{"product_id":"wiseco-857m06640-standard-bore-piston-kit-for-ktm-dirt-bikes","title":"Wiseco 857M06640 Standard Bore Piston Kit for KTM Dirt Bikes","description":"\u003cp\u003e\u003cspan style=\"font-size: 12px\"\u003e\u003cspan style=\"font-family: lucida sans unicode, lucida grande, sans-serif\"\u003e\u003cspan style=\"font-size: 12px\"\u003e\u003cspan style=\"font-family: lucida sans unicode, lucida grande, sans-serif\"\u003e\u003cstrong\u003eWISECO ATV-DIRT BIKE PISTONS.\u003c\/strong\u003e\u003cbr\u003e*  All Wiseco 4 cycle pistons come complete with rings, wrist pins and circlips.\u003cbr\u003e* \u003cem\u003e Only Wiseco replacement ring sets can be used on Wiseco pistons.\u003c\/em\u003e\u003cbr\u003e*  All Wiseco 2 cycle pistons are supplied with rings and circlips.\u003cbr\u003e* \u003cem\u003e Wiseco 2 cycle pistons are not supplied with a wrist pin unless noted in the description.\u003c\/em\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Wiseco 857M06640 Standard Bore Piston Kit is designed for KTM dirt bike applications requiring dependable replacement engine components. Built by Wiseco, a trusted name in powersports performance, this piston kit supports consistent engine operation and helps restore proper piston performance during an engine rebuild or top-end service.\u003cbr\u003eThe standard-bore design is intended for compatible KTM engines that retain the original cylinder bore specification. This makes the Wiseco 857M06640 a practical choice for replacing a worn or damaged piston without automatically requiring cylinder machining for an oversized component. Always confirm fitment against your motorcycle’s year, model, engine specifications, and service requirements before installation.\u003cbr\u003eSupplied as a kit, the Wiseco 857M06640 provides a coordinated piston replacement solution for dirt bike maintenance and performance work. Proper installation should follow the KTM service manual and Wiseco instructions, including inspection of the cylinder, piston clearance, rings, wrist pin, circlips, and related components. Careful preparation and correct break-in procedures help support reliable service life and consistent performance.\u003cbr\u003eWhether used for routine top-end maintenance or a complete engine refresh, this Wiseco standard piston kit is engineered for riders, technicians, and rebuilders seeking a dependable replacement for compatible KTM dirt bikes. Verify all application details before ordering to ensure the kit matches the intended engine configuration.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBrand: Wiseco\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePart Number: 857M06640\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eApplication: Compatible KTM dirt bike engine applications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBore Type: Standard bore replacement\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eProduct Type: Piston kit\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUnit of Measure: Kit\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eService Use: Suitable for top-end rebuilds and piston replacement\u003c\/li\u003e\u003c\/ul\u003e","brand":"WISECO","offers":[{"title":"Default Title","offer_id":44864824672298,"sku":"857M06640","price":189.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/2323p4_76158cc5-d73e-4192-8ecf-a77983417af4.jpg?v=1789685932","url":"https:\/\/atticusgoods.com\/products\/wiseco-857m06640-standard-bore-piston-kit-for-ktm-dirt-bikes","provider":"Atticus Goods","version":"1.0","type":"link"}