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torque spring 2500rpm for 125cc 150cc and up
Location: Shortcut to Homepage /racing parts 125cc/transmission/torque spring 2500rpm for 125cc 150cc and up
torque spring  2500rpm for 125cc 150cc and up

Product Information

torque spring  2500rpm for 125cc 150cc and up

a stronger torque spring in your driven pulley (around 800 rmp for standard) improve acceleration, reacceleration, reduce belt sliping 

the belt stay in tension, so you stay longer in shorter speed, and high rpm, improving overall riding, even with a standard motor wich lack torque

a tuned scooter need a stronger torque spring.

available: 1000rpm, 1500rpm, 2000rpm, 2500rpm.

Attention, a harder spring shorten the belt life, prefere a quality belt like zijingang or better.

essential with a bigger bore, except for the 1000 rpm that fit well on standard motor  and the racing clutch .

Quality made in Taiwan !


Attention with the 2500RPM the belt wearing will be really very quick, the belt life is really very shorter with this one.

length 152mm

diameter 59mm

125cc and  150cc +

for chinese scooter, gy6 152QMI 125cc and 153QMI 150CC, motors,  Peugeot sum up, Revatto, jonway, Roadsign, Aztral, kinroad, Yiying, baotian, znen, Gowinn, jmstar meiduo, haizhimeng, wangye, Jialing, vonroad, Hanglong, Jincheng, Zongshen, Linhai, Benzhou, Dazon, Huibang, Zhonghyu, Shenke, Wacox, etc...

all the tutorials and informations on  http://www.scooterchinois.fr/modules/newbb/viewforum.php?forum=98

don't foget to buy our special tool to remove the clutch and change the spring easilly:


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Price: €12.00ttc

Product Code: rp2500rpm125
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