{"product_id":"wiseco-pk1900-yamaha-yz450f-2014-2017-12-5-1-compression-ratio-piston-kit","title":"WISECO PK1900 Yamaha YZ450F 2014-2017 12.5:1 Compression Ratio Piston Kit","description":"Contains all the necessary components for overboring or rebuilding your top end\u003cbr\u003e\u003cbr\u003eFeature forged pistons, rings, wrist pins, circlips and top end gasket set\n\u003cp\u003eUpgrade the performance and rebuild potential of your Yamaha YZ450F with the WISECO PK1900 piston kit. Designed for 2014–2017 Yamaha YZ450F models, this kit features a 12.5:1 compression ratio to support responsive engine performance and reliable power delivery when properly matched to the motorcycle’s engine setup.\u003c\/p\u003e\n\u003cp\u003eWISECO is known for producing high-quality performance engine components, and the PK1900 kit is built for riders and technicians seeking a dependable replacement or performance-oriented piston solution. The kit format helps simplify installation by grouping the necessary piston components together for an efficient engine rebuild. Verify model-year compatibility, clearance requirements, and engine specifications before installation.\u003c\/p\u003e\n\u003cp\u003eWhether used for routine engine service, race-bike preparation, or a performance rebuild, the WISECO PK1900 helps restore combustion efficiency and maintain the strong throttle response expected from the Yamaha YZ450F platform. Professional installation is recommended, including proper measurement, lubrication, torque procedures, and break-in according to the motorcycle manufacturer’s and component supplier’s guidelines.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: WISECO\u003c\/li\u003e\n\u003cli\u003ePart Number: PK1900\u003c\/li\u003e\n\u003cli\u003eApplication: Yamaha YZ450F model years 2014–2017\u003c\/li\u003e\n\u003cli\u003eCompression Ratio: 12.5:1\u003c\/li\u003e\n\u003cli\u003eProduct Type: Piston kit\u003c\/li\u003e\n\u003cli\u003ePackage Quantity: Kit\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WISECO","offers":[{"title":"Default Title","offer_id":67724292980921,"sku":"115169","price":267.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/LGF7506A7A-6BAE-49A1-803B-3EAE62A326AB.jpg?v=1791999853","url":"https:\/\/atticusgoods.com\/products\/wiseco-pk1900-yamaha-yz450f-2014-2017-12-5-1-compression-ratio-piston-kit","provider":"Atticus Goods","version":"1.0","type":"link"}