What Harrop Engineering does

Harrop Engineering is an Australian precision-engineered automotive performance parts manufacturer and master distributor of Eaton supercharger and traction products, founded in 1955 in Brunswick, Victoria and headquartered in Preston, VIC. The company's core product portfolio spans positive-displacement TVS superchargers (TVS900 through TVS2650, including FDFI Front Drive Front Inlet systems and H2650i LSA Race Port upgrades), driveline differentials (Harrop Truetrac helical gear, ELocker selectable locking, Detroit Locker, Spools), the Ultimate Big Brake Kit line, Hurricane inlet manifolds for LS platforms, cooling systems, exhaust components, Tremec short shifters, and Forgeline forged wheels. Underlying technology is anchored by an in-house casting capability — Harrop Casting Technologies in Adelaide provides ISO9001:2015-accredited non-ferrous aluminium, brass, copper, and magnesium castings using gravity die, sand, core-blowing, and shell-core methods plus in-house T6 heat treatment and shot-peening — supporting rapid prototyping and OEM-grade production.

The company operates a multi-channel go-to-market: direct-to-consumer e-commerce at harrop.com.au with a vehicle selector covering 40+ makes, an in-house installation and service workshop (Harrop Performance Centre), a 500+ authorized dealer network spanning all Australian states and 15+ international markets (USA, NZ, UK, UAE, China, India, Saudi Arabia, Qatar, France, South Africa, Russia, Jordan, PNG, Fiji), and wholly-owned Harrop USA (Dayton, OH, est. 2019) for direct US distribution. Sub-brands include BTR (Brian Tooley Racing) for valvetrain components and #TeamHarrop for enthusiast merchandise. Revenue streams combine one-time hardware sales of built-to-order supercharger kits (AUD $8,600–$11,785+ flagship ASPs) and differentials, professional installation and warranty services through HPC, dealer-channel hardware sales, OE supply programs (Ford/FPV, Lotus, HSV, Toyota Australia/TRD Aurion — world-first Eaton TVS OEM program), and industrial casting services to marine, military, aviation, and general manufacturing customers. Customer segments fall into four primary buckets: performance enthusiasts/aftermarket, 4x4/off-road enthusiasts, automotive OEM manufacturers, and motorsport teams, with a secondary segment in industrial/non-automotive manufacturing via the casting division.

Name

Harrop Engineering

Legal name

Harrop Engineering Australia Pty Ltd

Website

https://harrop.com.au

Company type

Private

Founded year

1955

Operating status

Operating

Headcount range

11–50 employees

Short description

Harrop Engineering is a 70-year-old Australian precision-engineered automotive performance parts manufacturer serving performance enthusiasts, 4x4 owners, OEMs, and motorsport teams globally through 500+ dealers, direct e-commerce, and the Harrop Performance Centre. Core products include Eaton TVS superchargers, differentials, brake kits, and in-house non-ferrous castings.

Ownership category

akta.pro rank

Product category

Automotive Performance Parts

NAICS

Automotive Parts and Accessories Retailers (441330), Motor Vehicle Gasoline Engine and Engine Parts Manufacturing (336310)

SIC

Motor Vehicle Parts & Accessories (3714)

akta.pro primary industry

Aftermarket Performance & Tuning Products Manufacturing (Intakes/Turbos/ECU Tuners/Superchargers) (IMACANAN)

akta.pro secondary industries

Aftermarket Exhaust & Emissions Components Manufacturing (Mufflers/Catalysts/DPF/EGR) (IMACANAE), Automotive Parts & Accessories Online Retailers (CRAFADAK)

Keywords

• Automotive performance parts
• Supercharger kits
• Locking differentials
• Performance brake systems
• Aftermarket driveline components

Headquarters

HQ city

Preston

HQ country

Australia

HQ region

Oceania

Offices6 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Performance Parts Sales: Harrop generates the majority of its revenue through direct sales of manufactured performance automotive parts including supercharger kits, differentials, brake kits, inlet manifolds, and engine components through its e-commerce platform and dealer network. Products are sold as one-time purchases with varying warranty periods (12-36 months depending on product category).
2. Aftermarket Installation and Service: Harrop Performance Centre (HPC) at Preston HQ provides installation and repair services for superchargers and differentials. Warranty repairs are offered through the workshop. Supercharger and differential repairs carry a 30-day limited warranty.
3. Dealer Network Sales: Revenue flows through an authorized dealer network across Australia and internationally. Dealers purchase products from Harrop and resell to end consumers, creating a distribution revenue channel.
4. Harrop Casting Technologies - Industrial/Non-Automotive: Harrop's casting division (Harrop Casting Technologies, based in Adelaide) produces aluminium, brass, copper and magnesium castings for marine, military, industrial, aviation, and manufacturing industries, diversifying revenue beyond automotive.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels8 records

Core offering

Harrop Engineering designs, manufactures, and distributes precision-engineered automotive performance parts — primarily Eaton TVS-based supercharger kits, Truetrac and ELocker differentials, and Ultimate Big Brake Kits — for OEM, motorsport, and aftermarket customers. Products are sold through harrop.com.au, the Harrop Performance Centre workshop in Preston, and a 500+ authorized dealer network across Australia and 15+ international markets.

Product overview

Harrop Engineering is an Australian manufacturer of precision-engineered automotive performance parts serving OEM, motorsport and aftermarket customers globally since 1955. The product portfolio centers around supercharger systems (TVS900 through TVS2650 ranges including FDFI, H2650i LSA, and application-specific kits for Ford Mustang GT, Toyota Tundra, Holden/HSV, Small Block Chev, Jeep SRT, and RAM 1500), driveline components (Harrop Truetrac helical differentials, Harrop ELocker selectable lockers, Detroit Locker, and Spools), and braking systems (Ultimate Big Brake Kits, Toyota 86/BRZ upgrades). Supporting product lines include Hurricane Intake Manifolds, engine oil coolers, intercoolers, cold air intakes, fuel systems, exhaust systems, Tremec short shifters, and Forgeline wheels. The company operates sub-brands including BTR (Brian Tooley Racing) for valvetrain components and Harrop Casting Technologies for non-ferrous casting services. Harrop also offers vehicle-specific performance systems and installation services through Harrop Performance Centre.

Differentiator

Problem solved

Functional benefit

Brands

• Harrop Casting Technologies: Specialises in non-ferrous castings including aluminium, brass, copper and magnesium products. Based in Adelaide, ISO9001:2015 quality accredited.
• BTR - Brian Tooley Racing
• Team Harrop

Products and services

• TVS Supercharger Systems (TVS900 through TVS2650 range) Complete Eaton TVS positive displacement supercharger kits engineered and manufactured by Harrop for platforms including GM LS/LT/LSA, Ford Coyote 5.0L, Ford 7.3L Godzilla, Toyota 3UR/2UR, Nissan VK56, BMW S65, Mini R53, HEMI 5.7L, Subaru FA20, Holden 5.0L, and Small Block Chev. Each kit integrates manifold, intercooler, drive system, cold air induction, and ECU recalibration. Delivers 40–60% power gains; TVS2650 proven 1200+ HP capable with optional CNC ported variant achieving 1500+ HP.
• H2650i LSA Race Port Supercharger Direct replacement supercharger for factory LSA1900, incorporating TVS2650 rotating group with 1200+ HP capability while retaining factory appearance. Retains factory LSA lid, fuel rails, and sensors. Designed for HSV Gen-F LSA platforms with Stage 1–3 progressive packages.
• FDFI Supercharger Systems Front Drive Front Inlet supercharger design featuring twin-pass intercooler cores integrated into the manifold, mated to front-mount radiators and high-flow Bosch intercooler pumps for late model LS engine family. Provides superior thermal and volumetric efficiency.
• Harrop Hurricane Intake Manifold High-performance inlet manifold for GM LS3 and LS7 head combinations featuring individual throttle bodies for precise airflow control. Used in racing applications including Australian Production Car Series and various drag/race builds including the Harrop 427 Monaro with 700HP NA LS engine.
• Harrop Truetrac Differential Helical gear differential that performs like an open differential under normal conditions and automatically transfers torque to the wheel with the highest traction. Can transfer up to 3.5x more torque to the high-traction wheel. Maintenance-free with no friction modifiers required; lifetime torque bias retention.
• Harrop ELocker Selectable Locking Differential Electronically-actuated selectable locking differential that distributes 100% of available torque to each axle when engaged via a cabin switch. Manufactured in partnership with Eaton. Used in motorsport and serious 4x4 applications for maximum traction.
• Detroit Locker Differential Traditional locking differential solution distributed in Australia through Harrop's driveline product range under Eaton partnership.
• Harrop Ultimate Big Brake Kit High-performance brake system kits featuring multi-piston calipers (6-piston 381mm front and 4-piston 356mm rear configurations), large diameter rotors up to 381mm, lightweight aluminium disc adaptors, and braided stainless brake lines. Available in Titanium finish with Ferodo DS3000/DS2500 pads. Designed for track and high-performance street use.
• Toyota 86 / Subaru BRZ Front Brake Upgrade 2-piece front rotor upgrade for Toyota 86 and Subaru BRZ platforms increasing rotor diameter from 276mm to 345mm, with 4-piston alloy caliper, 36 directional vanes, and 12 slots per face.
• Engine Oil Cooler Kit 32mm multi-pass Setrab oil cooler with Harrop-designed high-flow adaptor block and thermostatic valve, increasing total oil volume by approximately 800ml.
• Intercoolers Front mount intercooler cores and systems for supercharger applications featuring high-density fin technology.
• Tremec Short Shifters Precision-engineered gear shifters for improved shift speed and feel in Tremec transmission applications.
• Cold Air Intakes Air intake systems including OTR Intakes and Cold Air Intakes with high-flow air filters for improved engine breathing.
• Fuel Systems Flex fuel kits, fuel injectors, and fuel pumps for performance fuel delivery requirements.
• Exhaust Systems Performance exhaust systems including headers, hi-flow cats, and cat-back systems for various vehicle applications.
• Forgeline Wheels Premium American-made forged wheels available in Carbon Forged, Motorsport, Off Road, Performance, Monoblock, Heritage, Concave, and Premier styles. Distributed in Australia by Harrop as an authorized Forgeline dealer. Warranty provided by Forgeline US.
• LSA Performance Systems (Stage 1, 2 & 3) Progressive performance upgrade packages for HSV Gen-F LSA vehicles with optional driveline warranty, ranging from Stage 1 to Stage 3 configurations. Stage 5 LSA package on HSV Gen-F GTS produces 607kW and 1091Nm at the hubs.
• Superado V8 Swap System Complete engineering solution for transplanting a Harrop TVS2650 Supercharged LSA V8 engine into Holden Colorado RG dual cab utes, including custom looms, GM E38 ECU integration, 6L80 6-speed automatic transmission mating, and full engineering compliance. Produces 396kW and 825Nm of torque.
• Brian Tooley Racing (BTR) Products Aftermarket performance brand offering camshafts, valvetrain components, and performance parts distributed in Australia through Harrop's partnership with Brian Tooley Racing.
• Harrop Casting Technologies Non-ferrous casting specialist producing aluminium, brass, copper, and magnesium products including housings, brackets, manifolds, and engine parts using Gravity Die Casting, Sand Casting, Core Blowing, and Shell Cores. Quality accredited to ISO9001:2015. Castings range from hundreds of grams to over 100 kilograms. Serves marine, military, industrial, aviation, and general manufacturing sectors.
• Harrop Performance Centre (HPC) Installation & Repair Services In-house installation, custom build, and warranty repair services performed at Harrop's Preston, VIC headquarters workshop. Supercharger and differential repairs carry a 30-day limited warranty; installation workmanship carries a 12-month warranty.

Quantifiable outcome

• Harrop TVS2650 Supercharger for Ford Mustang GT 5.0L produces 535kW/809Nm at Stage 1 (8.5psi) versus stock 339kW/556Nm — approximately 58% power increase
• +7 more outcomes

Named customers11 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Twelve partnerships are on record, tiered core and minor.

• Eaton CorporationcoreTechnology or IntegrationHarrop Engineering is a master distributor of Eaton Supercharger and Traction products for the Australian and international markets. This relationship provides exclusive access to Eaton's TVS (Twin Vortices Series) supercharger rotating groups and differential technologies (Truetrac, ELocker, Detroit Locker) that form the foundation of Harrop's core product lines.
• Tough DogcoreStrategic or Co-development PartnerTough Dog is a key suspension partner for Harrop's 4x4 project vehicles including the Hilux, Colorado, and Amarok. Tough Dog provides foam cell shocks, springs, and suspension components that are integrated into Harrop's complete vehicle enhancement packages.
• Fox ShocksminorStrategic or Co-development PartnerFox Shocks supplies high-performance suspension components for Harrop 4x4 development vehicles. Fox 2.5 DSC coil-overs with Dual Speed Compression damping were used in Harrop's Hilux project build for adjustable high and low speed compression damping.
• Killa KustomscoreStrategic or Co-development PartnerKilla Kustoms is the engineering partner for the Harrop Superado project — a complete V8 engine swap system that transplants a Harrop TVS2650 Supercharged LSA engine into Holden Colorado RG dual cab utes. Killa Kustoms handles custom looms, ECU integration with GM E38, and transmission mating.
• Performax (Queensland)minorImplementation/ SI/ Consulting PartnerPerformax performed the complex LHD to RHD conversion on Harrop's Corvette Z06 (Project Wixom) for Australian road registration. The Corvette conversion is noted as the most complicated RHD conversion due to tight packaging and body construction.
• Forgeline MotorsportscoreChannel Partner/ Reseller/ DistributorHarrop is an authorized Forgeline wheel dealer, offering Forgeline's range of custom forged and carbon forged wheels (Monoblock, 3-Piece, Motorsport, Off Road, Performance, Heritage series) alongside Harrop's automotive performance products.
• HPX AustraliaminorChannel Partner/ Reseller/ DistributorHPX Australia supplies 3-inch turbo back exhaust systems for Harrop 4x4 project vehicles including the Hilux and Amarok. HPX systems are made from high-grade stainless steel and provide improved exhaust gas flow with sport truck exhaust notes.
• Rhino 4x4minorChannel Partner/ Reseller/ DistributorRhino 4x4 supplies integrated evolution sports bars and winch bars for Harrop 4x4 project vehicles including the Hilux and Amarok. Products feature steel construction with integrated aluminium bash plates and LED fog lights.
• Method Race WheelsminorChannel Partner/ Reseller/ DistributorMethod Race Wheels supplies wheels for multiple Harrop 4x4 project vehicles including the Colorado, Tundra, and Amarok. Products include Method Grid and Method Matte Black NV wheels in various sizes for performance and off-road applications.
• Drift CadetsminorStrategic or Co-development PartnerDrift Cadets operates a fleet of Harrop Supercharged Toyota 86 drift cars at events including Summernats, MotorEx, and SA Time Attack. Their fleet of three Harrop TVS1320 Supercharged 86s and one TVS1900 Supercharged VE SS Ute demonstrates Harrop supercharger reliability in demanding motorsport applications.
• Detroit SpeedminorStrategic or Co-development PartnerDetroit Speed designed and built the 'Tux' 69' Camaro featuring a Harrop Supercharged LS3 engine, which won the SEMA Battle of the Builders award. Detroit Speed is recognized as a leading US hot rod and performance vehicle builder.
• Various Industrial CustomersminorOthersHarrop Casting Technologies serves customers across marine, military, industrial, aviation, and general manufacturing sectors with precision cast components. Operations are quality accredited to ISO9001:2015.

Scale indicators7 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• ProCharger: Leading manufacturer of centrifugal supercharger systems for muscle cars, trucks, and SUVs in the US. Comparable to Harrop's TVS-based kits but with a different compressor architecture; both serve the same performance aftermarket with platform-specific kits.
• Edelbrock: Long-established US manufacturer of intake manifolds, superchargers (Pro-Tuner, E-Force), and other performance engine components. Overlaps directly with Harrop on Hurricane-style intake manifolds and complete supercharger kits for V8 platforms.
• Whipple Superchargers: US-based designer and manufacturer of twin-screw supercharger kits for Mustang, Camaro, truck, and SUV platforms. Most directly comparable to Harrop as a specialist supercharger kit maker serving the same enthusiast and OE-adjacent customers.
• Magnuson Superchargers: Specialist TVS-based supercharger kit maker for LS, LT, Coyote, and HEMI platforms. Most directly comparable competitor since both engineer kits around Eaton TVS rotating groups, addressing similar OEMs and aftermarket customers.
• ARB 4x4 Accessories: Australian 4x4 accessories leader offering locking differentials (Air Locker), suspension, and driveline products. Directly comparable to Harrop's ELocker and Truetrac offerings for the 4x4 enthusiast segment, particularly in Australia.
• Tilton Engineering: Specialist motorsport and performance component manufacturer (clutches, brake systems, bellhousings). Comparable to Harrop on the Ultimate Big Brake Kit and Tremec short-shifter lines, both serving professional and semi-professional motorsport teams.

Broad incumbents

• Roush Performance: Larger US Ford-focused performance brand offering superchargers, exhausts, cold-air intakes and complete built vehicles. Comparable on the Mustang/Coyote platform side, but broader portfolio and OE-adjacent scale make it a larger incumbent in the same niche.
• Garrett Motion: Global tier-1 turbocharger and performance technology supplier with OE programs and aftermarket G-Series turbos. Broader incumbent in forced induction; competes conceptually with Harrop's supercharger kits but at much larger scale across turbo and EV-adjacent technologies.

Emerging players

• Cobb Tuning: US-based aftermarket performance and ECU tuning company offering intakes, intercoolers and bolt-ons for Subaru, Ford, Mazda and VW platforms. Comparable on the 86/BRZ platform side and on the tuning/E85-flex ecosystem, but smaller scale and software-centric.

Regional players

• HKS Co., Ltd. Japan-based performance parts manufacturer specialising in turbochargers, exhausts, ECUs and supercharger kits (HKS GT). Comparable product mix in superchargers, intakes, and electronic tuning, but primarily serves Japanese-domestic and Asian markets rather than Australia/US.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/watch?v=0jUH7ewgRsA
• Xx.com/harropau

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries2 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 Harrop Engineering