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4-Stroke Engine Kits

Customers love the longevity and durability of the Grubee 49cc 4G-TBelt Drive Complete Gas Powered Engine Kit! There is no need to mix oil and gas!

Don’t be led astray by inferior quality engine kits! Grubee products are produced to last and are one of the only EPA certified engine kits on the market today!

The 4G-TBelt Drive Transmission offers a quiet ride with a belt that is easy to replace after hours of riding time.

Cruise around town at 35mph while maintaining 150mpg average. The new 49cc 4G T Belt Drive bicycle engine kit is perfect for a long urban commute or nice ride in the country. 4 Stroke engines are much easier to maintain and quieter than 2 Stroke engines.

Be sure to look at our upgrades and accessories to make the most out of your engine kit!

The Bicycle-Engines.com website features various areas of expertise including a hints and solutions section as well as downloadable instruction manuals.

If you are unable to find the information that you need to get your Motorized Bicycle on the road then please feel free to call us here at Birddog Distributing, Inc. 406-586-5970 and we will do our best to help you out!

49cc 4G T-Belt Drive Complete Gas Powered Engine Kit

The Grubee 4G is back in stock with VERY limited quantities. Get them while they last. This 4 stroke motorized bicycle engine kit comes with everything you need to convert most V-frame bicycle to a 49cc gas powered scooter. Simply clamp on the engine,...

49cc 4G T-Belt Drive Mounting Kit Only

$169.99 $99.99

The 4G T-Belt Drive Mounting Kit comes with all the parts you need to motorize your bike except the engine and transmission. Kit Includes: 48 Tooth Rear Drive Sprocket Rear Drive Sprocket Mounting Kit 3 Piece Wide Crank 1pc to 3pc...