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BBR Tuning Racing Series Stage 4 66/80cc 2-Stroke Engine Kit
66/80cc BBR Tuning Racing Series: Stage 4 Engine Kit Package
When you’re in need of an engine with some serious power, the BBR Tuning Stage 4 Performance Engine Kit is the engine kit for you. With this performance package you’ll 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, an NGK spark plug and Stage 1 CDI for a much better spark, a high performance head for major compression, and a high performance carburetor for optimum speed, you’ve got a motor that’s ready to perform and more importantly, a motor that’ll 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 won’t give you a problem anymore. And if that wasn’t 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 you’ve 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. You’ll definitely need a performance carburetor if you’re looking to run a high performance head, and we made sure that this BBR Tuning package had that standard.
The Smoothest Running Engine You’ve 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? That’s partially because the stock muffler restricts airflow coming out of your engine, and if you’re using performance parts you’ll need something that won’t limit your motor from expelling all that exhaust it creates.
Enter the Expansion Chamber. With no baffle in the chamber there’s nothing limiting air flow 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, there’s a smooth flow of air coming from the chamber itself. Not only will you get a little bit of torque of this muffler, you’ll get a smoother ride, too.
The Spark Plug Dream Team Included
What would a performance engine be without a high quality CDI? If you’re giving your engine more fuel it needs a better spark than your stock CDI will give it. The Stage 1 CDI included with this package was made for performance, with its high performance wire that offers you better connectivity than ever and a high quality Japanese NGK spark plug cap.
Standard spark plugs can’t handle all that performance quite well, so we paired this CDI with an NGK B5HS spark plug that’ll give you the best, most consistent spark you’ve gotten out for your engine in quite some time.
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.
2.75+ HP (horse power)
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 an 1”).
Package Includes:
- Silver BBR Tuning 66/80cc 2-Stroke Engine
- Bonus- BBR Tuning Billet Aluminum High Performance Cylinder Head 66/80cc
- Bonus - 66/80cc High Performance Carburetor
- Bonus – Expansion Chamber
- Bonus - Stage I Performance CDI Electron Ignition Coil (w/ NGK Spark Plug Cap and upgraded CDI cable)
- Bonus - NGK B5HS Spark Plug
- Complete Clutch Cable Assembly with Clutch Wire Clip
- Drive Chain Idler Pulley
- Top Quality Japanese 202 Main Bearings
- 415 Bike Engine Drive Chain
- Drive Chain Guard
- 2-Stroke Spark Plug
- Locking Alloy Clutch Lever
- Upgraded Twist Throttle and Cable With Grip
- Updated 1.5L Black Teardrop Gas Tank (approx. â…– of a gallon)
- Fuel Line
- Throttle Cable
- Gasoline Tank Switch
- Sprocket Clamp Assembly
- 44 Tooth Chrome Drive Sprocket with 9 Holes
- Large Spring (Heat Shield Spring)
- Extension Spring (Recoil Spring)
- High Quality Japanese Bearings on Both Ends of Crank
- Required Hardware and Gaskets
- Magneto
- Kill Switch
- Spark Plug Removal Tool (While Supplies Last)!
- Standard Universal Mounting Bracket
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. BikeBerry.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 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 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.
All bicycles and unicycles come with a 1 year warranty on frame failure and 6 month warranty on parts against any manufacture defects.
All Flying Horse and Mega Motors Brand bicycle engine kits come with a 6 month warranty against any manufacture defects.
All Mini Bikes and Gasoline Scooters and Mopeds come with a 3 month warranty against any manufacture defects.
All Electric Powers Scooters and Electric Mopeds come with a 6 month warranty against any manufacture defects.
All warranty replacements must be pre-approved by contacting our RMA Department through the contact us page. Please provide us with your order number, date of purchase and problem with item.
Once your request has been received, you will be contacted within 5 business days with instructions for sending back the item(s). You must re-package any item(s) being returned as it was delivered to you, with all components, materials and documentation. We will ship the replacement once we have received and processed the returned item(s). If you request for a refund, we will notify you via Email of your refund once we have received and processed the returned item(s). All refunds will be limited to and based on the current price of the item minus any restocking fees.
The following are warranty limitations and exclusions for bicycle engine kit product(s):
• Hoses
• Lubricants
• Gaskets
• Spark plugs
• Standard wear and tear: plastic parts & • components (color coordinated housing, brakes, brake handles, seats, chain and tires.
• Extreme riding, racing or competition
• Loss of time without vehicle
• Vandalism, fire or theft
• Crash or accident
• Unauthorized outside repair
• Warranty does not cover or reimburse any outside labor charges
• Warranty does not cover any towing or shipping charges to and from for any reason including but not limited to repair, return or exchanges
• Defective warranty part(s) are required to be returned for exchange or for new replacement part(s).
The buyer is responsible for returning the products at their own expense during warranty. The buyer will be responsible for properly packaging the product(s) and shipping product(s) back to our location.
The warranty is voided if:
• The product(s) is customized in any way other than manual.
• The product(s) is damaged due to natural causes.
• The product(s) is damaged due to an accident.
• The product(s) is vandalized or stolen.
• The product(s) does not get proper or periodic maintenance.
• The product(s) is used in a manner which it was not intended for.
• The product(s) is modified
Only parts will be covered under the manufactures defect warranty. It is the responsibility of the customer to determine which part is defective. Customer is responsible for repairs or installation of new exchange parts. Only defective parts will be exchanged.
- Easy to install Review by Nick
Rating my first engine kit So I wasn’t sure what to expect everything, everything! Went together fine unfortunately the performance exhaust and carburetor won’t fit onto my bike because of clearance issues but that’s no fault of bikeberry The only real issue I have was the performance spark plug would not fit on the spark plug cap so I had to use the stock spark plug but besides that it’s a great kit! (Posted on 5/13/2018)
- Great kit and customer service Review by Chris
Rating I ordered this kit and the complete bbr frame. There were a few mix ups in shipping but a few quick calls and customer service straightened it out and had me up and running with only a slight delay. Quality is great for what these engines are. Frame is also great. Good welds no cracks or leaks. I will use BB again. (Posted on 5/10/2018)
- It's the best engine I have bought I bought a lot of cheaper ones they don't last I have 6 Review by Jim
Rating It started right up has great power hope it holds up for a long time this is the best is
IAM happy! (Posted on 3/20/2018) - Kit has all you need. Piece of cake Review by R.walsh
Rating Kit came in five days
Had all the parts except the hi perf head. One phone call was all I had to make. Got the head in two days. After watching the instruction.video I knew how to put it together. Piece of cake. Bike started first try. Most excellent. Didn't use all the parts, but they were there if I needed them. (Posted on 2/14/2018) - Definitely worth it! Review by Cbail
Rating This kit comes with most upgrades builders get, but this is all in one box and for auch cheaper price! I would definitely recommend either/both the wide pedal set and vibration mounting brackets. This is to accommodate the expansion chamber. Also due to the larger air filter be sure to double check your mounting before tightening that the carb and filter will fit (just a tip from experience to save a headache) . Other that all fits were great and have had no problems. Would recommend. (Posted on 2/13/2018)
- can't wait to get it... Review by bananaponi
Rating 1 more week then ill be able to buy it (Posted on 1/19/2018)
- It's good quality parts Review by Wesley
Rating This is easily the highest quality kit on the market. (Posted on 11/5/2017)
- amazing Review by ivy
Rating best kit on the market i have the stock carb and know boost bottle and it still does 33mph would recommend it to anyone the only thing wrong was the kill switch i just use the choke to shut it off now (Posted on 3/11/2016)
- boost bottle! Review by Jacob
Rating The boost bottle does wonders for my engine kit. Makes it run way smoother and so much better throttle response.
(Posted on 10/18/2015) - A great kit Review by jimbobjoe
Rating Definitly the best engine kit on the market; I build and sell these things along with go-karts, minibikes and dirtbikes. This kit is the best one I have ever tried. DEFINITLY worth the extra $. The only thing wrong with the whole kit was the kill-switch. I bought a new one at my local auto parts store and the kit worked great.
(Posted on 10/18/2012)
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Posted On: 11/21/2018 By: john morse

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- This Item: BBR Tuning Racing Series Stage 4 66/80cc 2-Stroke Engine Kit
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