{"product_id":"tk-01-06-0035","title":"17R-Stage+D Bore Up Kit 106cc H-Cylinder\/2B for Monkey, Gorilla, Dax, Magna","description":"\u003cp\u003e【SP武川 01-06-0035 17R-Stage+D Bore Stroke Up Kit 106cc H Cylinder\/2B Monkey Gorilla Dax Magna Bore Up Engine Parts Takegawa】\n\u003cbr\u003e■Product Description\n\u003cbr\u003eBy improving the ports and fin shapes from the conventional R-Stage+D and adopting a new camshaft profile, output at higher RPMs has been further increased!\n\u003cbr\u003e50mm stroke crankshaft with X-section connecting rod. \u003c\/p\u003e\n\n\u003cp\u003e■Detailed Description\n\u003cbr\u003e●17R-Stage+D Cylinder Head\n\u003cbr\u003eBased on the normal head shape, large diameter valves are adopted: Intake: 26mm \/ Exhaust: 22.5mm.\n\u003cbr\u003e(12V Monkey normal valve diameter is Intake: 19mm \/ Exhaust: 16mm)\n\u003cbr\u003eIn conjunction with the large diameter valves, SP Takegawa's original cylinder head adopts an optimal valve included angle, combustion chamber shape, and port shape.\n\u003cbr\u003eWhile the normal head's port diameter is 14mm for both intake and exhaust, the 17R-Stage's port diameter is enlarged to Intake: 24.5mm \/ Exhaust: 19mm. In addition, by adopting a 3D port shape, combined with the larger diameter valves and ports, it enables smoother flow of more intake and exhaust gases.\n\u003cbr\u003eValves: (Intake 26mm \/ Exhaust 22.5mm, Valve Stem Shaft Diameter 4.5mm)\n\u003cbr\u003eBy reducing the diameter of the stem shaft and machining the waist, the weight increase due to the larger valves is kept to a minimum.\n\u003cbr\u003eValve Spring: An optimal spring rate unequal pitch (2-step pitch) single valve spring is adopted to suppress surging at high RPMs.\n\u003cbr\u003e●Auto Decompression Camshaft\n\u003cbr\u003eAuto Decompression Function: Even with high-compression, increased displacement engines, the engine can be started with light kick force.\n\u003cbr\u003eThere are three types of camshafts: R-10E, R-15E, and R-20E, which can be interchanged to enjoy different driving performances depending on the intended use.\n\u003cbr\u003e88cc\/Scut 106cc \/106cc Kit Included Camshaft: R-10E\n\u003cbr\u003e●φ52H Cylinder (Aluminum Iron Sleeve Cylinder) \/ Piston\n\u003cbr\u003eThe external appearance is the same design as the genuine Cub engine cylinder (cylinder height differs).\n\u003cbr\u003eAn M5 temperature sensor can be connected to the side of the cylinder, allowing cylinder temperature to be measured by connecting a separate SP Takegawa compact LCD meter (with M5 temperature sensor), or by changing the sensor part of a thermometer to an M5 temperature sensor.\n\u003cbr\u003eThe piston skirt is molybdenum-coated for better initial break-in.\n\u003cbr\u003e●Reinforced Crankshaft with X-Section Connecting Rod (2-Point Supported Crankshaft)\n\u003cbr\u003eMachined from forged material, adopting an X-section shape.\n\u003cbr\u003eWhile achieving weight reduction, sufficient strength is ensured, and the diffusion of buckling stress and torsional rigidity are significantly improved. The surface is shot-peened.\n\u003cbr\u003eA special bearing is adopted that enlarges the inner diameter of the crankshaft's journal bearing.\n\u003cbr\u003eThis allows the shaft diameter of the journal part, where stress concentrates on the crankshaft, to be increased from 20mm to 22mm, thereby improving the shaft's strength. \u003c\/p\u003e\n\n\u003cp\u003e■Compatible Models\n\u003cbr\u003eHONDA\n\u003cbr\u003e12V Monkey\/Gorilla (Z50J-2000001~\/AB27-1000001~1899999)\n\u003cbr\u003eMonkey R\/RT (AB22-1000017~)\n\u003cbr\u003eMonkey BAJA (Z50J-1700001~)\n\u003cbr\u003e12V DAX50 (AB26-1000001~)\n\u003cbr\u003eCD50 (CD50-1500001~)\n\u003cbr\u003eCL50 (CD50-4000001~)\n\u003cbr\u003eBenly50S (CD50-2200005~)\n\u003cbr\u003eMAGNA50 (AC13-1000010~)\n\u003cbr\u003eCRF50F (AE03-1400001~)\n\u003cbr\u003eXR50R (AE03-1000001~)\n\u003cbr\u003eCRF70F (DE02-1700001~)\n\u003cbr\u003eXR70R (DE02-1000001~)\u003c\/p\u003e\n\n\u003cp\u003e■Notes\n\u003cbr\u003e*Images are for illustration purposes only. Includes products with different sizes and colors.\n\u003cbr\u003e*Product design and specifications are subject to change without notice. Please be aware.\n\u003cbr\u003e*To fully demonstrate engine performance when installing the 17R-Stage+D, SP Takegawa carburetor kit and muffler are separately required.\n\u003cbr\u003e*This product is made-to-order, so cancellations after ordering are not possible.\n\u003cbr\u003e*Due to being made-to-order, this product may take some time for delivery. Also, please note that the manufacturer may discontinue or change specifications without prior notice. \u003c\/p\u003e","brand":"スペシャルパーツ武川(SPECIAL PARTS TAKEGAWA)","offers":[{"title":"Default Title","offer_id":47208272232683,"sku":"tk-01-06-0035","price":133940.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1021\/9499\/files\/tk-01-06-0035.jpg?v=1766738103","url":"https:\/\/bikeman.jp\/en\/products\/tk-01-06-0035","provider":"バイクマン","version":"1.0","type":"link"}