Racing Carburator

Racing Cylinder Head Kits

OKO brand is well known in the scooter market. Most important, there are not many clutches like this out there. Both the OKO and the KOSO Clutch are really good. But in my experience, I would choose OKO or KOSO. We found it to be reliable then any of the brands in 150cc clutches. Adjustable clutch. As you can see the clutch is built so you can change the springs to adjust your scooter start up. Not riveted like those cheap clutches that are said to be racing clutches. This is the big boss! Made from Taiwan quality. If your not a certified mechanic, or have knowledge on installing this unit. We recommend that you find someone who is qualiified to handle the task. This unit can handle GY6 150 engines and definitely big bore upgrades that comes it's way.

For GY6 125,150CC Engine

1500 RPMs release for take off Yellow Main Torque Spring gets it done with set of 10 - 11gram

For GY6 125,150CC Engine
Releases at 1000RPMs
Get that acceleration you want from and of these Performance Torque Spring.
Choose the spring favorable to the type of ride you want to get out of your scooter. Please

COOL TIPS

High Performance Clutch Springs. Most stock clutches engage 1000 RPMS. This is ok if you just want a cruising ride. But if you want to get the most out of your Perforance Clutch, such as our KOSO or Motorio Clutch. We recommend that you go with a 1500RPM torque spring. The torque spring keeps tension ont he belt and counters the force of the roller/slider weights. It controls the shift points. The main torque spring forces the variator to draw the belt inward on the clutch. For this reason in higher RPM's it keeps a lower gear ratio, and on downshifts it is faster and provides a deceleration in a lower radio when you hit the throttle (gas).
Remember, a stiffer/harder spring shifts the CVT systems (mechanisim) fasters. Which will give you more power when coming out or going up a hill. Just remember that a clutch torque spring does not effect your top speed. This is important: Using lighter roller weigts 7 grams, 8 grams, 9 grams can affect you top end speed. Thats because the roller weights are not heavy enough, to really overcome the spring's tension. How to determine what roller weights to place on your scooter depends on a number of factors such as: the type of engine upgrades made on the scooter, and weight of the rider. We recommend combining the roller weights in order to get both low and top end performance. The combination of the roller weights or sliders depend on these factors mentioned above. You would have to combide the roller weights, test your scooter with different combinations to determine the perfect responds or output you want to get from your ride.