Streetfighter Undertail Panel 022.STFSuper Sprox Ninja.250 RST-486
STS Torque Spring 23233-KWN-000
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STS Torque Spring 23233-KWN-000

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With the shorter YUMINASHI STS Spring, the Yuminashi R&D has surched for the best balance to improve not only the acceleration like you can expect from a normal after market torque spring, but to transform also the PCX125 his genuine overdrive characteristic in to a shorter sports gear characteristic. Like this you solve the problem of going in overdrive to soon so that your engine "can pull it" and make it your engine a lot more easier to rev and to reach top speed.

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