The Best Bike Engine Kits of 2018

Search “Bicycle Engine Kit” online and you’ll get more choices than you’ll know what to do with: 2-stroke bicycle engine kits, 4-stroke bike engines, and friction drive vs. standard drive… It’s too much work to go through each and every review of all the choices out there, but that’s where we come in.

We’ve tested, ridden, and fixed so many engines on the market that we can confidently say we’ve compiled a list of the Top 5 Bicycle Engine Kits for your next motorized bike build. Like we’ve mentioned, there are frankly too many options out there, so we made sure to build a list of the best bicycle engine kits for your needs.

No matter if you’re new to the bicycle engine world or you’ve been working on motorized bikes for a while now, our list of the Top 5 Bicycle Engine Kits of 2018 will guide you to the bicycle engine kit for your skill level and your riding needs:

 

#1 Flying Horse 66/80cc EPA Approved Silver Angle Fire 2-Stroke Bicycle Engine Kit– Editor’s Choice

Whether you’re brand new to the bicycle engine world or you’ve been building motorized bikes for a while now, the Flying Horse 66/80cc EPA Approved Silver Angle Fire 2-Stroke Bicycle Engine Kit is loved by everyone who’s ever gotten the chance to ride it- especially us. It may seem like every other engine on the market, but a close look at this engine proves otherwise.

While most engines need a fuel ratio of 30:1 (4oz : 1gal), this engine only requires 100:1 (1.28oz : 1gal) which is less than double the amount of oil to run properly at speeds of 25 to 35 MPH stock- even faster with the added high performance carburetor. That’s because the components are made to take less lubrication without suffering damage, showing their superior build quality over many engines on the market. That low fuel ratio in combination of with its catalytic converter means you’re kicking less pollution into the air, and a cleaner burning ride is always a nice thing, we think.

 

#2 BBR Tuning 38cc Lock-N-Load Friction Drive Bicycle Engine Kit- 4-Stroke– Easiest to Install

The great thing about the BBR Tuning 38cc Lock-N-Load 4-Stroke Friction Drive Bicycle Engine Kit is how easy it is to install. Unlike other motors on the market that mount to your frame, this friction drive mounts over the rear wheel of your bike (or the front if you’re in a pinch). All you have to do is mount the friction drive assembly to your frame with a few bolts, mount the engine and throttle/kill switch, fuel up, and you’re ready to ride.

You’re also not limited to men’s bicycle frames or 26” wheels to use this engine: female frames, BMX bikes, even tricycles can become motorized bikes with this friction drive. While it may not be the fastest motor on our list (topping out around 15 MPH), it’s definitely the simplest to install and the most versatile, too.

OUR PRICE: $229.95, Buy this bicycle engine kit here

 

#3 BBR Tuning Racing Series Stage 4 66/80cc 2-Stroke Engine Kit– Fastest 2-Stroke

When it comes to a fully equipped motorized bike engine, the BBR Tuning Racing Series Stage 4 66/80cc 2-Stroke Engine Kit is loaded with all the performance parts you need to fly past the competition. Its Silver BBR Tuning 66/80cc base is one of the best backed engines on the market. Add to that the high performance components that come with it- including its high performance carburetor for better speed, high performance head for better torque, expansion chamber for a smoother ride, and Stage 1 CDI for tons of spark- and you’re looking at a motor that performs better than it looks.

It’s not only a fast motor, this bicycle engine kit is made to last for some time. Now, keep in mind that this is a high performance engine, so breaking in and tuning this motor is required for the best performance. We recommend this bike engine kit for riders familiar with tuning engines so you can feel the power and speed that made us love this bike.

OUR PRICE: $229.95, Buy this bicycle engine kit here

 

#4 BBR Tuning Complete 79cc The Beast Pull Start 4-Stroke Bicycle Engine Kit– Fastest 4-Stroke

If you’re looking for a monster of an engine, the BBR Tuning Complete 79cc The Beast Pull Start 4-Stroke Bicycle Engine Kit is what you’ve been waiting for. True to its name, the Beast 79cc 4-stroke engine kit puts lots of other 4-stroke bicycle engines to shame. Don’t let the initial size scare you: while it does come pre-installed with a gas tank, it is completely removable. Once you remove that tank you’ll see that it’ll fit in nearly any frame a 49cc 4-stroke bike engine would (though it’s going to be a little tight when you install).

Its transmission is made of high quality metal that’ll keep your ride running smoothly, and its powerful horizontal 79cc motor will have you clipping along at speeds of up to 35 MPH without skipping a beat- that’s as fast as most 66/80cc 2-strokes except you don’t have to premix gas. Though the killswitch needs a little bit of creative wiring to accomplish, once you get the motor installed on your bike and hear the roar of this beast you’ll know you made the right choice with this super strong 4-stroke bicycle engine kit.

OUR PRICE: $269.95, Buy this bicycle engine kit here

 

#5 66/80cc BBR Tuning Bullet Train Electric Start Engine Kit – Best Features

Lots of riders think that because the 66/80cc BBR Tuning Bullet Train Electric Start Engine Kit (and replicas of the Bullet Train like the BT-80) don’t have high performance parts available for them they’re not as great as other 2-strokes on the market. Those riders are wrong. The Bullet Train engine kit is hands down one of the best engines we’ve ever ridden.

Not only can you upgrade the carburetor from a stock NT carburetor to a Speed carburetor or high performance carburetor, but it’s also got a dual-start component. There’s an electric start option that’ll allow you to star the engine with the push of a button, as well as a pull start on the side of the engine along with a centrifugal clutch. No more engaging or disengaging your engine to get your engine to start or keep running- just hit the button (or pull the rope) and you’re ready to ride in seconds. It may be a little bulky, but with the included wide crank set you can rest easy knowing that your pedals will clear the motor. This motor’s got speed, power, and some of the best features we’ve seen out of a 2-stroke bicycle engine kit- what more could you possibly want?

OUR PRICE: $249.00, Buy this bicycle engine kit here

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