Gearstar Performance Transmissions

What Gearstar Performance Transmissions does

Gearstar Performance Transmissions is a privately-held, Akron, Ohio-based custom builder of high-performance automatic transmissions, founded in 2001 and operating with 11-50 employees. The company hand-assembles automatic transmissions — primarily Turbo 400, 4L80E, 4L85E, 6L80E, 200R4, and 700R4 units — for Ford, GM, and MOPAR high-horsepower applications, with each unit built by a single master technician and dyno tested for the equivalent of 100 miles before shipment. The technical platform is built around premium US-made components from suppliers including Sonnax (Smart-Tech drum modules), Coan Racing (billet pump stator and gear train), and Reid Racing (SFI-certified aluminum cases), enabling builds rated up to nearly 3,000 horsepower as demonstrated in professional drag racing applications.

The business operates a direct-to-consumer model combining an e-commerce storefront (gearstar.com) for parts and accessories, phone-based consultative sales for custom builds, and a "Get an Estimate" tool for high-value transactions. Pricing ranges from $795 for individual billet components to $26,199 for complete supercharged engine assemblies, with custom transmissions typically quoted in the $10K-$25K+ range. The product line has expanded beyond transmissions to include GM LS-compatible and Marine Big Block engine assemblies (376CI-632CI displacements) sourced through a strategic partnership with BluePrint Engines, positioning the company as a full powertrain provider for high-performance street/strip and marine applications.

Customer segments span individual performance enthusiasts, semi-professional racing teams competing in events like HOT ROD Drag Week, and SMB transmission shops requiring turnkey high-horsepower solutions. Marketing is concentrated in enthusiast channels — Instagram, Facebook, YouTube, automotive press (HOT ROD magazine), and technical blog content. The company is bootstrapped (no disclosed funding), operates exclusively in the US market, and has maintained a 15+ year reputation with documented zero-defect returns from long-term customers. There is no evidence of AI/ML capabilities, software products, or recurring revenue streams; the entire value proposition rests on mechanical craftsmanship, quality assurance, and niche reputation.

Name

Gearstar Performance Transmissions

Legal name

GearStar Performance Transmission

Website

https://gearstar.net

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

11–50 employees

Short description

Gearstar Performance Transmissions is a privately-held Akron, Ohio manufacturer that hand-builds custom high-horsepower automatic transmissions (Turbo 400, 4L80E, and related units) and complete GM LS/Marine Big Block engine assemblies for performance enthusiasts, racing teams, and SMB transmission shops in the US market.

Ownership category

akta.pro rank

Product category

Performance Transmissions

NAICS

Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing (333612), Mechanical Power Transmission Equipment Manufacturing (333613)

akta.pro primary industry

Passenger Vehicle Transmission & Drivetrain Systems Manufacturing (ICE) (IMACAAAG)

akta.pro secondary industry

Clutch, Torque Converter & Flywheel Manufacturing (IMACAHAI)

Keywords

• Performance transmissions
• Automatic transmissions
• High horsepower builds
• Custom engine assemblies
• Automotive performance parts

Headquarters

HQ city

Akron

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Custom Performance Transmissions: Gearstar builds and sells custom performance automatic transmissions for high-horsepower applications. Pricing ranges from approximately $10,000-$25,000+ depending on specification. Each transmission is built to order for specific customer applications.
2. Performance Engines: Sale of complete engine assemblies including GM LS-compatible, Big Block, and Marine applications. Engines range from $11,999 to $26,199. They partner with BluePrint Engines to supply these assemblies.
3. Parts and Accessories: Sale of transmission parts including converters, controllers, flexplates, dipsticks, adapters, TV cables, and components such as the Billet Direct Drum ($795).

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels6 records

Core offering

Gearstar hand-builds custom high-performance automatic transmissions (Turbo 400, 4L80E, 4L85E, 200R4, 700R4, 6L80E) for Ford, GM, and MOPAR applications, with each unit assembled by a single master technician and dyno tested for the equivalent of 100 miles. The company also sells complementary GM LS and Marine Big Block engine assemblies (sourced from BluePrint Engines) and supporting performance parts such as converters, controllers, flexplates, billet drums, adapters, and TV cables.

Product overview

Gearstar Performance Transmissions is a custom transmission and performance engine parts company offering hand-built automatic performance transmissions (TH400, 4L80E, 4L85E, 200R4, 700R4, 6L80E) for Ford, GM, and MOPAR vehicles. Their core product is the single-technician-built transmission that undergoes 100-mile dyno testing. The company also sells a complementary line of engine assemblies (GM LS-compatible long blocks and complete assemblies from 376CI to 632CI displacements, plus GM Marine Big Block engines), performance parts (billet drums, converters, controllers, flexplates, dipsticks, adapters, TV cables), and engine oil coolers. All components are sourced from US-made parts. Their portfolio is organized around complete powertrain solutions for high-performance street/strip applications.

Differentiator

Problem solved

Functional benefit

Products and services

• Performance Transmissions Custom-built automatic performance transmissions including TH400 (Turbo 400), 4L80E, 4L85E, 200R4, 700R4, and 6L80E models for Ford, GM, and MOPAR applications. Each transmission is built by a single master technician from start to finish and dyno tested for 100 miles equivalent; designed for drag racing, street/strip, and high-horsepower applications up to 3,000+ HP.
• Billet Direct Drum for 4L80E/4L85E & TH400 Transmissions Billet aluminum direct drum designed for high-performance 4L80E, 4L85E, and TH400 transmissions, priced at $795.00 per unit. Targeted at performance builders and transmission shops.
• GM LS Compatible Engine Long Block GM LS Small Block Compatible Long Block engine assembly priced at $10,299.00, part of Gearstar's engine product line supplied via BluePrint Engines for high-performance street/strip builds.
• GM LS Compatible Engine Complete Assembly Complete engine assemblies in 376CI and 427CI displacements with various configurations including base dressed, deluxe dressed with carb or EFI systems, and supercharged variants. Pricing ranges from $11,999 to $26,199 for supercharged configurations. Sourced from BluePrint Engines.
• GM Marine Big Block Compatible Engine Marine big block compatible engines available in 540CI ($15,699) and 632CI ($18,699) displacements, base dressed with carb configuration. Designed for high-performance marine applications.
• Performance Torque Converters Performance torque converters for automatic transmissions, sold both standalone and bundled with Gearstar transmission builds. Linked to Yank Performance Converter (converter.cc).
• Transmission Controllers Electronic control units and controllers for managing transmission operation in performance applications.
• Flexplates Flexplates for performance transmission installations, connecting the engine crankshaft to the torque converter.
• Engine Oil Cooler Engine oil cooling systems for managing temperatures in high-performance engine applications.
• Transmission and Engine Dipsticks Transmission and engine dipsticks for fluid level measurement in performance builds.
• Transmission Adapters Transmission adapters for mating different transmission types to various engine configurations.
• TV Cables Throttle valve cables for controlling automatic transmission shift points in performance applications.

Quantifiable outcome

• Zero defective returns reported across 15+ years by long-term customer SportsFab
• +2 more outcomes

Named customers5 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

Feature4 records

Partnerships

Five partnerships are on record, tiered core.

• BluePrint EnginescoreStrategic or Co-development PartnerBluePrint Engines is a key partner supplying engine assemblies that Gearstar sells alongside their transmissions. Gearstar offers complete engine packages (427CI, 376CI, 540CI, 632CI GM LS and Big Block compatible engines) sourced from BluePrint Engines, ranging from $11,999 to $26,199. This partnership allows Gearstar to offer turnkey powertrain solutions to their customers.
• Yank Performance ConvertercoreChannel Partner/ Reseller/ DistributorYank Performance Converter is a recommended partner for torque converters. Their products are featured in the 'Shop by make' section alongside Ford, GM, and MOPAR options. Gearstar offers converters as both standalone parts and bundled with transmission builds. Yank converters are available at converter.cc.
• SonnaxTechnology or IntegrationSonnax provides the Smart-Tech drum module used in Gearstar's high-horsepower Turbo 400 builds. This component is critical for handling extreme power levels in racing applications.
• Coan RacingcoreTechnology or IntegrationCoan Racing supplies billet steel pump stator and gear train components for Gearstar's competition-grade transmissions. These precision components are essential for high-horsepower reliability.
• Reid RacingcoreTechnology or IntegrationReid Racing provides SFI-certified aluminum cases used in Gearstar's competition transmissions. The SFI certification ensures safety standards required for racing competition.

Scale indicators3 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Performance Automatic: Builds performance automatic transmissions and converter packages for street, strip, and muscle car applications; closely comparable product mix and customer profile to Gearstar.
• ATI Performance Products: Manufactures performance drivetrain products including transmissions and converters for drag racing and pro-touring; overlaps with Gearstar's high-horsepower transmission offerings and converter category.
• Circle D Specialties: Specializes in high-performance torque converters and complete transmission packages for racing and street performance - same customers, same horsepower envelope as Gearstar.
• Monster Transmission: Performance and heavy-duty automatic transmissions and converters; serves a similar enthusiast customer base with rebuilt and performance transmission solutions.
• RPM Transmissions: Custom performance transmissions for drag racing, street rods, and street/strip builds; competes in the same custom-build, high-horsepower transmission niche as Gearstar.
• TCI Automotive: Established performance transmission and torque converter manufacturer for drag racing, street rods, and muscle cars; competes head-to-head with Gearstar on automatic performance transmissions and converters.
• Hughes Performance: Custom high-performance automatic transmissions for street, strip, and drag racing - direct competitor in the same product category serving the same enthusiast and professional builder customer base as Gearstar.
• Yank Performance Converter: Performance torque converter manufacturer listed as Gearstar's channel partner and converter supplier; sells converters in the same horsepower range and to overlapping drag/street customers.

Others

• Sonnax: Supplies the Smart-Tech drum module and other high-performance transmission components that Gearstar integrates into its builds; key component supplier rather than direct retail competitor.
• Coan Racing: Supplies billet steel pump stators and gear train components for Gearstar's competition transmissions; specialist drivetrain component supplier serving the same end customers.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xtwitter.com/gearstar_trans
• YouTubeyoutube.com/user/Gearstar750
• Facebookfacebook.com/gearstar-performance-transmissions-230124675627
• Instagraminstagram.com/gearstarpro
• LinkedInlinkedin.com/company/gearstar-performance-transmissions

Compliance1 record

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 Gearstar Performance Transmissions