{"product_id":"motorshop-74-inch-knucklehead-cylinder-piston-kit-for-harley-davidson-fl-1941-1947","title":"Motorshop 74 Inch Knucklehead Cylinder Piston Kit For Harley Davidson FL","description":"\u003cdiv\u003e\n\u003ch1\u003eMotorshop 74 Inch Knucklehead Cylinder Piston Kit For Harley Davidson FL\u003c\/h1\u003e\n\u003cp\u003eA replacement 74 inch Knucklehead cylinder and piston kit, honed and pre-fitted with 8.5:1 compression cast pistons and rings. Set bears no factory markings and is designed for authentic restoration and reliable performance on Harley Davidson FL models from 1941 to 1947.\u003c\/p\u003e\n\u003cp\u003eThese cylinders are ready to run and require a proper break-in procedure per your shop manual. Designed for stock stroke applications, they feature a bore size of approximately 3.438 inches in diameter. The cast iron construction provides uniform piston-to-wall clearance of about.0025 to.003 inches, supporting steady performance with minimized piston slap and wear. The kit is without the lip on top to match original Knucklehead specifications, and it does not include the head base gasket (order separately).\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eBore: approximately 3.438 inches diameter\u003c\/li\u003e \u003cli\u003eMaterial: cast iron\u003c\/li\u003e \u003cli\u003ePiston-to-wall clearance: about.0025 to.003 inches\u003c\/li\u003e \u003cli\u003eTop lip: without lip on top\u003c\/li\u003e \u003cli\u003eIncludes rocker arm end play shims:.005,.007,.015 inches\u003c\/li\u003e \u003cli\u003eIncludes shims for rocker arm end play adjustment\u003c\/li\u003e \u003cli\u003eMade in Taiwan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFits Harley Davidson FL models from 1941 through 1947 and supports an authentic look and function for vintage engines.\u003c\/p\u003eReplacement 74 inch Knucklehead cylinder and piston kit are honed and pre fitted with 8.5:1 compression cast pistons and rings. Set does not feature any factory markings.\n\u003cp\u003eThe Motorshop 74 Inch Knucklehead Cylinder Piston Kit is designed for authentic restoration and reliable performance on Harley Davidson FL models from 1941 to 1947. These cylinders are ready to run and require a proper break-in procedure, which should be followed according to your specific shop manual. Crafted for stock stroke applications, the cylinders feature a bore size of approximately 3.438 inches diameter, ensuring a precise fit for vintage engines. The cylinders are without the lip on top, which is typical for these models, and the kit does not include the head base gasket, which must be ordered separately. All cast iron cylinders in this kit share a piston-to-wall clearance of approximately.0025 to.003 inches, providing optimal performance with minimal piston slap and wear. The kit is suitable for those seeking a high-quality replacement that maintains the original look and function of their vintage engine.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eReady to run cylinders requiring proper break-in as per shop manual\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eDesigned for stock stroke only with a bore size of approximately 3.438 inches\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eCast iron construction with uniform piston-to-wall clearance of.0025 to.003 inches\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eWithout the lip on top, matching original specifications for 1941-1947 Knuckleheads\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eCompatible with Harley Davidson FL models from 1941 through 1947\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eIncludes shims for rocker arm end play adjustment, with available sizes:.005,.007,.015 inches\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eMade in Taiwan with high-quality craftsmanship\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eDoes not include head base gasket, order separately\u003c\/li\u003e\u003c\/ul\u003e\n\u003cbr\u003e\nFitment:\u003cbr\u003e\nHarley Davidson FL 1941\u003cbr\u003e\nHarley Davidson FL 1942\u003cbr\u003e\nHarley Davidson FL 1943\u003cbr\u003e\nHarley Davidson FL 1944\u003cbr\u003e\nHarley Davidson FL 1945\u003cbr\u003e\nHarley Davidson FL 1946\u003cbr\u003e\nHarley Davidson FL 1947\u003c\/div\u003e","brand":"Motorshop","offers":[{"title":"Default Title","offer_id":44652711870506,"sku":"11-2601","price":506.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/11-2601a.jpg?v=1785877620","url":"https:\/\/atticusgoods.com\/products\/motorshop-74-inch-knucklehead-cylinder-piston-kit-for-harley-davidson-fl-1941-1947","provider":"Atticus Goods","version":"1.0","type":"link"}