{"product_id":"yamaha-raptor-125-2011-2013-57-4mm-big-bore-kit-00105-eng","title":"Yamaha Raptor 125 2011–2013 57.4mm Big Bore Cylinder Piston Kit","description":"\u003ch2\u003eYamaha Raptor 125 2011–2013 57.4mm Big Bore Cylinder Piston Kit\u003c\/h2\u003e\n\n\u003cp\u003eBrand new aftermarket big-bore cylinder and piston kit for compatible Yamaha-derived 125cc four-stroke engines using the matching cylinder layout.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specification\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNominal bore: 57.4 mm\u003c\/li\u003e\n\u003cli\u003ePiston pin: 15 mm\u003c\/li\u003e\n\u003cli\u003eCooling: Air-cooled\u003c\/li\u003e\n\u003cli\u003eEngine type: Single-cylinder, four-stroke\u003c\/li\u003e\n\u003cli\u003eBig-bore application: commonly marketed as a “150cc” conversion\u003c\/li\u003e\n\u003cli\u003eCalculated displacement on a 54.0 mm stroke: approximately 139.7cc\u003c\/li\u003e\n\u003cli\u003eCondition: Brand New aftermarket upgrade\/rebuild part\u003c\/li\u003e\n\u003cli\u003eSKU: 00105-ENG\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eYamaha YFM125 Raptor 125 — 2011–2013, 5VL-E1310-00 \/ 5VL-E1310-10 cylinder family\u003c\/li\u003e\u003c\/ul\u003e\n\n\u003ch3\u003eReference Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStandard Yamaha cylinder family reference: 5VL-E1310-00\u003c\/li\u003e\n\u003cli\u003eLater\/superseding standard cylinder reference: 5VL-E1310-10\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese Yamaha references identify the standard cylinder family only; they are not the manufacturer part number of this aftermarket big-bore kit.\u003c\/p\u003e\n\n\u003ch3\u003eImportant Fitment Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eYamaha OEM parts catalogues use the same 5VL-family standard cylinder on the 2011–2013 Raptor 125.\u003c\/li\u003e\n\u003cli\u003eVerify ATV-specific intake, exhaust and fuelling requirements after the bore increase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cp\u003eThe original listing confirms a cylinder barrel\/block and matching piston. Additional rings, piston pin, clips or gaskets should only be treated as included if they are supplied with the physical kit shown in the product photographs.\u003c\/p\u003e\n\n\u003ch3\u003eBefore Ordering\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the original cylinder is from the matching 5VL-style family\u003c\/li\u003e\n\u003cli\u003eConfirm a 15 mm piston pin\u003c\/li\u003e\n\u003cli\u003eCompare cylinder height, lower spigot, head-stud spacing and cam-chain tunnel\u003c\/li\u003e\n\u003cli\u003eCompare the oil passages and base\/head gasket profiles\u003c\/li\u003e\n\u003cli\u003eCheck crankcase opening clearance for the larger cylinder liner\/spigot\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFuelling \u0026amp; Installation\u003c\/h3\u003e\n\u003cp\u003eA big-bore conversion changes airflow, compression and fuelling requirements. Carburettor jetting or fuel-injection calibration may require adjustment. Correct piston-ring orientation, cam timing, valve clearances, gasket preparation and running-in procedure are essential. Professional installation is recommended.\u003c\/p\u003e\n\n\u003ch3\u003eRoad-Use Note\u003c\/h3\u003e\n\u003cp\u003eIncreasing engine capacity can affect registration, insurance, licence entitlement and emissions compliance. The owner is responsible for confirming the legal requirements applicable to the motorcycle or ATV.\u003c\/p\u003e\n\n\u003ch3\u003eShipping Estimate\u003c\/h3\u003e\n\u003cp\u003eShopify shipping estimate: approximately 2.2 kg packed, with estimated parcel dimensions of 22 x 20 x 15 cm. Replace these estimates with measured packed weight and dimensions when available.\u003c\/p\u003e","brand":"Unbranded","offers":[{"title":"Default Title","offer_id":57504625197431,"sku":"00105-ENG","price":36.0,"currency_code":"SHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0528\/8771\/6007\/files\/20260929_085636.jpg?v=1790774912","url":"https:\/\/www.motomaniauk.com\/products\/yamaha-raptor-125-2011-2013-57-4mm-big-bore-kit-00105-eng","provider":"Moto Mania UK","version":"1.0","type":"link"}