Re: How do i remove a restrictor???!?!

joew /
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with no other changes on a bike in perfect tune, switching the stock muffler for a performance exhaust will add near 5 to 10 mph..

Some drawbacks are it's loud, the engine is under more stress (higher RPMs), the rest of the bike is built for 30 mph, it's illegal, you must tune much more carefully, it costs money, it may require welding, they don't last as long as stock mufflers..

If all that's desired is more top speed, i'd recommend playing with gearing first.

Higher gearing alone (different sprockets or pulley sizes) might show very satisfactory results, and there's no real downside.

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