{"product_id":"kn-kn-cy63f-lc-set","title":"63mm Big Bore + High Cam + Big Valve Head! Full Set Engine Kit, For Long Crankshaft Only, Cygnus X","description":"【KN Planning KN-CY63F-LC-SET 63mm Big Bore + High Cam + Big Valve Head! Full Set Engine Kit for Long Crank Only - Cygnus X】\u003cbr\u003e\n ・KN Planning 63mm Big Bore + High Cam + Big Valve Head! Full Set Engine Kit 【Cygnus X \/ BW'S】\u003cbr\u003e\nFor long crank only\u003cbr\u003e\n 【Features】\u003cbr\u003e\n\u003cbr\u003e\n ・Finally here! No more hesitation! A complete engine kit!\u003cbr\u003e\n ・Full kit with big valves optimal for a 63Φ bore diameter + high cam head.\u003cbr\u003e\n ・This kit is specifically designed for 3mm long stroke cranks.\u003cbr\u003e\n ・Please combine with a 60.9mm stroke crank.\u003cbr\u003e\n ・For Cygnus X 1st-3rd gen, click here. For Cygnus X 4th-5th gen \/ BW'S125 1st-2nd gen, click here.\u003cbr\u003e\n ・Includes dedicated roller rocker arms! Maximum friction reduction!!\u003cbr\u003e\n ・A thoughtful kit that includes tappet adjusting bolts \u0026 nuts and even rocker arm shafts!\u003cbr\u003e\n ・Ports are significantly larger than genuine ones.\u003cbr\u003e\n ・Designed to extract power without additional machining.\u003cbr\u003e\n ・Camshaft profile is also optimized for the kit.\u003cbr\u003e\n ・Employs a forged piston for improved durability.\u003cbr\u003e\n ・Top shape is high-compression type.\u003cbr\u003e\n ・Crankcase boring is required.\u003cbr\u003e\n 【Type】\u003cbr\u003e\nFor long crank only\u003cbr\u003e\n 【Size】\u003cbr\u003e\n\u003cbr\u003e\n ~Cylinder~\u003cbr\u003e\n ・Bore diameter: 63Φ\u003cbr\u003e\n ・Aluminum plated sleeve cylinder\u003cbr\u003e\n ・Displacement: 189.72cc (with 3mm long stroke)\u003cbr\u003e\n ~Piston~\u003cbr\u003e\n ・Forged aluminum piston\u003cbr\u003e\n ・High compression type\u003cbr\u003e\n ~Cylinder Head~\u003cbr\u003e\n ・Valve size: IN24mm \/ EX21mm\u003cbr\u003e\n ・Combustion chamber volume: 17cc\u003cbr\u003e\n ・BIG Port\u003cbr\u003e\n ・Reinforced valve springs (Silicon chromium alloy SWOSC-V)\u003cbr\u003e\n ~Camshaft~\u003cbr\u003e\n ・Duration: IN240° \/ EX240° (at 1mm lift)\u003cbr\u003e\n ・Lift amount: IN6.28mm \/ EX6.28mm\u003cbr\u003e\n ・Dedicated roller rocker arms included\u003cbr\u003e\n 【Compatibility】\u003cbr\u003e\n\u003cbr\u003e\n ・Cygnus X 1st gen Japanese spec【5UA】\u003cbr\u003e\n, Taiwanese spec【5TY】\u003cbr\u003e\n\u003cbr\u003e\n ・Cygnus X 2nd gen Japanese spec【28S】\u003cbr\u003e\n, Taiwanese spec【4C6・1CJ】\u003cbr\u003e\n\u003cbr\u003e\n ・Cygnus X 3rd gen Japanese spec【1YP】\u003cbr\u003e\n, Taiwanese spec【1MS】\u003cbr\u003e\n\u003cbr\u003e\n ・Cygnus X 4th gen Japanese spec【BF9】\u003cbr\u003e\n, Taiwanese spec【2UB】\u003cbr\u003e\n\u003cbr\u003e\n ・Cygnus X 5th gen Japanese spec【B8S】\u003cbr\u003e\n, Taiwanese spec【B2J】\u003cbr\u003e\n\u003cbr\u003e\n ・BW'S125 1st gen Taiwanese spec【5S9】\u003cbr\u003e\n\u003cbr\u003e\n ・BW'S X 1st gen Taiwanese spec【46P】\u003cbr\u003e\n\u003cbr\u003e\n ・BW'S 125 2nd gen Japanese spec【BG1】\u003cbr\u003e\n\u003cbr\u003e\n ・BW'S R 2nd gen Taiwanese spec【2JS】\u003cbr\u003e\n\u003cbr\u003e\n 【Set Contents\/Accessories】\u003cbr\u003e\n\u003cbr\u003e\n ・Dedicated cylinder head (IN \u0026 EX valves, springs pre-assembled) ×1\u003cbr\u003e\n ・Dedicated camshaft ×1\u003cbr\u003e\n ・Dedicated rocker arms IN \u0026 EX (tappet adjust nut \u0026 bolt, rocker arm shaft included) ×1 set\u003cbr\u003e\n ・Dedicated cylinder ×1\u003cbr\u003e\n ・Dedicated forged piston kit (rings, pin, clips included) ×1 set\u003cbr\u003e\n ・Dedicated head \u0026 base \u0026 tensioner gasket ×1\u003cbr\u003e\n ・Instruction manual\u003cbr\u003e\n 【Precautions】\u003cbr\u003e\n\u003cbr\u003e\n *The head temperature sensor hole is M10×1.25 specification. If not used, the hole must be sealed with a bolt, etc.\u003cbr\u003e\n *This product is a high-end tuning part. Please ensure assembly is performed by an experienced mechanic.\u003cbr\u003e\n *In cases where the chain guide interferes due to individual differences, please address with machining or other methods.\u003cbr\u003e\n *The genuine fixing bolt for the rocker arm pin plate is long and may interfere with the rocker arm.\u003cbr\u003e\n *Please use a washer with the bolt to avoid interference.\u003cbr\u003e\n *This product is a kit exclusively for long stroke cranks (60.9mm). It cannot be combined with a genuine crank.\u003cbr\u003e\n *Crankcase boring is required for this product.\u003cbr\u003e\n *Images are for illustration purposes only, and the design and specifications of the products listed may change without notice. Please be aware.","brand":"KN企画(KN KIKAKU)","offers":[{"title":"Default Title","offer_id":45477310759147,"sku":"kn-kn-cy63f-lc-set","price":97900.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1021\/9499\/files\/4580630307343.jpg?v=1717796253","url":"https:\/\/bikeman.jp\/en\/products\/kn-kn-cy63f-lc-set","provider":"バイクマン","version":"1.0","type":"link"}