{"product_id":"kb-performance-1340-shovel-forged-piston-kit-std-for-harley-davidson","title":"KB Performance, 1340 Shovel Forged Piston Kit. Std For Harley Davidson","description":"Forged piston set.\u003cbr data-mce-fragment=\"1\"\u003e 9.0:1 CR with 112cc head.\u003cbr data-mce-fragment=\"1\"\u003e Piston weight 416gr.\u003cbr data-mce-fragment=\"1\"\u003e Piston pin weight 97gr.\u003cbr data-mce-fragment=\"1\"\u003e Piston pin dia.\u003cbr data-mce-fragment=\"1\"\u003e .791\" \/ offset.\u003cbr data-mce-fragment=\"1\"\u003e Head type: Dome with -52.7cc.\u003cbr data-mce-fragment=\"1\"\u003e Compression height 1.285\".\u003cbr data-mce-fragment=\"1\"\u003e Bore 3.498\".\u003cbr data-mce-fragment=\"1\"\u003e Stroke 4.250\".\u003cbr data-mce-fragment=\"1\"\u003e Rod length 7.440\".\u003cbr data-mce-fragment=\"1\"\u003e Cyl. length 5.330\".\u003cbr data-mce-fragment=\"1\"\u003e All KB forged pistons are made from 4032 alloy, a 11% silicon alloy that is formed in a forging press.\u003cbr data-mce-fragment=\"1\"\u003e Forging aluminum gives a superior strength and structural integrity on a molecular level, after which it is fully machined.\u003cbr data-mce-fragment=\"1\"\u003e The combination of this alloy and the forging process allows the piston to flex under detonation, or pre-ignition, giving the best resistance to cracking.\u003cbr data-mce-fragment=\"1\"\u003e Although 4032 has a low expansion rate, it is higher than the cast Hypereutectic.\u003cbr data-mce-fragment=\"1\"\u003e Therefore forged KB pistons will require about .001\" wider piston to wall clearance.\u003cbr data-mce-fragment=\"1\"\u003e Pistons are soldered as sets, complete with wrist pin retaining rings, wrist pins and piston rings.  \u003cbr data-mce-fragment=\"1\"\u003eNote: All KB forged pistons come equipped with offset wrist pins \/ piston pins.\u003cbr data-mce-fragment=\"1\"\u003e There is a front and rear section on the piston and it is necessary to install it in the correct way.\u003cbr data-mce-fragment=\"1\"\u003e Please refer to the installation instructions, as provided with the piston set, prior to installation.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e Fits: \u0026gt; 79-84 1340cc Shovel (NU)","brand":"KB Performance Piston","offers":[{"title":"Default Title","offer_id":40438637428821,"sku":"MC944796","price":350.17,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1606\/2595\/products\/944796k.jpg?v=1669723980","url":"https:\/\/california-motorcycles.com\/en\/products\/kb-performance-1340-shovel-forged-piston-kit-std-for-harley-davidson","provider":"California Motorcycles","version":"1.0","type":"link"}