Original price was: $325.95.$97.79Current price is: $97.79.
(In Stock)
When youre in need of an engine with some serious power, theBBR Tuning Stage 4 Performance Engine Kitis the engine kit for you. With this performance package, youll get everything you need to get tons of power, from top-end speed to bottom-end torque. Outfitted with an Expansion Chamber for a smooth ride, and NGK spark plug and a high-performance head for major compression, and a high-performance carburetor for optimum speed, youve got a motor thats ready to perform and more importantly, a motor thatll last.
Compression of a Performance Motor with the Carburetor to Back it Up
With the BBR Tuning High-Performance head leading the way, this engine will give you more compression than ever. More compression means an increase in speed and pulling power, so not only will you go faster but those hills and inclines wont give you a problem anymore. And if that wasnt good enough, its tall heat syncs let your engine cool faster, letting your ride longer than ever.
Add to that the High-Performance Carburetor, and youve got yourself a speed machine. Its bigger jets will give your engine more fuel, and its air filter will let your carburetor breathe better than ever. Youll definitely need a performance carburetor if youre looking to run a high-performance head, and we made sure that this BBR Tuning package had that standard.
The Smoothest Running Engine Youve Ever Felt
With an Expansion Chamber on this motor you can count on a smooth ride. Ever wonder why it feels so rough when you ride? Thats partially because the stock muffler restricts airflow coming out of your engine, and if youre using performance parts youll need something that wont limit your motor from expelling all that exhaust it creates.
Enter the Expansion Chamber. With no baffle in the chamber, theres nothing limiting airflow except at the exhaust port. However, the banana shape of this muffler helps circulate air around the chamber so that instead of a large amount of smoke trying to go through a small hole, theres a smooth flow of air coming from the chamber itself. Not only will you get a little bit of torque of this muffler, but youll also get a smoother ride, too.
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 the bike frame with a stationary bolt and use the universal face plate to mount the front of the engine.
2.75+ HP (horsepower)
25 to 40 mph depending on the gear ratio and weight
Fuel Economy: 100-125 miles per gallon
Product Requirements
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).
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 a 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.
Package Includes:
On top of our strict quality assurance measures, we also back our engines with an industry-leading 6-month warranty
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. .com is not responsible for injuries and/or damages resulting from operating this motorized bicycle or bicycle engine kit.
** 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.
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 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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