{"product_id":"cylinder-full-kit-81mm-yamaha-wr-yz-250-14-18-athena-p400485100050-276cc-big-bore-piston-included","title":"CYLINDER FULL KIT 81MM YAMAHA WR\/YZ 250 14-18, ATHENA P400485100050 276CC BIG BORE, (Piston included)","description":"\u003cp\u003eATHENA Big Bore Cylinder Kit Ø 81 mm, 276 cc - P400485100050 (Includes Piston)\u003c\/p\u003e \u003cp\u003eDescription\u003c\/p\u003e \u003cp\u003eAthena  has been constantly investing in cylinder aftermarket replacement parts  for more than ten years, to improve their production and performance.  All the cylinders are entirely engineered in Italy by Athena’s R\u0026amp;D  Department which has a strong internal know-how and cutting-edge tools  to design and test each piece. They are coated with motor-nicksil, a  nickel-silicon coating developed by Athena to obtain smoothness and  optimal wear resistance.\u003c\/p\u003e \u003cp\u003eAthena’s cylinder kits and its components are recognized worldwide for their performance, durability and reliability.\u003c\/p\u003e \u003cp\u003eAthena’s  Big Bore Cylinder Kits guarantees an increase in performance that can  be observed along the power curve, keeping the reliability at the same  level of the original components.\u003c\/p\u003e \u003cp\u003eThe kit includes the  high-quality aluminum cylinder with increased bore, the complete piston  with the piston pin and rings, and all the necessary gaskets.\u003c\/p\u003e \u003cp\u003eAll the components of the kit have been developed to withstand the  highest temperatures, pressures and stresses and have been validated by  Athena technicians with severe bench and road tests.\u003c\/p\u003e \u003cp\u003eThis cylinder kit can be installed without making any changes to the engine crankcase.\u003c\/p\u003e \u003cp\u003eCAUTION!  All Athena products must be used in compliance with the specific  national regulations of the member state where it is being marketed or  sold. Athena declines all responsibility for any improper use.\u003c\/p\u003e \u003cp\u003eTechnical features\u003c\/p\u003e \u003cul\u003e \u003cli\u003eBore Diameter (mm)  81.00\u003c\/li\u003e \u003cli\u003eCompression Ratio  13.6:1\u003c\/li\u003e \u003cli\u003eDisplacement (cc)  276\u003c\/li\u003e \u003cli\u003eNet Weight (Kg)  1.38\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003ePartner Cross Reference code and Optional Parts\u003c\/p\u003e \u003cul\u003e \u003cli\u003eS4F08100005A Forged Piston 80,95\u003c\/li\u003e \u003cli\u003eS4F08100005B Forged Piston 80,96\u003c\/li\u003e \u003cli\u003eP400485160192 Gaskets Kit For Athena Cylinder Kit\u003c\/li\u003e \u003cli\u003eS41316296 Rings\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e  \u003c\/p\u003e \u003cp\u003eVehicle compatibility\u003c\/p\u003e \u003cul\u003e \u003cli\u003eYAMAHA WR F 250 cc 2015\/2018\u003c\/li\u003e \u003cli\u003eYAMAHA YZ F 250 cc 2014\/2018\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e\u003cp\u003e  \u003c\/p\u003e","brand":"ORO2U","offers":[{"title":"Default Title","offer_id":57138751242613,"sku":"56-K170.81.KIT","price":674.13,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5011\/6136\/files\/stock51973_1.jpg?v=1778201540","url":"https:\/\/www.smxoffroad.com\/products\/cylinder-full-kit-81mm-yamaha-wr-yz-250-14-18-athena-p400485100050-276cc-big-bore-piston-included","provider":"SMXOFFROAD Ltd","version":"1.0","type":"link"}