{"product_id":"tk-01-05-0114","title":"Super Head 4V+R Bore Up Kit 181cc GROM MSX125","description":"\u003cp\u003e【SP Takegawa 01-05-0114 Super Head 4V+R Bore Up Kit 181cc GROM MSX125 Engine Parts Takegawa】\n\u003cbr\u003e■Product Description\n\u003cbr\u003eSuper Head 4V+R (1 Cam 4 Valve).\n\u003cbr\u003eBy adopting a 1-cam 4-valve head, we have achieved both easy-to-handle output characteristics and high output! \u003c\/p\u003e\n\n\u003cp\u003e■Detailed Description\n\u003cbr\u003e●Super Head 4V+R (1 Cam 4 Valve)\n\u003cbr\u003eBy having two intake and two exhaust valves each, the valve curtain area is expanded, achieving high intake and exhaust efficiency.\n\u003cbr\u003eThe original head shape is designed to balance the center plug, valve pinch angle, combustion chamber shape, and port shape that accompany the conversion to 4 valves, achieving high output that cannot be obtained with a normal head. The combustion chamber is finished with high precision by NC machining.\n\u003cbr\u003e●SOHC class leading intake and exhaust efficiency\n\u003cbr\u003eValve diameter IN: 25mm x 2 \/ EX: 21.5mm x 2\n\u003cbr\u003eValve stem shaft diameter: 4.5mm for both IN and EX.\n\u003cbr\u003eBy adopting unequal pitch valve springs, surging at high rotation is prevented.\n\u003cbr\u003eThe cylinder head surface is black painted.\n\u003cbr\u003eAn inspection breather cover is included, so by purchasing an oil catch tank kit separately, the internal pressure of the engine can be released.\n\u003cbr\u003eThe inspection breather cover, inspection cover, and L. cylinder head side cover are made of die-cast aluminum with barrel polishing.\n\u003cbr\u003e●Aluminum forged roller rocker arm\n\u003cbr\u003eReduces friction resistance with the camshaft and achieves smooth operation! Maximizes output and maintains output in the mid to high speed range.\n\u003cbr\u003e●Auto decompression camshaft\n\u003cbr\u003eAllows for smooth engine starting without putting a burden on the starter motor.\n\u003cbr\u003e●All-aluminum ceramic plated cylinder adopted\n\u003cbr\u003eBore diameter: 63mm. Stroke 57.9mm (normal).\n\u003cbr\u003eThe ceramic plated cylinder has excellent durability, airtightness, and heat dissipation.\n\u003cbr\u003eThe cylinder is equipped with an oil outlet for an oil cooler, so by purchasing an oil cooler kit separately, the oil temperature rise can be suppressed.\n\u003cbr\u003eThe cylinder surface is black painted.\n\u003cbr\u003e●Aluminum cast piston\n\u003cbr\u003eHigh compression specification with a compression ratio of 12.5:1.\n\u003cbr\u003ePiston designed for high performance and durability.\n\u003cbr\u003eThe piston top is finished with high precision by NC machining.\n\u003cbr\u003e●Super Head 4V+R Bore Up Kit 181cc\n\u003cbr\u003eThe head kit, cylinder kit, and auto decompression camshaft kit are included in the set. \u003c\/p\u003e\n\n\u003cp\u003e■Compatible Models\n\u003cbr\u003eHONDA\n\u003cbr\u003eGROM (JC61-1000001 to 1299999)\n\u003cbr\u003eGROM (JC61-1300001 to)\n\u003cbr\u003eMSX125SF\n\u003cbr\u003eMSX125\n\u003cbr\u003e*Simultaneous installation of a specified FI-Con (injection controller) is required to perform appropriate fuel adjustment for engine parts. \u003c\/p\u003e\n\n\u003cp\u003e■Notes\n\u003cbr\u003e*The image is for illustration purposes only. It includes products with different sizes and colors.\n\u003cbr\u003e*Product design and specifications may change without prior notice. Please understand.\n\u003cbr\u003e*Simultaneous installation of an injection controller that performs appropriate fuel adjustment for engine parts is required.\n\u003cbr\u003e*SP Takegawa recommends purchasing a separate manifold adapter set with tapered processing that allows smooth intake from the normal manifold to the intake port.\n\u003cbr\u003e*This product is made to order, so cancellations after ordering are not possible.\n\u003cbr\u003e*This product is made to order and takes time for delivery. Also, without prior notice, the manufacturer may discontinue the product or change specifications. Please be aware of this beforehand. \u003c\/p\u003e","brand":"スペシャルパーツ武川(SPECIAL PARTS TAKEGAWA)","offers":[{"title":"Default Title","offer_id":47208274493675,"sku":"tk-01-05-0114","price":151412.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1021\/9499\/files\/tk-01-05-0114.jpg?v=1766738521","url":"https:\/\/bikeman.jp\/en\/products\/tk-01-05-0114","provider":"バイクマン","version":"1.0","type":"link"}