{"product_id":"prox-piston-kit-xl-xr500-79-82-8-6-1-90-00mm","title":"Prox Piston Kit Xl\/xr500 `79-82 8.6:1 (90.00mm)","description":"ProX pistons are precision machined on the latest, state of the art CNC equipment. The same low-expansion, low-friction piston alloy is used as is used for all major Japanese engine manufacturers. ProX Piston Kits are a first class solution to replace the original piston in your Motorcycle, Scooter, Moped, ATV, Personal Watercraft, etc. \nCoated for ultimate performance\nMost of the ProX pistons come with a coating. Our OEM style Tin coated pistons assist the wear in process when you just started the bike. We have developed a new skirt coating that not only assists the wear in process, but also helps reducing friction after the wear in. The black coating is made from a delicate mix of materials and will increase performance.   Product specifications    Attribute Value     Additional Info Forged Piston   Bore - Actual 90.00 mm   Bore - Oversize 1.00 mm   Bore - Standard 89.00 mm   Boss Space In 27.30 mm   Compression Height 18.50 mm   Compression Ratio - Actual 8.6:1   Country of Origin USA   Cylinders 1   Displacement 498 cc   OEM Reference No 13101-429-003   Piston Head Type Flat   Piston Pin Hole Diameter 21.00 mm   Skirt Coating -   Stroke 80.00 mm   Total Height 58.50 mm   ","brand":"PROX","offers":[{"title":"Default Title","offer_id":54186809459034,"sku":"01.1509.100","price":227.14,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/6831\/5738\/files\/pim_4ce8f04d-8571-4699-a27c-7ceebed91fc2_1000-1000.jpg?v=1779449761","url":"https:\/\/grafiteoffroad.com\/products\/prox-piston-kit-xl-xr500-79-82-8-6-1-90-00mm","provider":"Grafite Offroad","version":"1.0","type":"link"}