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オートバイのカスタムパーツならスペシャルパーツ武川
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■Heavy duty crankshaft(57.9mm Stock stroke) High strength and light weight “X cross-sectional shape” connecting rod, compared to the stock crankshaft, it has significantly strengthened and is correspondence with high-spec engines. As a result, it has significantly strengthened (compared to the stock crankshaft) and is correspondence with high-spec engines.
X cross-sectional shape connecting rod
Machined forged material to “X cross-sectional” shape. It is lightweight and secures sufficient strength, and the diffusion of buckling stress and torsional rigidity are greatly improved. The surface is shot peening processed.
The heavy duty crankshaft can be used with GROM, MSX125, MSX125SF, Monkey 125 (JB02), and SP Takegawa S stage 181cc bore up kit and super head 4V + R 181cc bore up kit.
The connecting rod and stock cylinder skirt interfere with each other when using a stock cylinder and an e-Stage 143cc bore-up kit. Need to modify the cylinder skirt to avoid it. Please check the engine specifications before purchasing. When assembling the crankshaft, if any deterioration or damage is found on the OEM parts, be sure to replace them with new parts.
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