66/80cc BBR Tuning Bullet Train Electric Start Engine Kit - Silver

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FREE 6-Month Warranty

Sale price$278.96 Regular price$309.95


With the BBR Tuning 2-Stroke 66/80cc Bullet Train Electric Start Engine Kit you’ll be taking your motorized bike build to the next level. This multi-purpose gasoline engine kit has an automatic centrifuge clutch. There are two different starting methods, pull-start or electric start, allowing great flexibility in operation. This new, well-designed electric engine kit offers several improvements over previous models. Enjoy the benefits of more horsepower, easier operation and a lower technical dysfunction rate compared to other 2-stroke and 4-stroke engine kits out there.

 If you're an experienced rider ready to take your hobby to the next level with a faster engine, look no further than the BBR Tuning 2-Stroke 66/80cc Bullet Train Electric Start Engine Kit. This engine kit gives you the power and performance you need with the latest upgrades such as high-quality Japanese clutch components and crank bearings. It's specifically designed for speed so it's the ideal upgrade for serious enthusiasts ready to take the next step in terms of performance. Every single electric engine kit is manufactured to the highest quality standards so our customers get the best possible products. But beginners and pro riders alike can enjoy the security and peace of mind that comes with a 6 month warranty on your new engine kit.

This electric start engine fits most bicycle styles such as mountain, road and cruiser that have a V frame shape and 26-inch wheels. For ideal installation conditions, there should be 9 inches to 11 inches of clearance between the top bar and bottom bracket. The frame tube should have a diameter of about 1 inch (25 to 29 millimeters).

Product Features:

  • A simple installation can be completed in a few hours
  • Requires basic tools and moderate skill level to build
  • Allows for fine-tuning adjustments following installation
  • Includes in-depth instructional guide with installation details
  • Engine chain location on the opposite side of the sprocket doesn't interfere with current drive chain
  • Free shipping to the continental US

Complete Digital Installation Guide

Each BBR Tuning bicycle engine kit comes with a digital installation guide that takes you step by step through installing, adjusting, and fueling your brand new engine kit for the ride of your life.

Package Includes:

  1. BBR Tuning 2-Stroke 66/80cc Bullet Train Electric Start Engine
  2. Low Profile Carburetor
  3. Upgraded Chrome Muffler
  4. Drive Chain Idler Pulley
  5. Top Quality Japanese 202 Main Bearings
  6. 415 Bike Engine Drive Chain
  7. Wide Crank Assembly (bottom bracket not included)
  8. Drive Chain Guard
  9. 2-Stroke Spark Plug
  10. Twist Throttle and Cable With Grip
  11. 1.5L Black Teardrop Gas Tank
  12. Fuel Line
  13. Gasoline Tank Switch
  14. Sprocket Clamp Assembly
  15. 40 tooth Drive Sprocket
  16. High Quality Japanese Bearings on Both Ends of Crank
  17. All Required Hardware
  18. Kill Switch
  19. Complete Digital Installation Guide; Downloadable version here

The BBR Tuning 2-Stroke 66/80cc Bullet Train Electric Start Engine Kit is an ideal upgrade for experienced builders ready for more speed and a higher level of performance.

Please note: Sprocket Clamp Assemblies included with Bullet Train 66/80cc, BBR Tuning 2-Stroke 48cc and 66/80cc, and 4-Stroke 49cc bike engine kits come with only 1x set of metal plates. Older production of these assemblies included 2x sets, but from testing and redesigning, existing engine kits and engine kits in the future will only require 1x set. This redesigned assembly helps secure your rear wheel sprocket better than in previous production.

Also note: Due to the design of this engine, most parts (including cylinders, pistons, cranks, and gaskets) and performance upgrade parts (including upgraded mufflers, carburetors, cylinder heads, and case covers) do not fit on this engine. DO NOT purchase parts or performance upgrades designed for non-electric start 2-stroke bicycle engine kits

Attention: This kit does not come included with a bottom bracket assembly. If the bicycle you are converting has a 1-piece crank, you will need to purchase a Bottom Bracket Assembly. If your bicycle has a 3 piece crank, you may not need this piece. However some bicycles with 3 piece cranks may not be compatible with the wide crank assemblies included with this kit.

Disclaimer: Operating this motorized bicycle and bicycle engine kit involved some risk of serious bodily injury. Buyer accepts responsibility for any and all vehicle operation that may lead to personal injury, economic loss, social distress, other losses, costs and damages. Seller is not responsible for injuries and/or damages resulting from operating this motorized bicycle or bicycle engine kit. Upon purchase, the buyer agrees to use products for racing (closed-course competition) only and not for on/off public roads.

Gasoline operated products are NOT compliant with Environmental Protection Agency ( E.P.A. ) or California Air Resources Board (C.A.R.B) for the use on/off Public roads. Upon purchase, the buyer agrees to use products for racing (closed-course competition) only and NOT for on/off public roads.

Disclosure of accurate engine size: While we have chosen to use the long standing factory branding engine size of "80cc", the true displacement of the bicycle engine is 66cc. Down through the years China bicycle engine manufactures have advertised their biggest engine as 80cc, therefore we have listed them in the same way on our website. However, the bore and stroke of an 80cc being 47x38mm equals 66cc. Therefore the true displacement of the 80cc bike motor is 66cc. In the west, the volume of a cylinder is calculated by using the formula Volume = Pi x Radius Squared x Stroke. However,in the east the displacement of an engine includes the area of the cylinder head's combustion chamber as well as the volume of the cylinder. Therein lies a discrepancy between measuring standards by the manufactures in China with those in the United States. However, all "80cc" engine kits on the market today are actually 66cc in displacement size if measuring by US standards.

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Customer Reviews

Based on 45 reviews
Awesome motor

I've been riding motorized bikes for awhile and this motor beats anything I've rode. There's plenty of speed and I love the electric start I'm 62 years old and pedaling a bike to get it started is pretty rough. But hands down this is the best I've had so I would recommend it to anybody that has experience with these bike's. I will tell you look close at the kits picture because that's what your buying the kit don't come with the bottom crank or battery you will have to buy that yourself I think I paid $25 for the battery and $22 for the crank. But again this is well worth your money I had to mount my battery just behind the seat

Geovanni Cruel

Very Good excelente

Stacy Simonson
Great motor with electric start

I love it, So far have bought three of them. One for my boyfriend, daughter, and me. Easy to start, runs good. Not hard to put together.

Robert Knapp
Not for beginners

So this engine is a lot wider then a normal engine. Which is expected but should be noted. I’m guessing it’s as wide as a four stroke. I couldn’t find a tutorial anywhere so if you’re a new builder like me go try something else first, which is the reason for the low rating. Parts seem pretty quality though.

Excellent parts and very good quality but TERRIBLE customer service

The parts I got are indeed good quality parts, but nowhere on the website does it specify wether or not they can be fitted with custom parts. After over 30 minutes on hold, I was told that I would be responsible for shipping the engine back myself, (including costs), and that the refund of the difference would only be in store credit. The act of returning these parts would have ended up costing more money than the refund itself. Again, the parts themselves are good quality, but there is a clear lack of specification on the website and customer service on the phone. In the end I WILL use the engine and I like it a lot but their customer service needs to be improved

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