What Feuling Parts does

Feuling Parts is a privately held American manufacturer of high-performance aftermarket engine components and accessories designed exclusively for Harley-Davidson V-Twin motorcycles. Founded in 1974 by Jim Feuling (1945-2002) as Feuling Engineering/R&D/Advanced Technologies, the company originally operated as an R&D and licensing firm working with Harley-Davidson, Ford, General Motors, and other OEMs, amassing more than 100 US patents in internal combustion engine design and fluid dynamics. After the founder's death in 2002, the business was repositioned as Feuling Parts, a spin-off focused on the Harley-Davidson aftermarket, specializing in oil pumps, camshafts, lifters, camplates, pushrods, fuel injectors, cylinder head components, and complete camchest kits organized around two parallel product tiers — HP+ for street performance and RACE SERIES for top-tier racing applications.

The core product portfolio centers on internal engine components engineered for Harley-Davidson engine families (EVO, Twin Cam, Milwaukee Eight, and Sportster), with proprietary technologies including the patented Anti-Reversion exhaust system, Stepped Dogball Muffler, CENTERFIRE and MAX FLOW cylinder heads, and the W3 three-valve combustion chamber. Feuling markets a two-tier system (HP+ and RACE SERIES) that runs across multiple component categories, supported by branded sub-lines including Reaper Camshafts, Beehive Valve Springs, Fast Install Pushrods, and Bulletproof Camchests. Products are designed and tested using dyno validation and track-proven development, with quantifiable performance claims including 15-30 PSI oil pressure increases, 15-30 degree cooler engine temperatures, and 2-3 HP gains at the rear wheel.

Commercially, Feuling operates a hybrid go-to-market model combining direct-to-consumer e-commerce via feulingparts.com with a multi-region distributor and dealer network. Major channel partners include Drag Specialties, J&P Cycles, Revzilla, Parts Europe, Parts Canada, and Rollies Speed Shop (Australia), giving the company reach across North America, Europe, Australia, and Japan. Pricing is unit-based (no subscription), spanning roughly $12 spark plugs to ~$2,996 exhaust systems, with complete camchest kits ranging $859.95-$2,289.85. Revenue is one-time transactional across parts, accessories, and branded apparel. The company carries a CARB Executive Order (EO# D-881-1) on key kits, supporting California market access for emissions-compliant performance upgrades.

Name

Feuling Parts

Legal name

Feuling Parts

Website

https://feulingparts.com

Company type

Private

Founded year

1974

Operating status

Operating

Headcount range

1–10 employees

Short description

Feuling Parts is a privately held American manufacturer of high-performance aftermarket engine components — camshafts, oiling systems, lifters, and camchest kits — designed exclusively for Harley-Davidson V-Twin motorcycles, sold through global distributors and direct e-commerce.

Ownership category

akta.pro rank

Product category

Motorcycle Performance Parts

NAICS

Motorcycle, Bicycle, and Parts Manufacturing (336991), Motor Vehicle Gasoline Engine and Engine Parts Manufacturing (336310)

SIC

Motorcycles, Bicycles & Parts (3751), Motor Vehicle Parts & Accessories (3714)

akta.pro primary industry

Motorcycle Manufacturing (ICE) (IMACAEAA)

Keywords

• Harley-davidson aftermarket parts
• Performance engine components
• Motorcycle camshafts lifters
• Oiling system kits
• V-twin engine parts

Headquarters

HQ city

Oceanside

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Aftermarket Parts Sales: Direct sales of high-performance aftermarket engine components for Harley-Davidson motorcycles including oil pumps, camshafts, lifters, pushrods, camplates, fuel injectors, and accessories through e-commerce, dealers, and distributors.
2. Racing Components: Specialized race-only parts including high-flow fuel injectors, camshafts, and valve-springs designated for competition use.
3. Apparel and Merchandise: Branded apparel including hats, t-shirts, water bottles, bike mats, and history books.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels6 records

Core offering

Feuling Parts designs, manufactures, and sells high-performance aftermarket engine components and accessories exclusively for Harley-Davidson V-Twin motorcycles. Core product lines include REAPER camshafts, hydraulic roller lifters (HP+ and RACE SERIES), complete camchest kits, oiling system kits, pushrods, high-flow fuel injectors, air cleaners, patented Anti-Reversion exhaust systems, and billet aluminum engine accessories, sold through e-commerce and a global dealer/distributor network.

Product overview

Feuling Parts is a designer and manufacturer of world-class performance aftermarket engine components and accessories exclusively for American V-Twin motorcycles, primarily Harley-Davidson. The product portfolio centers on internal engine components including REAPER camshafts, hydraulic roller lifters (RACE SERIES and HP+ lines), complete camchest kits, high-flow oiling system kits (HP+ and RACE SERIES for Twin Cam and Milwaukee Eight engines), fuel injectors, air cleaners, pushrods, engine covers, and specialty tools. The offering is organized around two engine platform tiers — HP+ (performance upgrade) and RACE SERIES (top-tier racing) — which represent parallel product lines across multiple component categories. Additionally, Feuling offers branded apparel, accessories, and merchandise. The company also provides technical resources including e-catalogs, cam specifications, dyno charts, installation instructions, and an oiling system comparison tool to support the sales of its physical products.

Differentiator

Problem solved

Functional benefit

Brands

• Reaper Camshafts: Camshaft product line trademarked by Feuling
• Beehive Valve Springs
• HP+
• Race Series
• Fast Install Pushrods
• Bulletproof Camchests
• W3
• BA Air Cleaner
• AR Anti-Reversion

Products and services

• REAPER Camshafts High-performance camshaft line including Twin Cam 543 and Milwaukee Eight Reaper 465 models, designed for improved power delivery across RPM ranges for Harley-Davidson engines.
• RACE SERIES Lifters Full-travel hydraulic roller lifters with precision-ground needle roller bearings, slower bleed-down rate for higher valve spring pressures, and increased roller clearance for aggressive camshafts. Compatible with Milwaukee Eight, Twin Cam, and Sportster engines.
• HP+ Lifters Performance hydraulic roller lifters for stock to mild built engines, optimizing oil flow to the top end valvetrain, reducing wear and extending top end life. Drop-in replacement for stock lifters.
• RACE SERIES Camchest Kits Complete camchest upgrade kits for Milwaukee Eight oil-cooled engines including Reaper camshafts, RACE SERIES lifters, one-piece pushrods, RACE SERIES oil pump, HIGH FLOW camplate, and ARP hardware. CARB EO# D-881-1 compliant.
• BA Air Cleaner Kit High-flow bolt-on air cleaner for Harley-Davidson motorcycles featuring a billet aluminum velocity stack, reusable air filter, and convertible backing plate with optional cylinder head venting. Designed to increase air velocity and deliver added volume for balanced dynamic flow.
• HP+ One Piece Pushrods Fixed-length 4130 chrome moly one-piece pushrods with 0.165-inch wall thickness for Milwaukee Eight engines, eliminating pushrod flex and reducing valve-train harmonics. Stock replacement lengths designed for factory base circle camshaft dimensions.
• Quick Install Pushrods + Tube Kit Adjustable quick-install pushrods with 3/8-inch OD tube and 0.134-inch wall thickness for Twin Cam engines, allowing installation without removal of rocker covers. Features heavy-duty 7/16-inch threads and chrome tubes.
• HP+ Oiling System Complete oiling system kit for Twin Cam '07–'17 engines including billet 6061 aluminum high-volume oil pump, HIGH FLOW anodized camplate (7075 aluminum), HP+ hydraulic roller lifters, gaskets and O-ring kit. Increases oil pressure and volume for improved engine performance.
• RACE SERIES Oiling System Complete oiling system kit for Twin Cam '07–'17 engines featuring billet 7075 hard-anodized oil pump (50% harder than factory), RACE SERIES lifters with full 0.200-inch total travel, HIGH FLOW camplate, gaskets and O-rings. Designed for heavy valve spring pressures and aggressive camshafts.
• RACE SERIES Oiling System for Oil Cooled Engines Complete oiling system kit for Milwaukee Eight '17–'26 oil-cooled engines with 27% more pressure and scavenge gear volume over stock, 46% more oil volume to crankshaft and rod bearings, and 15–25 degree cooler engine temperatures. Includes billet 7075 aluminum components.
• FEULING Fuel Injector High-flow fuel injectors for Harley-Davidson motorcycles available in multiple flow rates: 7.6 g/s (73% more fuel than OE, supporting 185+ HP) and 5.3 g/s (20% more fuel than OE). EV-6 USCAR connector type, for race application only.
• FEULING Anti-Reversion M-Eight Bagger 2 into 1 Exhaust Hand-crafted stainless tuned-length 2-into-1 exhaust for Milwaukee Eight Touring models featuring patented Anti-Reversion chambers (Patent US 4206600 A & 6336471 B1) and stepped Dogball muffler inserts (Patent 5,173,576). Triple-stepped header pipes from 1¾ to 2 inches with 2¾-inch collector exit.
• Feuling Apparel (Hats, T-Shirts) Branded apparel including snapback hats (Low-Pro, Trucker, Mesh, Rope, Classic styles), t-shirts (Deadwood Tee, Black Ops Tee, Original W3 Tee, Freedom, Flying Pig, Gold Tee, Retro Parts & Racing Tee, Bulletproof), water bottles, and bike mats.
• Feuling History Book Coffee table book titled 'Engineering the Future' covering the 50-year history of Feuling, including Jim Feuling's patents, world-class racing achievements, and future projects. Includes mission statement and business profile.

Quantifiable outcome

• 2-3 HP and 2-4 ft/lbs torque gain to rear wheel from oiling system upgrades
• +6 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Twelve partnerships are on record, tiered core, major and minor.

• Harley-DavidsoncoreStrategic or Co-development Partner · 1 January 1974Feuling Parts was created as a spin-off of Feuling R&D's contract work with corporate Harley Davidson. The company designed and licensed cylinder head and valve technology to Harley Davidson for the Twin Cam engine. Feuling also worked on the Feuling W3 engine and motorcycle program with Harley-Davidson.
• Chevrolet / General MotorsmajorStrategic or Co-development PartnerFeuling conducted R&D and licensing work with GM. Notable achievements include designing the Oldsmobile Indy engine and the Aurora V8 Indy engine, as well as technology that contributed to the Cadillac Northstar engine. Jim Feuling received recognition for the BE Quad-4 racing engine project.
• Ford Motor CompanymajorStrategic or Co-development PartnerLicensed the patented 3-valve combustion chamber design to Ford Motor Company. Additional R&D work conducted under contract.
• Bell Helmets / ShoeiminorStrategic or Co-development PartnerDesigned and licensed patented 'aero' helmet designs to Bell Helmets. Additional helmet technology work with Shoei.
• Cessna / Mooney / QuickieminorStrategic or Co-development PartnerAircraft company partnerships for R&D contracts in aviation engine design and development, including the design and manufacture of Quickie and Q2 airplanes.
• Drag SpecialtiesmajorChannel Partner/ Reseller/ DistributorPrimary USA distributor for Feuling Parts products. Dealers and consumers can purchase Feuling products through Drag Specialties dealer network.
• J&P CyclesmajorChannel Partner/ Reseller/ DistributorMajor USA distributor and retailer of Feuling Parts products, serving both dealers and direct consumers.
• RevzillamajorChannel Partner/ Reseller/ DistributorMajor online retailer and distributor of Feuling Parts products serving consumers directly.
• Parts EuropemajorChannel Partner/ Reseller/ DistributorPrimary European distributor for Feuling Parts products covering EU markets.
• Parts CanadamajorChannel Partner/ Reseller/ DistributorPrimary Canadian distributor for Feuling Parts products.
• Rollies Speed Shop (Australia)minorChannel Partner/ Reseller/ DistributorAustralian distributor for Feuling Parts products.
• NEO Factory / Sundance (Japan)minorChannel Partner/ Reseller/ DistributorJapanese distributors for Feuling Parts products.

Scale indicators5 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• S&S Cycle: S&S Cycle is a leading manufacturer of aftermarket performance parts for V-Twin Harley-Davidson engines — including camchest kits, cylinder heads, fuel systems, and exhaust — making it Feuling's most direct competitor across nearly every product line.
• Baker Drivetrain: Baker Drivetrain designs and builds high-performance transmissions and drivetrain assemblies for V-Twin Harley-Davidson motorcycles, sharing the same performance-enthusiast customer and aftermarket channel ecosystem as Feuling.
• Kuryakyn: Kuryakyn is a major aftermarket manufacturer of V-Twin motorcycle accessories, performance parts, and lifestyle products, overlapping with Feuling on certain performance categories and serving the same Harley-Davidson enthusiast channels.
• TAB Performance: TAB Performance produces aftermarket exhausts, fuel management, and performance components for V-Twin touring and cruiser motorcycles, overlapping with Feuling's exhaust and performance-tier offerings for the Harley-Davidson customer.
• Andrews Products: Andrews Products is a long-established manufacturer of aftermarket camshafts, valve-train components, and engine-related parts for V-Twin motorcycles, competing head-to-head with Feuling's REAPER camshaft and valvetrain lines.
• Vance & Hines: Vance & Hines designs and manufactures high-performance exhaust systems, fuel management, and engine components for V-Twin Harley-Davidson motorcycles, overlapping directly with Feuling's exhaust and engine-component offering and sharing the same enthusiast customer base.
• Zipper's Performance: Zipper's Performance offers performance engine-building services, machine shop work, and parts for big-inch V-Twin Harley-Davidson builds, competing directly with Feuling in the high-end performance camchest and engine-upgrade market.
• Daytona Twin Tec: Daytona Twin Tec manufactures aftermarket engine control units, ignition systems, and fuel-injection components for V-Twin motorcycles, complementing and competing with Feuling's fuel injector and engine-electronics-adjacent product set.

Broad incumbents

• Edelbrock: Edelbrock is a long-established broad-line performance-parts manufacturer spanning automotive and powersports — including V-Twin manifolds and related components — and is a prior Feuling R&D licensing partner, making it comparable as a wider-portfolio incumbent in the same engineering space.

Others

• J&P Cycles: J&P Cycles is one of Feuling's largest US distributor/retail-channel partners; it is comparable as an adjacent ecosystem participant — a major powersports aftermarket distributor/retailer that channels Feuling products to end consumers alongside competitor brands.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/feuling-oil-pump-corporation

Revenue estimate

Valuation estimate

Number of profiles

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 Feuling Parts