD): The North American motorsport arm of Honda, supplying engines across IndyCar, IMSA, and off-road racing. Overlaps with Judd's racing engine manufacturing activity but operates as a broader OEM-backed incumbent rather than an independent boutique.
• Renault Sport Racing: Historic racing-engine development unit of Renault, supplying F1 power units and customer engines to multiple teams. Comparable capability to Judd in F1-era V10 engine rebuilds and modern supply relationships, but with far greater scale and OEM backing.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/JuddPower
• Facebookfacebook.com/Engine-Developments-JUDD-Power-535103669951756/?ref=aymt_homepage

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Judd Power