KB Pistons Performance Hypereutectic Dished Piston Set - SB Chevy 283-400 - Bore Size: 4.030", Stroke: 3.480", Rod Length: 5.700"

Keith Black pistons have several important advantages over conventional alloy pistons. High silicon content yields superior thermal and wear characteristics, greater strength, scuff and seizure protection, and resistance to cracking. High silicon content also keeps heat in the combustion chambers, eliminating heat transfer and improving combustion. Pistons are machined for 5/64" top, 5/64" second and 3/16" oil ring unless noted. Sold in sets of eight with wrist pins (except Ford 2300cc, sold in sets of four).

Created from a high-silicon aluminum alloy, KB Performance pistons are lightweight to improve throttle response and RPM changes while still being strong enough to withstand high compression and high temperatures. Each piston is engineered with race ready features like high upper compression-ring locations, gas-accumulator grooves, drilled oil returns, and spiral-lock retainer grooves. KB Performance pistons are available for many popular engine makes and displacements. They also come in a variety of compression ratios to suit your performance needs. Have a look through our catalog and find the piston that meets your needs and wants today!UEM is committed to being a world class producer of cast and forged piston applications. Product quality is one of our core values, as well as one of our key business strategies. UEM operates a documented Quality Management System in compliance with ISO 9001:2015. As part of this commitment, our team is focused on upholding the eight principals of QMS. The automotive aftermarket is about using the cars we have and fully utilizing that resource until its life is met. On the race side it is about innovation, performance, and winning. We believe in what we do and the pistons we make. We love providing prosperity to our employees and reliable mobility to our customers. We love the communities we serve and to be part of an industry that values the responsible use/reuse of our resources.

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