{"product_id":"kb-performance-3-5-8-big-bore-piston-kit-020","title":"Kb Performance, 3 5\/8\" Big Bore Piston Kit. +.020\"","description":"\u003cp\u003e3-5\/8\" big bore piston set. Used with 3 5\/8\" big bore cylinders with 5.330\" (stock) to 5.530\" (+.200\") length. Use with 4-1\/4\" stock stroke (88\"); 4-1\/2\" (93\"); 4-5\/8\" (96\") to 4-3\/4\" (98\") stroker flywheels.  10.0:1 CR. Piston weight 385gr. Piston pin weight 97gr.  Head type: Dome \/ Dome -57cc.  Compression height 1.285\" \/ Bore 3.625\" (3 5\/8\").  Stroke 4.250\" to 4.750\" (4-1\/4\" to 4-3\/4\").  Rod length 7.440\" \/ Cyl. length 5.330\" (Std) to 5.530\" (+.200\").  Comes with T6 heat treated 390 Hypereutectic cast pistons with 16% silicone levels which enables running a very tight clearance for longevity and hardly any piston noise.   Note: Top compression ring will need additional clearance. See instructions. Note: 5.330\" cylinders can be used with stock 4-1\/4\" stroke. Longer strokes require correct length longer cylinders or stroker plates to achieve the desired compression ratio.  Note: In any and all applications the technician must be able to judge components for their suitability in combination with the other engine components; prior to installation.\u003c\/p\u003e","brand":"Kb Performance Piston","offers":[{"title":"Default Title","offer_id":50010530677064,"sku":"944686","price":367.9,"currency_code":"EUR","in_stock":true}],"url":"https:\/\/holydeath.com\/products\/kb-performance-3-5-8-big-bore-piston-kit-020","provider":"Holy Death Motorcycle Co.","version":"1.0","type":"link"}