{"product_id":"wiseco-pk1241-top-end-kit-standard-bore-77-00mm-12-7-1-compression","title":"Wiseco PK1241 Top End Kit - Standard Bore 77.00mm, 12.7:1 Compression","description":"Bore: 77.00mm\u003cbr\u003e Compression: 12.7:1 Compression\u003cbr\u003e Sizing: Standard Bore\u003cbr\u003e\u003cbr\u003eSPECIFICATIONS. \u003cbr\u003eDisplacement: 250cc. \u003cbr\u003eBore - Standard: 77.00mm. \u003cbr\u003eBore - Actual: 77.00mm. \u003cbr\u003eBore - Oversize: STD. \u003cbr\u003eStroke: 53.6mm. \u003cbr\u003eCompression Ratio - Actual: 12.7:1. \u003cbr\u003eNote: Nikasil Bore. \u003cbr\u003eITEM CONTENTS. \u003cbr\u003e4872M07700 - Yamaha YZ250F 01-04 12.7:1 CR 7700XU. \u003cbr\u003e7700XU - 77.00 mm Ring Set .9 X .8 X 1.5mm. \u003cbr\u003eCW16 - ROUND WIRE PIN LOCKS 16MM (PAIR). \u003cbr\u003eS742 - PistonPin 16 x 41.91mm NonChromed SW. \u003cbr\u003eW5921 - TopEnd Gskt Kit Yamaha YZ\/WR250F 01-13.\u003cbr\u003e \u003cbr\u003e Contains all the necessary components for overboring or rebuilding your top end. Feature forged pistons, rings, wrist pins, circlips and top end gasket set.\u003cbr\u003e\u003cbr\u003eVehicle Fitment:\u003cbr\u003e\u003cbr\u003e2001-2004 Yamaha WR250F\u003cbr\u003e 2001-2004 Yamaha YZ250F","brand":"Wiseco","offers":[{"title":"Default Title","offer_id":44006276956282,"sku":"","price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.powersportsuperstore.com\/products\/wiseco-pk1241-top-end-kit-standard-bore-77-00mm-12-7-1-compression","provider":"Powersport Superstore","version":"1.0","type":"link"}