What Diamond Pistons does

Diamond Pistons is a precision manufacturer of custom and shelf-stock high-performance forged pistons, founded in 1968 and headquartered in Clinton Township, Michigan. The company produces forged pistons primarily from 2618 and 4032 aluminum alloys using in-house CNC machining, 3D modeling, and materials testing, and offers a catalog of 3,838+ piston SKUs covering an estimated 90% of common applications with same-day shipping on shelf-stock items and ~3-week lead times on custom orders. Supporting product lines include Pro-Select and Black Diamond piston rings, a three-tier wrist pin family (G-Series entry-level, H-13 power-adder, TP-1 proprietary maraging/M2 hybrid for elite racing), wrist pin locks, support rails, competition-grade diesel pistons for Cummins/Duramax/Powerstroke engines, and branded apparel. Pricing ranges from ~$7 support rails to $2,717 per piston kit for high-end applications like the Mercedes M275.

The business model is direct hardware sales to a fragmented aftermarket customer base of professional racers, engine builders, and performance enthusiasts, executed through three channels: a direct e-commerce storefront at diamondracing.net, an authorized dealer/distributor network, and phone-based technical sales staffed by application specialists in Austin, Clinton Township, and Daytona. The company is a private subsidiary within the Race Winning Brands portfolio (which also owns JE Pistons, Wiseco, Manley, Boostline, and others), reports no public financials, and sells 100% made-in-USA product. Marketing emphasizes racing heritage and community engagement through blog content, social media (Facebook, Instagram, YouTube), and the Pink Piston Project charity initiative supporting the American Cancer Society.

Name

Diamond Pistons

Legal name

Diamond (doing business as Diamond Pistons / Diamond Racing)

Website

https://diamondracing.net

Company type

Private

Founded year

1968

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

High-Performance Automotive Pistons

NAICS

Forging and Stamping (33211), Motor Vehicle Metal Stamping (336370), Forging and Stamping (3321)

SIC

Metal Forgings & Stampings (3460), Wholesale-Motor Vehicle Supplies & New Parts (5013), Motorcycles, Bicycles & Parts (3751)

akta.pro primary industry

Passenger Vehicle Engine Systems Manufacturing (ICE) (IMACAAAF)

Keywords

• Forged piston manufacturing
• High-performance pistons
• Racing engine components
• Automotive aftermarket parts
• Custom forged pistons

Headquarters

HQ city

Clinton Township

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Piston Sales: Sale of high-performance forged pistons for domestic muscle cars, sport compact vehicles, and NHRA drag racing applications. Both shelf-stock and custom pistons available. Shelf stock ships same day; custom orders take approximately 3 weeks.
2. Piston Ring Sales: Pro-Select Piston Rings sold as sets for various engine configurations. Bore sizes ranging from 3.346 to 4.675 inches.
3. Wrist Pin Sales: Three-tier wrist pin product line: G-Series (entry-level 4130 chrome moly), H-13 Series (power-adder applications), and TP-1 Series (top-tier racing).
4. Wrist Pin Lock Sales: Wrist pin retaining solutions including Round Wire Locks, Spirolocs, and Tru Arc Locks. Compatible with wrist pin diameters 0.490 to 2.000 inches.
5. Support Rail Sales: Oil ring groove support rails for piston ring stability, accommodating bore sizes 2.953 to 5.225 inches.
6. Diesel Piston Sales: Billet 2618 forged diesel pistons with type 3 hard anodizing and optional PTFE treatment. Available for Cummins, Duramax, and Powerstroke engines.
7. Apparel Sales: Branded merchandise including t-shirts, hoodies, hats, and accessories featuring Diamond Pistons branding.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Diamond Pistons manufactures precision-engineered forged pistons for high-performance automotive applications including drag racing, circle track, road racing, diesel, and street performance engines. The company produces both shelf-stock SKUs (covering 90% of applications with same-day shipping) and fully custom piston solutions, supported by a complete in-house operation of CNC machining, 3D modeling, and materials testing using 2618 and 4032 aluminum alloys.

Product overview

Diamond Pistons is a precision-engineered high-performance piston manufacturer offering both shelf-stock and custom piston solutions. The core product portfolio centers on forged pistons for drag racing, circle track, road racing, diesel, and street performance applications. Supporting products include Pro-Select piston rings, wrist pins in three material tiers (G-Series for standard use, H-13 for power-adder applications, and TP-1 for extreme racing), wrist pin locks (Round Wire, Spirolocs, Tru Arc), and support rails. The company also offers diesel-specific pistons with hard anodizing for Cummins, Duramax, and Powerstroke engines. Custom piston services provide bore changes, dome shape modifications, and billet creations. A Compression Calculator tool and Custom Piston Order Form support the engineering workflow. The company manufactures 100% in the USA with in-house CNC machining and 3D modeling capabilities.

Differentiator

Problem solved

Functional benefit

Brands

• Pro-Select: Piston ring product line featuring precision-engineered components including file-to-fit designs, Napier-cut second rings, and standard tension oil rings for street performance, drag racing, and motorsport applications.
• Black Diamond
• G-Series
• H-13 Series
• TP-1 Series

Products and services

• High-Performance Pistons Forged aluminum pistons engineered for extreme racing and street performance applications across GM, Ford, Honda, BMW, Mercedes, and Lamborghini engine platforms.
• Pro-Select Piston Rings Performance piston ring sets for mild naturally aspirated to high-horsepower power-adder engine builds.
• G-Series Wrist Pins Cost-effective wrist pins made from 4130 chrome molybdenum, designed for naturally aspirated race engines and OEM replacements.
• H-13 Series Wrist Pins Wrist pins built from H-13 tool steel alloy for high-performance and power-adder engine applications with extreme stress and high temperatures.
• TP-1 Series Wrist Pins Premium wrist pins used by NHRA Top Fuel, Funny Car, and Pro Stock teams, offering the highest level of toughness and hardness for extreme racing.
• Wrist Pin Locks Retaining solutions for wrist pins, sold in matched sets for consistent fit across all cylinders.
• Support Rails Precision-engineered support rails that enhance piston ring stability and sealing in performance engine builds.
• Diesel Pistons Forged diesel pistons built for Cummins, Duramax, and Powerstroke engines in competition applications with high compression ratios and extreme combustion heat.
• Custom Pistons 100% custom piston engineering and manufacturing service covering simple bore changes, reconfigured dome shapes, and one-off billet creations for engine builders with unique requirements.
• BMW S63B44 Forged Pistons Forged piston kit for BMW S63B44 engines rated for 1,400+ HP builds with 3D-milled crowns, side gas ports, and reinforced skirt geometry.
• Diamond Pistons Chamber Mold Kit A specialized tool for molding cylinder head combustion chambers used by engine builders.

Quantifiable outcome

• 2,000+ horsepower capable 2K series shelf-stock pistons
• +3 more outcomes

Named customers7 records

Segments4 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Race Winning Brandsparent companyOthersDiamond Pistons is a brand under the Race Winning Brands (RWB) family of performance automotive companies. RWB includes other performance brands such as JE Pistons, Wiseco, Manley, MGP Connecting Rods, Boostline, RevMax, and others. Diamond's Pink Piston Project supports the American Cancer Society alongside fellow RWB brands.

Scale indicators7 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Arias Pistons: Manufacturer of high-performance pistons for racing, street performance, and powersports. Directly comparable forged piston product range targeting similar enthusiast and engine-builder customers.
• Wiseco: Another sister brand within Race Winning Brands producing forged pistons for powersports, motorcycle, and automotive racing. Overlapping SKU coverage and channel reach make it the second-closest competitor for Diamond in the piston category.
• Ross Racing Pistons: Manufacturer of forged pistons for circle track, drag racing, and street performance. Comparable niche focus and customer base to Diamond, particularly in NASCAR and short-track racing segments.
• Trend Performance: UK-based manufacturer of forged pistons and connecting rods for motorsport applications. Comparable product line focused on high-stress racing builds, with strong European presence relevant to Diamond's international expansion.
• JE Pistons: Sister brand within Race Winning Brands that manufactures high-performance forged pistons for motorsport and street performance. Directly comparable product portfolio, customer base, and distribution model, creating the most relevant head-to-head comparison for Diamond.
• CP-Carrillo: Specialist manufacturer of forged pistons and connecting rods for motorsport and high-performance street applications. Closely comparable product line, customer segments, and technology positioning to Diamond Pistons.

Broad incumbents

• Mahle Motorsport: Motorsport division of Mahle, a global Tier-1 automotive supplier producing high-performance pistons and engine components. Compares to Diamond across racing and premium OE-adjacent markets but at much larger scale and broader OEM footprint.
• JE Pistons / Wiseco Pro Series Competitors (Federal-Mogul / Speed-Pro): Federal-Mogul's Speed-Pro brand offers a broad catalog of performance pistons and engine components as part of a much larger global aftermarket portfolio. Comparable product category but at significantly larger scale and broader reach than Diamond.

Emerging players

• BoostLine: Sister RWB brand specializing in high-strength connecting rods for boosted and high-horsepower applications. Adjacent product category sharing Diamond's engine-builder channel and customer base.
• Manley Performance: Sister RWB brand producing connecting rods, valves, and related engine components for performance markets. Comparable customer base and overlapping engine-builder channel with Diamond Pistons.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@DiamondPistons
• Facebookfacebook.com/369607716425973
• Instagraminstagram.com/revmaxconverters
• LinkedInlinkedin.com/company/diamond-pistons

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Diamond Pistons