{"product_id":"athena-cylinder-kit-big-bore-102mm-bore-for-yamaha-yz450f-2020-2022","title":"Athena Cylinder Kit Big Bore 102mm Bore For Yamaha YZ450F 2020-2022","description":"\u003cbr\u003e \u003cp\u003e\u003cstrong\u003eA powerful engine with added performance\u003c\/strong\u003e: Athena is pleased to present the new \u003cstrong\u003ebig bore cylinder kit\u003c\/strong\u003e, developed for \u003cstrong\u003eYamaha YZ 450 F 2020-2022\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCompletely designed in Italy by the R\u0026amp;D department\u003c\/strong\u003e, this kit is an aftermarket solution that significantly boosts \u003cstrong\u003etorque and power\u003c\/strong\u003e without compromising the motorcycle's \u003cstrong\u003eefficiency\u003c\/strong\u003e and \u003cstrong\u003esafety\u003c\/strong\u003e. The kit only includes Athena's top-\u003cstrong\u003equality\u003c\/strong\u003e components: an aluminum cylinder with nickel-plated cylinder walls, a forged piston for maximum resistance, and a gasket set manufactured using a state-of-the-art process.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eAfter several prototypes and quality checks, the cylinder kit was tested under extreme conditions on the \u003cstrong\u003eDyno\u003c\/strong\u003e and the \u003cstrong\u003etrack\u003c\/strong\u003e. The result is a \u003cstrong\u003ereliable kit\u003c\/strong\u003e that delivers explosive power at low, medium and high revs.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe Big Bore cylinder kit for Yamaha YZ 450 F 2020\/2022 can be installed \u003cstrong\u003ewithout any crankcase machining\u003c\/strong\u003e despite the increased size.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTECHNICAL FEATURES\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Yamaha YZ 450 F 2020-2022 engine is identical in regard to it's compactness and lightweight feel. Along with the new Athena Big Bore cylinder kit, it boasts of excellent torque and power performance, delivering \u003cstrong\u003eover six hp\u003c\/strong\u003e more than the original cylinder kit.\u003c\/p\u003e\u003cp\u003eTo achieve these results, Athena engineers designed top-quality precision components:\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBIG BORE ALUMINUM CYLINDER\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBesides modifying the cylinder following Yamaha's overhaul of the YZ 450 F engines after 2020, which changed the shape and inclination of the cylinder along with the oil passages, Athena engineers adjusted the machining to deliver a significant increase in the bore to Ø102 mm.\u003c\/p\u003e\u003cp\u003eDespite the increased size, the R\u0026amp;D department has designed this kit \u003cstrong\u003ewithout having to bore the crankcases and with no additional machining required\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003eProduced by \u003cstrong\u003egravity casting\u003c\/strong\u003e and a \u003cstrong\u003eheat treat process\u003c\/strong\u003e, designed to \u003cstrong\u003eimprove\u003c\/strong\u003e its \u003cstrong\u003emechanical characteristics\u003c\/strong\u003e, the Athena cylinder ensures \u003cstrong\u003emaximum resistance\u003c\/strong\u003e even at the highest temperatures. The liner is designed to ensure a \u003cstrong\u003epremium smooth finish\u003c\/strong\u003e lasting a lifetime, due to a special coating in nickel and silicon carbides.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHIGH-QUALITY FORGED PISTON\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDesigned by Athena engineers, who studied the cylinder and created a system that outperforms the original. The piston delivers a \u003cstrong\u003esuperior\u003c\/strong\u003e \u003cstrong\u003epower explosion\u003c\/strong\u003e at low to medium revs and at high engine speeds. The results, which also showed a marked \u003cstrong\u003eincrease\u003c\/strong\u003e in \u003cstrong\u003etorque\u003c\/strong\u003e and \u003cstrong\u003ecompression ratio\u003c\/strong\u003e, came from bench and track tests. \u003c\/p\u003e\u003cp\u003eManufactured by reverse extrusion, using high-precision technology, this \u003cstrong\u003eforged piston\u003c\/strong\u003e delivers \u003cstrong\u003eideal flow \u003c\/strong\u003eand features \u003cstrong\u003epolished profiles for perfect front flame amplification\u003c\/strong\u003e. \u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003esegments\u003c\/strong\u003e provide an optimized tangential load for a \u003cstrong\u003ecorrect balance between lubrication and sealing\u003c\/strong\u003e, while the \u003cstrong\u003episton pin\u003c\/strong\u003e comes in high-quality \u003cstrong\u003ealloy steel \u003c\/strong\u003efor maximum resistance.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eITALIAN-MADE GASKET SET\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe kit contains the gaskets required to install the cylinder kit\u003c\/strong\u003e, including the cylinder head gasket and base gasket, redesigned by Athena engineers to fit the new Yamaha cylinder oil passages. \u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003erubber-coated metal base gasket\u003c\/strong\u003e features \u003cstrong\u003esilicon creasing \u003c\/strong\u003ein critical areas on its surface that R\u0026amp;D engineers identified during the design phase. The creasing is near the crankcase joints and is ideal for \u003cstrong\u003epreventing\u003c\/strong\u003e liquid \u003cstrong\u003eleakage\u003c\/strong\u003e. \u003c\/p\u003e\u003cp\u003eIn contrast, the \u003cstrong\u003eMLS\u003c\/strong\u003e (Multi-Layer Steel gasket) \u003cstrong\u003ehead gasket\u003c\/strong\u003e is constructed with three blades: the outer blades are in rubberized sheet metal, while the central one is in AISI301 stainless steel to \u003cstrong\u003ewithstand high levels of compression\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e\u003cem\u003eATTENTION! 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\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cstrong\u003e\u003cp\u003eDescription:\u003c\/p\u003e\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eImpressive power surge and better torque, same reliability as the original components\u003c\/li\u003e\n\u003cli\u003eMaximum durability and smoothness guaranteed by a special nickel and silicon treatment on the cylinder liner\u003c\/li\u003e\n\u003cli\u003eForged piston with self-lubricating and anti-seizing coating\u003c\/li\u003e\n\u003cli\u003eMade in Italy gaskets developed with the most advanced technologies to ensure maximum tightness even at high temperatures and pressures\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eBrand: \u003c\/strong\u003eAthena\u003cbr\u003e\u003cstrong\u003ePart Number: \u003c\/strong\u003eP400485100092\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eYamaha YZ450F 2020-2022\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eNote: Image is for reference only, actual product may vary slightly.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Athena","offers":[{"title":"Default Title","offer_id":45159772520527,"sku":"P400485100092-ATHENA-0426-ATH","price":876.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/7120\/7759\/files\/P400485100092_37fed280-1763-48c4-8833-94588a8624a5.jpg?v=1777656859","url":"https:\/\/lionparts.com\/products\/athena-cylinder-kit-big-bore-102mm-bore-for-yamaha-yz450f-2020-2022","provider":"Lionparts Powersports","version":"1.0","type":"link"}