{"title":"Athena Cylinder","description":"","products":[{"product_id":"athena-complete-cylinder-standard-bore-zuiger-kit-96mm-450cc-honda-crf-450r-rx2017-2025","title":"Athena Complete cylinder standard Bore + zuiger kit 96mm ( 450cc ) Honda CRF 450R\/RX2017-2025","description":"\u003ch2\u003eTechnical features\u003c\/h2\u003e\r\n\r\n\r\n\r\n\r\n\r\n\r\nBore Diameter (mm)\r\n96.00\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nCompression Ratio\r\n12.0:1\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nDisplacement (cc)\r\n450.00\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nLine\r\nEnduro\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nNet Weight (Kg)\r\n1.70\r\n\r\n\r\n\r\n\r\n\r\n","brand":"Pro Moto Parts","offers":[{"title":"Default Title","offer_id":53324804981074,"sku":null,"price":495.83,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1039\/7994\/2226\/files\/P400210100059.jpg?v=1777637283"},{"product_id":"athena-complete-cylinder-standard-bore-zuiger-kit-96mm-450cc-honda-crf-450r-2002-2008","title":"Athena Complete cylinder standard Bore + zuiger kit 96mm ( 450cc ) Honda CRF 450R 2002-2008","description":"\u003ch2\u003eTechnical features\u003c\/h2\u003e\r\n\r\n\r\n\r\n\r\n\r\n\r\nBore Diameter (mm)\r\n96.00\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nCompression Ratio\r\n12.0:1\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nDisplacement (cc)\r\n450.00\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nLine\r\nEnduro\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nNet Weight (Kg)\r\n1.70\r\n\r\n\r\n\r\n\r\n\r\n","brand":"Pro Moto Parts","offers":[{"title":"Default Title","offer_id":53324805177682,"sku":null,"price":495.83,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1039\/7994\/2226\/files\/P400210100002.png?v=1777637289"},{"product_id":"athena-zuiger-b-maat-96-97-voor-standaard-cylinder-husqvarna-te-450-2006-2010-tc-450-2006-2010","title":"Athena zuiger ( B Maat 96,97 ) voor standaard cylinder Husqvarna TE 450 2006-2010 \u0026 TC 450 2006-2010","description":"\r\n\r\n\r\n\r\n\r\n\r\n\r\n  Model\r\n  BJ\r\n\r\n\r\n SM 450 R 8\r\n 2008\r\n\r\n\r\n SM 450 R 9\r\n 2009\r\n\r\n\r\n SM 450 R A\r\n 2010\r\n\r\n\r\n TC 450 6\r\n 2006\r\n\r\n\r\n TC 450 7\r\n 2007\r\n\r\n\r\n TC 450 8\r\n 2008\r\n\r\n\r\n TC 450 9\r\n 2009\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n  Model\r\n  BJ\r\n\r\n\r\n TC 450 A\r\n 2010\r\n\r\n\r\n TE 450 6\r\n 2006\r\n\r\n\r\n TE 450 7\r\n 2007\r\n\r\n\r\n TE 450 8\r\n 2008\r\n\r\n\r\n TE 450 9\r\n 2009\r\n\r\n\r\n TE 450 A\r\n 2010\r\n\r\n\r\n\r\n\r\n\r\n\r\n","brand":"Pro Moto Parts","offers":[{"title":"Default Title","offer_id":53325209370962,"sku":null,"price":214.83,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1039\/7994\/2226\/files\/S5F08500001A.jpg?v=1777642652"},{"product_id":"athena-zuiger-b-maat-84-95-voor-big-bore-p400210100067-athena-cilinder-honda-crf-250r-2018-2024-crf-250rx-2019-2024","title":"Athena zuiger ( B Maat 84,95 ) voor big bore P400210100067 athena cilinder Honda CRF 250R 2018-2024 \u0026 CRF 250RX 2019-2024","description":"\r\n\r\n\u003ch2\u003eTechnical features\u003c\/h2\u003e\r\n\r\n\r\n\r\n\r\n\r\n\r\nBig End Pin Diameter (mm)\r\n16x9x44.3\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nBore Diameter (mm)\r\n84.95\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nCompression Height (mm)\r\n18.90\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nDisplacement (cc)\r\n289.00\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nLine\r\nEnduro\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nNet Weight (Kg)\r\n0.31\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nNumber Of Segments\r\n2\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nPiston Head Type\r\nFlat\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nPiston Pin Type\r\nBiconical\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nPiston Type\r\nForged\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nSkirt\r\nForged side relief\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\u003ch2\u003eVehicle compatibility\u003c\/h2\u003e\r\n\r\n\r\n\r\n\r\nVehicle brand\r\nHONDA\r\n\r\n\r\n\r\n\r\nVehicle model\r\nCRF R 250 cc \r\nCRF RX 250 cc \r\n\r\n\r\n\r\n\r\nVehicle version\r\n\r\nVehicle year\r\n2018\/2024\r\n2019\/2024\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nHONDA CRF R 250 cc 2018\/2024\r\n\r\n\r\nHONDA CRF RX 250 cc 2019\/2024\r\n\r\n\r\n\r\n \r\n\r\n\r\n\r\n\r\n","brand":"Pro Moto Parts","offers":[{"title":"Default Title","offer_id":53325467779410,"sku":null,"price":204.12,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1039\/7994\/2226\/files\/S5F08500001A_1326593e-b5b7-408d-8039-8a9aea43a95e.jpg?v=1777645704"},{"product_id":"athena-big-bore-cylinder-kit-o-85-mm-300-cc-yamaha-wr-250f-2020-2024-yz-250f-2019-2024","title":"Athena Big Bore Cylinder Kit Ø 85 mm, 300 cc Yamaha WR 250F 2020-2024 \u0026 YZ 250F 2019-2024","description":"\u003ch2\u003eTechnical features\u003c\/h2\u003e\r\n\r\n\r\n\r\n\r\n\r\n\r\nBore Diameter (mm)\r\n85.00\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nBore Gain (mm)\r\n+8\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nCompression Ratio\r\n13.3:1\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nDisplacement (cc)\r\n304.15\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nLine\r\nEnduro\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nNet Weight (Kg)\r\n1.67\r\n\r\n\r\n\r\n\u003ch2\u003eDescription\u003c\/h2\u003e\r\n\r\n\r\n\r\nThe standard Yamaha engine is considered one of the best in the first part of power delivery: the initial thrust is exceptionally powerful, even though it is within the medium and high steady states, and strong initial progression seems to stabilize a lot.\r\n\r\nAthena's Big Bore Extreme increases the displacement up to 304 cc, bringing the bike to have a very strong, effective and consistent engine output over the entire arc of the power delivery curve.\r\n\r\nExtensive experience in the Offroad and Racing sectors has allowed the Athena R\u0026amp;D Department to create something that was not yet present on the market: a Big Bore Cylinder Kit with Ø 85 mm steel barrel dedicated to 250cc offroad bikes for an increase of displacement never achieved before, without making any changes to the engine blocks!\r\n\r\nThe entire kit guarantees maximum performance, better delivery, greater torque at low and medium steady states, better reactivity and - at the same time - the same reliability as original parts, thanks to all the technical devices resulting from the challenge won by the Athena R\u0026amp;D team: all this is combined with the proverbial good handling of a 250cc Offroad for a simply exceptional driving experience.\r\n\r\nThe kit includes the aluminum alloy cylinder, the forged piston complete with pin and rings, and all the necessary gaskets.\r\n\r\nAthena's technical team manages the entire development and approval process of the cylinder kits. The team designs the kit elements together, and then their test facility technicians test them and validate the parts before they are used directly by drivers. The result is a combination of engine components that ensure maximum synergy with each other.\r\n\r\nMore power, more performance and more fun: are you ready to never get off your bike again?\r\n\r\nTHE CYLINDER\r\n\r\nThe cylinder with extreme Ø 85mm oversized bore is made of aluminum alloy and high silicon content.\r\n\r\nTo allow such an increase in bore while maintaining the original block, the Athena technicians decided to use a steel cylinder liner.\r\n\r\nThis cylinder liner is not inserted inside the cylinder bore with pressure, but instead, it is positioned directly in the mold through an innovative co-fusion production process. This method, studied and tested internally, makes it possible for the aluminum casting to \"embrace\" the steel, making it integral with the aluminum. This allows excellent heat transmission and an efficient mechanical grip that prevents reciprocal sliding, even after many hours of use, guaranteeing perfect union and reliability over time.\r\n\r\nThe inside of the cylinder liner is finished with a galvanic nickel-silicon coating treatment developed by Athena and subsequent polishing, to obtain maximum smoothness and optimal resistance to wear.\r\n\r\nThe winning feature of this new Athena project is to have developed a cylinder resulting from the union of two different materials, with particular attention to the design of the cylinder liner. The superior geometry of the cylinder liner was designed to ensure maximum sealing in the combustion chamber and to guarantee the right contact pressure between the components, under all conditions, avoiding pressure losses and leakage of liquids and\/or gases.\r\n\r\nPISTON KIT\r\n\r\nThe forged aluminum alloy piston is a guarantee of resistance and lightness. Furthermore, machining with latest generation CNC machines ensures perfect geometries and reduced tolerances.\r\n\r\nThe undercrown design has a fully open boxed bridged design to combine greater resistance to fatigue, lightness and better cooling of the piston crown.\r\n\r\nThe piston crown was engineered with particular care to optimize it for greater resistance, better heat dispersion and an optimization of the compression ratio to ensure greater driving elasticity and reliability over time.\r\n\r\nThe shell incorporates a molybdenum disulfide coating, which is applied by screen printing to reduce friction and noise, and improve sliding. The segments included are made in Japan out of special steel, with a chromium nitride coating applied with the PVD process, guaranteeing low friction, better smoothness, and a longer lifespan.\r\n\r\nThe gudgeon pin, specifically designed for this type of extreme application, is biconical and made of aeronautical steel alloy with a nitriding treatment with DLC \"Diamond-like carbon\" surface coating, which guarantees high hardness and low friction.\r\n\r\nGASKET KIT\r\n\r\nThe set of gaskets included in the kit, developed by Athena technicians, were specifically designed for our new aluminum cylinder with steel liner, to ensure maximum seal and durability.\r\n\r\nThe head gasket is an MLS (Multi-layer Steel) type, designed specifically to withstand increasingly higher pressures and temperatures. It was made using the latest generation laser cutting technology.\r\n\r\nThe material used is stainless steel with high elastic return, for high adaptability to the surfaces, and to guarantee an excellent, uniform seal on the whole surface. To further improve the seal capacity, it is equipped with specific raised points around the cylinder liner and the oil and water passages.\r\n\r\nTo maintain the synergy ensured by our internal design process, the cylinder base gasket is also made by laser cutting in stainless steel with a specific rubber coating.\r\n\r\nThe rubberized inserts and the raised relief around the cylinder liner are the Athena team's design response to effectively and constantly support the cylinder body subject to the closing load of the cylinder head stud bolts.\r\n\u003ch2\u003eVehicle compatibility\u003c\/h2\u003e\r\n\r\n\r\n\r\n\r\nVehicle brand\r\nYAMAHA\r\n\r\n\r\n\r\n\r\nVehicle model\r\nWR F 250 cc \r\nYZ F 250 cc \r\n\r\n\r\n\r\n\r\nVehicle version\r\n\r\nVehicle year\r\n2020\/2024\r\n2019\/2024\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nYAMAHA WR F 250 cc 2020\/2024\r\n\r\n\r\nYAMAHA YZ F 250 cc 2019\/2024\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n","brand":"Pro Moto Parts","offers":[{"title":"Default Title","offer_id":53325505560914,"sku":null,"price":611.56,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1039\/7994\/2226\/files\/P400485100073.png?v=1777646341"},{"product_id":"athena-big-bore-cylinder-kit-o-82-mm-276-cc-compressie-13-4-1-ktm-sx-f-250-2016-2022-husqvarna-fc-250-2016-2022-gas-gas-mc-250f-2021-2023","title":"Athena Big Bore Cylinder Kit Ø 82 mm, 276 cc compressie 13.4:1 KTM SX-F 250 2016-2022 \u0026 Husqvarna FC 250 2016-2022 \u0026 Gas Gas MC 250F 2021-2023","description":"","brand":"Pro Moto Parts","offers":[{"title":"Default Title","offer_id":53325521584466,"sku":null,"price":599.17,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1039\/7994\/2226\/files\/P400270100021-1.jpg?v=1777646574"},{"product_id":"athena-koppakking-set-voor-big-bore-p400210100067-athena-cilinder-honda-crf-250r-2018-2024-crf-250rx-2019-2024","title":"Athena koppakking set voor big bore P400210100067 athena cilinder Honda CRF 250R 2018-2024 \u0026 CRF 250RX 2019-2024","description":"\r\n\r\n\u003ch2\u003eDescription\u003c\/h2\u003e\r\n\r\n\r\n\r\nAthena offers the widest range of replacement engine gaskets available on the market, boasting over 40 years of experience in the field.\r\n\r\nAthena’s gasket kits are entirely engineered in Italy with a strong base of internal know-how. Each piece is produced following strict parameters imposed by manufacturers and the use of latest generation lasers guarantees perfect cutting quality.\r\nAthena performs surface treatments to compensate irregularities and follows material stress relieving processes to improve sealing in the most critical areas.\r\n\r\nThis engine gasket set includes all the gaskets needed for Athena's Big Bore Cylinder Kit.\r\n\r\nAthena’s gaskets have low moisture absorption, highest mechanical resistance, resistance to oils and gasoline, resistance to high temperatures and pressures, easy removal.\r\n\r\nFind the gasket that best suits your motorbike by consulting the compatibility tables.\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\u003ch2\u003eTechnical features\u003c\/h2\u003e\r\n\r\n\r\n\r\n\r\n\r\n\r\nNet Weight (Kg)\r\n0.09\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\u003ch2\u003eVehicle compatibility\u003c\/h2\u003e\r\n\r\n\r\n\r\n\r\nVehicle brand\r\nHONDA\r\n\r\n\r\n\r\n\r\nVehicle model\r\nCRF R 250 cc \r\n\r\n\r\n\r\n\r\nVehicle version\r\n\r\nVehicle year\r\n2018\/2023\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nHONDA CRF R 250 cc 2018\/2023\r\n\r\n\r\n\r\n\r\n\r\n\r\n","brand":"Pro Moto Parts","offers":[{"title":"Default Title","offer_id":53325627916626,"sku":null,"price":61.98,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1039\/7994\/2226\/files\/P400210160068.jpg?v=1777647821"},{"product_id":"athena-zuiger-a-maat-84-94-voor-big-bore-p400210100067-athena-cilinder-honda-crf-250r-2018-2024-crf-250rx-2019-2024","title":"Athena zuiger ( A Maat 84,94 ) voor big bore P400210100067 athena cilinder Honda CRF 250R 2018-2024 \u0026 CRF 250RX 2019-2024","description":"\r\n\r\n\u003ch2\u003eTechnical features\u003c\/h2\u003e\r\n\r\n\r\n\r\n\r\n\r\n\r\nBig End Pin Diameter (mm)\r\n16x9x44.3\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nBore Diameter (mm)\r\n84.94\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nCompression Height (mm)\r\n18.90\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nDisplacement (cc)\r\n289.00\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nLine\r\nEnduro\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nNet Weight (Kg)\r\n0.31\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nNumber Of Segments\r\n2\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nPiston Head Type\r\nFlat\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nPiston Pin Type\r\nBiconical\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nPiston Type\r\nForged\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nSkirt\r\nForged side relief\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\u003ch2\u003eVehicle compatibility\u003c\/h2\u003e\r\n\r\n\r\n\r\n\r\nVehicle brand\r\nHONDA\r\n\r\n\r\n\r\n\r\nVehicle model\r\nCRF R 250 cc \r\nCRF RX 250 cc \r\n\r\n\r\n\r\n\r\nVehicle version\r\n\r\nVehicle year\r\n2018\/2024\r\n2019\/2024\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nHONDA CRF R 250 cc 2018\/2024\r\n\r\n\r\nHONDA CRF RX 250 cc 2019\/2024\r\n\r\n\r\n\r\n \r\n\r\n\r\n\r\n\r\n","brand":"Pro Moto Parts","offers":[{"title":"Default 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cc \r\n\r\n\r\n\r\n\r\nVehicle version\r\n\r\nVehicle year\r\n2018\/2019\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nHONDA CRF R 250 cc 2018\/2019\r\n\r\n\r\nHONDA CRF RX 250 cc 2018\/2019\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n","brand":"Pro Moto Parts","offers":[{"title":"Default Title","offer_id":53325781893458,"sku":null,"price":480.16,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1039\/7994\/2226\/files\/P400210100066.jpg?v=1777648330"},{"product_id":"athena-complete-cylinder-standard-bore-zuiger-kit-79mm-250cc-honda-crf-250r-2020-crf-250rx-2020","title":"Athena Complete cylinder standard Bore + zuiger kit 79mm ( 250cc ) Honda CRF 250R 2020- \u0026 CRF 250RX 2020-","description":"\u003ch2\u003eVehicle compatibility\u003c\/h2\u003e\r\n\r\n\r\n\r\n\r\nVehicle brand\r\nHONDA\r\n\r\n\r\n\r\n\r\nVehicle model\r\nCRF R 250 cc \r\n\r\n\r\n\r\n\r\nVehicle version\r\n\r\nVehicle year\r\n2020\/2023\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nHONDA CRF R 250 cc 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