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Their are no government restrictions on the 150 class bikes, that's why you need a motorcycle class endorcement on your drivers liscense to be legal. However their is a rpm limiter built in to your cdi. Its a small box that's runs the ignition spark. They usually limit to 6000 to 7500 rpms. Changing out the box alone is not enough and not always needed to go faster. engine power depends on air and fuel flow. increase exhaust, jet size in the carb, and air intake to get more power. Also lowering the weight of the rollers in the cvt will allow the engine to spin higher rpms and hold higher rpms at all speeds.

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13y ago

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