Powermaster Starter Motor

Powermaster Starter Motors: Built for High-Compression Performance

When a modified engine demands more than a stock starter can deliver, Powermaster Performance has long been the name muscle car builders, hot rodders, and racers turn to. Starter motors are often an afterthought during a high-compression build—but they shouldn't be. A weak starter on a built engine can leave you stranded on the street or stuck in the pits, and Powermaster exists specifically to solve that problem.

Headquartered in West Chicago, Illinois, Powermaster has spent decades engineering starters that are lighter, more compact, and more powerful than OEM units. Their catalog covers an impressive range of applications—from mild street builds to all-out competition engines—with a full lineup of distinct starter families tailored to different compression ratios and use cases.

The Powermaster Starter Lineup

One of the standout features across much of Powermaster's starter range is the proprietary InfiCLOCK system, which allows full 360-degree rotation of the starter body. This means builders can precisely position the unit to clear tight oil pans, aftermarket headers, and other underhood obstacles that often make installation a nightmare with factory starters.

• XS Torque: The flagship of the lineup for serious builds. The XS Torque puts out up to 200 lb-ft of torque with a 4.4:1 gear-reduction ratio, and is recommended for engines with compression ratios up to 18:1. It features a machined adjustable billet aluminum mounting block, making it one of the lightest 200 lb-ft starters available. An encapsulated solenoid eliminates heat-soak and hot-start problems, and each unit ships with dyno test results included as a proof-of-performance guarantee.
• Mastertorque: Designed for high-performance engines up to 14:1 compression, the Mastertorque delivers 180 lb-ft of torque with a 3.25:1 gear reduction and 1.8 hp output. It uses the InfiCLOCK 360-degree mounting system and a machined-aluminum adapter block in a compact package that accommodates most oil pans and headers.
• PowerMax Plus: Available in models rated for 11:1, 14:1, and 16:1 compression engines, the PowerMax Plus with its 1.7 HP motor and 4.4:1 gear reduction is a versatile choice for street and mild-performance builds across a wide range of GM, Ford, and other platforms.
• Powermax (LS): Powermaster's lightweight LS-specific Powermax starter uses a permanent magnet design that provides higher cranking torque with low amperage draw. A 1.2 kW motor and 6:1 planetary gear ratio deliver strong cranking in a featherweight 7.5 lb package, with 12 clocking positions to clear even the tightest header and oil pan combinations.
• Ultra Torque: Aimed at large-displacement performance builds, the Ultra Torque features a 2.5 kW, 3.4 HP motor with a machined aluminum adjustable mounting block engineered to clear oversized and kick-out-style oil pans without clearance problems.
• Diesel Ultra: Built for the unique demands of large-displacement diesel V8s—especially modified engines that struggle to start in cold temperatures—the Diesel Ultra produces an impressive 260 lb-ft of torque with 3.6 hp and a 3.8:1 gear reduction ratio.
• Original Look: For builders who want modern performance in a period-correct package, the Original Look starter retains a retro-style appearance while producing 100 lb-ft of torque for engines up to 10:1 compression, with a direct-drive design and large armature.

Why Powermaster Stands Apart in the Starter Category

Powermaster starters aren't simply rebranded off-the-shelf units—they are purpose-engineered for specific compression ranges, engine families, and installation environments. The combination of gear-reduction technology, InfiCLOCK adjustability, billet aluminum construction, and factory dyno testing sets them apart from budget alternatives. Whether you're building a weekend cruiser or a purpose-built race car, Powermaster's starter motor lineup has a solution dialed in for your compression ratio, application, and available underhood space. Explore the complete Powermaster Performance catalog to find alternators, battery boxes, and other electrical components that complement their starters in a complete charging and starting system.