{"product_id":"mahle-ms-piston-set-for-small-block-chevrolet-420-cubic-inches-4-155-inch-bore-3-875-inch-stroke","title":"Mahle MS Piston Set for Small Block Chevrolet 420 Cubic Inches - 4.155 Inch Bore, 3.875 Inch Stroke","description":"\u003cp\u003eThe Mahle MS Piston Set designed for Small Block Chevrolet engines offers high-performance components for 420 cubic inch applications. Crafted with a bore diameter of 4.155 inches and a stroke of 3.875 inches, these pistons are engineered to deliver reliable power and durability. The set includes pistons with a 0.927-inch pin diameter, a compression ratio of approximately 10.1:1, and a combustion chamber volume of -22.0cc, making them suitable for performance and rebuild projects.\u003cbr\u003eConstructed with advanced coatings of phosphate and Grafal, these pistons provide enhanced wear resistance and reduced friction, ensuring longevity and consistent engine operation. The pistons are made from 4032 aluminum, a material known for its strength-to-weight ratio, optimizing engine efficiency and responsiveness. Each piston weighs approximately 447 grams, balancing weight and durability for high-stress conditions.\u003cbr\u003eThis set includes eight pistons, ideal for complete engine builds or rebuilds, and is designed to meet the demands of performance enthusiasts. The set requires acknowledgment of carburetor compatibility and is not CARB-approved, making it suitable for off-road or racing applications where emissions compliance is not mandatory. Designed with Prop 65 compliance, the Mahle MS pistons ensure safety and quality standards are met for automotive use.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eDesigned for Chevrolet Small Block engines with 420 cubic inches displacement\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBore diameter: 4.155 inches for optimal power and efficiency\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStroke length: 3.875 inches for high-performance output\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePiston weight: approximately 447 grams for durability and balance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCoatings: Phosphate and Grafal for wear resistance and reduced friction\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMaterial: 4032 aluminum alloy for strength and lightweight characteristics\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes set of 8 pistons suitable for complete engine rebuilds\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompression ratio: approximately 10.1:1 for versatile performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePin diameter: 0.927 inches compatible with standard small block connecting rods\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned with -22.0cc combustion chamber volume for performance tuning\u003c\/li\u003e\u003c\/ul\u003e","brand":"Mahle","offers":[{"title":"Default Title","offer_id":46981934907591,"sku":"mhl930211355","price":977.97,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/3307fd81aa46f65dee205dcd4708a4ef_3ad5c999-d468-4c6a-afda-1584d4e70faf.jpg?v=1786487936","url":"https:\/\/mainstreeteshop.com\/products\/mahle-ms-piston-set-for-small-block-chevrolet-420-cubic-inches-4-155-inch-bore-3-875-inch-stroke","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}