{"id":283,"date":"2022-05-17T01:46:22","date_gmt":"2022-05-17T01:46:22","guid":{"rendered":"https:\/\/minipowersportshq.com\/?p=283"},"modified":"2023-04-02T21:13:13","modified_gmt":"2023-04-02T21:13:13","slug":"how-to-make-the-coleman-ct200u-and-ct200u-ex-faster","status":"publish","type":"post","link":"https:\/\/minipowersportshq.com\/how-to-make-the-coleman-ct200u-and-ct200u-ex-faster\/","title":{"rendered":"How to make the Coleman CT200U and CT200U-EX Faster"},"content":{"rendered":"\n

If you own a Coleman CT200U or CT200U-EX mini bike you know how much fun they are to ride. However, as you spend more time in the seat of one of these machines, you quickly realize that they are not very fast. But don’t worry, that can be fixed. <\/p>\n\n\n\n

To make your Coleman CT200U or CT200U-EX faster you can install a torque converter, remove or bypass the governor, and add performance kit parts. Each of these modifications can be done alone or you can do them all. So let’s look at what these easy upgrades entail and how they can boost your top speed.<\/p>\n\n\n\n

Install a torque converter <\/h2>\n\n\n\n

Adding a torque converter is a great way to improve your mini bike’s performance. Not only will it give the bike better low end power for take offs and hill climbs, but it will also increase your top speed. Many claim that their mini bikes went 10-12 miles per hour faster after adding a torque converter.<\/p>\n\n\n\n

Replacing your centrifugal clutch with a torque converter is a little more complicated than just taking out a few bolts and putting them back, but anyone with a little mechanical know how can do it. It also means you are going to have to break out your wallet. Most torque converter kits cost somewhere in the neighborhood of $200. This may sound like a lot, but when you feel the difference in performance, you will know it was money well spent. <\/p>\n\n\n\n

If you decide to buy a torque converter kit, make sure you measure your crankshaft before ordering. Coleman manufactured the CT200U and CT200U-EX with two different crankshaft sizes. The older models had a 3\/4 inch crankshaft and newer models have a 5\/8 inch crankshaft. To be sure which crankshaft size is on your mini bike, simply take a tape measure or ruler and measure across the diameter of the crankshaft.<\/p>\n\n\n\n

Remove the governor<\/h2>\n\n\n\n

Coleman engines have a governor system that is comprised of a series of levers and springs that connect to a governor gear with flyweights inside the crankcase. This system keeps the engine from operating above 3,600 rpms. Bypassing or removing the governor allows the bike to reach rpms of 5,000+. Higher rpms means higher speeds.<\/p>\n\n\n\n

The zip tie method or bypassing the governor is probably the easiest and definitely the least expense modification. Many people start here because it’s basically free and only takes a few minutes. All you need to do is tighten a zip tie around the coils of the governor spring located under the gas tank. This will prevent the spring from stretching and engaging the governor system. <\/p>\n\n\n

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Picture of the governor spring under the gas tank.<\/figcaption><\/figure><\/div>\n\n\n

Removing the governor system is inexpensive, but not simple. This process involves opening up the crankcase to remove the governor gear. When you’re done, you are left with a hole in the top of the crankcase that you will need to make sure you plug. <\/p>\n\n\n\n

Once you get your engine back together you will need to either purchase a top throttle plate or engineer a way to secure the throttle cable to the carburetor so the twist throttle will work properly. Anytime you open up your crankcase, the risks of something going wrong increases drastically, so make sure you know what you’re doing before you start. <\/p>\n\n\n\n

Removing or bypassing the governor can be dangerous. These motors were not engineered to consistently run over 3,600 rpms. There is a chance that prolonged use at higher rpms can result in a bent push rod or valve stem. <\/p>\n\n\n\n

The worst case scenario is the cast iron flywheel shatters under the increased stress. This is not only bad for the engine, but also for the safety of the rider. When a flywheel goes, it sends pieces of shrapnel tearing through the crankcase and anything else in it’s path. I don’t know about you, but I don’t want to be sitting on top of the engine when that happens. <\/p>\n\n\n\n

If you want to remove the governor without the risk, think about upgrading the flywheel, rod and valve springs. Later in this post we will talk about different performance kits that involve these upgrades. You can also check out our post What does a Governor do on a Mini Bike?<\/a> for more detailed information.<\/p>\n\n\n\n

Add a performance kit<\/h2>\n\n\n\n

One of the great things about the popularity of Coleman mini bikes is finding after market parts is really easy. There are numerous companies out there that offer performance kits to increase your mini bike’s horse power. We are going to focus on the ones offered by OMBWarehouse.com<\/a> and GoPowerSports.com<\/a>. These two sites are major players when it comes to the after market go kart and mini bike parts.<\/p>\n\n\n\n

Performance kits are offered in different stages. For example, at OMBWarehouse.com<\/a> a stage 2 kit has all the same parts as a stage 1 kit plus a couple more. So you want to decide up front how big you want to go. You can still start with a stage 1 kit and add more performance parts later. It just doesn’t make much sense to spend money on a stage 2 kit that includes a lot of the same parts you got in the stage 1 kit. <\/p>\n\n\n\n

The kits offered by GoPowerSports.com<\/a> build upon each other. So a stage 2 kit is added on top of a stage 1 kit. You can buy a stage 1 kit now and then add a stage 2 kit later. Let’s see what each has to offer.<\/p>\n\n\n\n

OMBWarehouse.com stage 1 performance kit<\/h3>\n\n\n
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OMBWarehouse.com’s Stage 1 Performance Kit<\/a> is specifically for the CT200U model and was designed to give you 1-1 1\/2 more horsepower. This kit is easy to install and easy on the bank account with a price around $75. Let’s take a look at what’s included in this kit:<\/p>\n\n\n\n