{"product_id":"mcs944780","title":"KB Performance Piston Piston Set Std – 1986–2022 XL883 (883 to 1200 Conversion)","description":"\u003ch2\u003eKB Performance Piston Piston Set Std – 1986–2022 XL883 (883 to 1200 Conversion)\u003c\/h2\u003e\n\u003cp\u003e883-1200 conversion forged piston set. 10.1 CR with 51cc head. Works with unmodified 883 heads. Piston weight 337gr. Piston pin weight 97gr. Piston pin dia. .791\" \/ offset. Head type: Dish with +9.8cc. Compression height 1.280\". Bore 3.498\". Stroke 3.812\". Rod length 6.926\". Cyl. length 4.650\". All KB forged pistons are made from 4032 alloy; a 11% silicon alloy that is formed in a forging press. Forging aluminum gives a superior strength and structural integrity on a molecular level; after which it is fully machined. 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. Although 4032 has a low expansion rate; it is higher than the cast Hypereutectic. Therefore forged KB pistons will require about .001\" wider piston to wall clearance. Pistons are sold as sets; complete with wrist pin retaining rings; wrist pins and piston rings. Please note that all KB forged pistons come equipped with offset wrist pins \/ piston pins. There is a front and rear section on the piston and it is necessary to install it in the correct way. Please refer to the installation instructions; as provided with each piston set; prior to installation. Note: For 04-up XL models 1200cc cylinders must be used. The stock 04-up 883 cylinder liners are too thin for boring to 1200 size.\u003c\/p\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003e86-22 XL883 (883 to 1200 conversion) (NU)\u003c\/p\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e KB Performance Piston\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e MOTOR PARTS \u0026gt; PISTONS AND RINGS KITS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit:\u003c\/strong\u003e SET\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct code:\u003c\/strong\u003e 944780\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KB-Performance Piston","offers":[{"title":"Default Title","offer_id":57378703966595,"sku":"MCS944780","price":300.31,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1329\/4265\/files\/944780k_0664bcfe-5e34-4e65-8865-a227bf1b5cc4.jpg?v=1775575518","url":"https:\/\/hogparts.com\/products\/mcs944780","provider":"Hogparts UK Ltd","version":"1.0","type":"link"}