KB Performance Pistons

KB Performance is a brand of United Engine & Machine Company. It traces its heritage back to the knowledge and techniques used by the famous engine builder Keith Black, who modified and built legendary racing engines during the 1970s and 1980s. The KB Performance line of pistons is produced using everything that Keith Black knew, while utilizing modern-day manufacturing technologies and standards. They are offered ready for your high-performance and racing applications right out of the box.

Produced using high-silicon aluminum alloys, lightweight KB Performance pistons are designed to improve RPM changes and throttle response, while being durable enough to stand up to high compression and excessive temperatures. Every piston is manufactured with a variety of race-ready options like gas-accumulator grooves, high upper compression-ring locations, spiral-lock retainer grooves, and drilled oil returns. Their pistons feature a range of compression ratios for different performance requirements.

KB Performance provides pistons manufactured using high-quality 390 Hypereutectic alloy, with a variety of them featuring crowns and valve reliefs and drilled oil drain backs. The company’s pistons offer fully floating wrist pins and triple wound spiral locks. They are made out of reflective alloys that allow for greater power increases. KB Performance auto pistons are offered with 1/16th and 5/64th ring packs and have a wide array of compression ratios offered in dome and dish flat top styles. For most applications, lightweight wrist pins are offered. Go ahead and take a look at all of the pistons by KB Performance offered in our online catalog, you’ll find the pistons that meet your high performance needs!