What's great about the BBR Tuning Stage 2 Bicycle Engine Kit is that while it gives you increased power and speed, it gives you a smoother and more consistent ride than ever. Utilizing the Stage 1 engine's low heat and high compression, the upgraded Stage 2 will also give you unprecedented spark and even better breathing ability.

Quality Engines with Top Quality Performance

BBR Tuning is known for producing engines that put out high performance and never disappoint. With a BBR Tuning 66/80cc Bicycle Engine as a base, you'll get superior quality and performance over other engines on the market. Add the BBR Tuning High Compression Head on top and you've got a dependable engine that runs cooler, harder, and faster than anything you've seen.

This Filter Will Give Your Motor the Air It's Been Waiting For

With the upgraded BBR Tuning Speed Carburetor Air Filter you'll turn your stock NT carburetor into a speed carb in two seconds. Just unbolt the stock filter, slide this on to the carb in its place, clamp it down, and once you start your motor up you'll feel the difference. This air filter will let your motor take in more air, letting it run a little cooler while also giving you a little more speed.

A Head That Will Increase Horsepower and More

With the added BBR Tuning Billet Aluminium High Compression Cylinder Head you'll get more horsepower and better cooling out of your engine. With this head you'll increase your compression, which in turn will give you more power. More power means more torque and a little added speed, which is perfect for riders who climb hills or face inclines. Its deep heat fins and low profile will allow your engine to cool off faster and stay cooler when you're riding.

Don't be stuck buy part after part you don't need. If you've got some hills to climb or you just want a cooler running engine, the BBR Tuning Stage 1 Bicycle Engine Kit is made for you. Just bolt on the head, install the motor on your favorite bike, fuel it up, and you're ready to ride

PLEASE NOTE: Top end assembly required for this engine kit.

*Note: 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.

Installation is a breeze! The rider only needs some basic hardware skills, tools, and around 2-3 hours for installation and fine tuning adjustments (Note: Seller is not responsible for misuse or this kit or any warranty after installation).

Assembly of engine and motorized bicycle required. Click here for instructions

Product Requirements

Fits Most 26" Wheeled Bikes (Mountain, Cruiser, Chopper, Road) with V-frame. The frame should have 9-11” of clearance between the bottom bracket and top bar, and the diameter of the frame tubes should be 25-29mm (around an 1”).

** Also note: Sprocket Clamp Assemblies included with 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.

1. Silver BBR Tuning 66/80cc 2-Stroke Engine
2. Bonus- BBR Tuning Billet Aluminium High Compression Cylinder Head
3. Bonus- BBR Tuning Speed Carburetor Air Filter (color subject to availability)
4. Low Profile Carburetor
5. Upgraded Chrome Muffler
6. Complete Clutch Cable Assembly with Clutch Wire Clip
7. Drive Chain Idler Pulley
8. Top Quality Japanese 202 Main Bearings
9. 415 Bike Engine Drive Chain
10. Drive Chain Guard
11. 2-Stroke Spark Plug
12. Electron Ignition Coil (CDI)
13. Locking Alloy Clutch Lever
14. Upgraded Twist Throttle and Cable With Grip
15. Updated 1.5L Black Teardrop Gas Tank (approx. Γàû of a gallon)
16. Fuel Line
17. Throttle Cable
18. Gasoline Tank Switch
19. Sprocket Clamp Assembly
20. 44 Tooth Chrome Drive Sprocket with 9 Holes
21. Large Spring (Heat Shield Spring)
22. Extension Spring (Recoil Spring)
23. High Quality Japanese Bearings on Both Ends of Crank
24. Required Hardware and Gaskets
25. Magneto
26. Kill Switch
27. Complete Digital Installation Guide
28. Spark Plug Removal Tool (While Supplies Last)!
29. Standard Universal Mounting Bracket

The BBR Tuning 66/80cc Stage 2 Race Series bike engine kit is about 8.5" height 7" length 5" width. The bike engine kit fits on standard, male frames with tubing of 25mm to 29mm in diameter. Larger frame sizes require drilling into bike frame with a stationary bolt and use the universal face plate to mount the front of the engine.

• 2.25+ HP (horse power)
• 25 to 40 mph depending on the gear ratio and weight
• Fuel Economy: 100-125 miles per gallon

Disclaimer: Operating a motorized bicycle and/or bicycle engine kit carries a risk of serious bodily injury. The rider accepts responsibility for any and all vehicle operation that may lead to personal injury, economic loss, social distress, other losses, costs and damages. BikeBerry.com is not responsible for injuries and/or damages resulting from operating this motorized bicycle or bicycle engine kit.

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.

BBR Tuning Engine Kits require a pre-mixed fuel ratio of 40:1 (3.2oz of oil to 1 gallon of gas)

• Recommended Gas Grade: 87 Octane
• Recommended Oil: Maxima Scooter Pro 2-Stroke Synthetic Motor Oil 1 Liter