BBR Tuning Racing Series Stage 2 66/80cc 2-Stroke Engine Kit


FREE SHIPPING to Continental US
FREE 6-Month Warranty

Engine Color: Silver
Sale price$229.95


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.

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

Product Details

The BBR Tuning 66/80cc 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 (horsepower)

25 to 40 mph depending on the gear ratio and weight

Fuel Economy: 100-125 miles per gallon

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).

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”).

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.

On top of our strict quality assurance measures, we also back our engines with an industry leading 6 month warranty

Package Includes:

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)

5.Low Profile Carburetor

6.Upgraded Chrome Muffler

7.Complete Clutch Cable Assembly with Clutch Wire Clip

8.Drive Chain Idler Pulley

9.Top Quality Japanese 202 Main Bearings

10.415 Bike Engine Drive Chain

11.Drive Chain Guard

12.2-Stroke Spark Plug

13.Electron Ignition Coil (CDI)

14.Locking Alloy Clutch Lever

15.Upgraded Twist Throttle and Cable With Grip

16.Updated 1.5L Black Teardrop Gas Tank (approx. Γàû of a gallon)

17.Fuel Line

18.Throttle Cable

19.Gasoline Tank Switch

20.Sprocket Clamp Assembly

21.44 Tooth Chrome Drive Sprocket with 9 Holes

22.Large Spring (Heat Shield Spring)

23.Extension Spring (Recoil Spring)

24.High Quality Japanese Bearings on Both Ends of Crank

25.Required Hardware and Gaskets


27.Kill Switch

28. Complete Digital Installation Guide

29.Spark Plug Removal Tool (While Supplies Last)!

30.Standard Universal Mounting Bracket

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.

** Please 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 the previous production.

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. 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 manufacturers 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 equal 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 34 reviews
Don Nordhaus
2-stroke engine

Haven’t used it yet, but I have 3 others that are fantastic!!!!!!!

Matthew Lee Chambers

The engine is awesome. Great top end like advertised. Very fast and I’m 220ibs and I’ve easily hit 40 mph on a straight. Of course I have my bike set up for speed as well but this engine is just perfect for what I need. Thought I did not get a Mount for the air filter and had to use the basic one that came along with the package

Shalisa Thompson

Was packed great looks good and rums good

Jaden Weitz

Super fun. Great motor. Had to do slite modifications on the bike but turned out great ��

John Allen

niiiice!!!! Installation was a breeze. Some minor adjustments here and there. I was able to get to 40 mph to my surprise!

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