- Description
- Requirements
- Kit Includes
- Specs
- Fuel
- FAQ
Description
Requirements
Kit Includes
Specs
Fuel
FAQ
Engines Built for Performance
Cheap engine kits are made for tinkering and last about a month. And expensive race-ready bike engines aren't user friendly.
But BBR Tuning Racing Series Engine Kits are made to run fast, last for years, and compatible with nearly any bike under the sun.
Stage 4 Racing Engines
Stage 3 Racing Engines
Stage 2 Racing Engines
Stage 1 Racing Engines
BBR Tuning Racing Series Stage 4 66/80cc 2-Stroke Engine Kit
- Japanese 202 bearings
- Reinforced Clutch
- High Quality Crank & Piston Assembly
- Copper Head Gasket
- Heavy Duty Hardware
- 40mm Intake Manifold
- BBR Tuning Billet Aluminum High Performance Cylinder Head 66/80cc
- Expansion Chamber - Chrome
- 66/80cc High Performance Carburetor
- NGK BR5HS Spark Plug
- High Performance CDI
- Double Wrapped Magneto
- NGK BR5HS Spark Plug
- 44 Tooth Rear Drive Sprocket
- Chain Idler Pulley w/ Bearing Wheel
- Rear Wheel Sprocket Clamp Mount
- 2.5 Liter Black Gas Tank (over 1/2 Gallon)
- Fuel Filter
- Vitta Fuel Line
- Clutch Lever
- Clutch Cable
- Throttle Handle
- Throttle Handle
- Throttle Cable
- Installation Guide
- Chain Guard
- Spark Plug Tool
- Drive Sprocket Removal Tool
Installation is a breeze
No extras needed, no mods required. Just follow the simple install instructional video provided, add fuel, and you’re ready to ride.
And it's the perfect fit on any bike
BBR Tuning bicycle engine kits are universally compatible to fit almost any 26" V-frame bike.
So ride with an engine you can trust!
BBR Tuning Racing Series Stage 4 66/80cc 2-Stroke Engine Kit
1K+ Sold | ★★★★★ 100+ Reviews
✔️ 25-40 MPH Top Speed
✔️ 100-125 MPG Fuel Economy
✔️ Fits 99% of 26" V-Frame Bikes
✔️ Easy Installation
✔️ Backed by 6 Month Warranty
If it's not BBR Tuning, it's not worth it
Because the BBR Tuning 66/80cc Stage 4 Racing Series Engine Kit does what other engines can't.
Speed You Want & the Range You Need
The BBR Tuning Stage 4 bike engine kit's equipped with a high compression head that's able to give this engine 2.75+ HP with top speeds reaching 25-40 mph. It also comes with a high performance carburetor for optimal airflow for more torque and speed. And they all come together to give you around 100-125 mpg.
That's enough power for riding fast, taking inclines without losing speed, and getting you where you need to go and back on a single tank.
Value Prices, Quality Engines
We keep our costs as low as possible while maintaining the highest possible quality. Some charge under $100 for inferior performance, while others offer elite quality at sky high prices for $500+.
We’re here to make sure you and your wallet are happy without sacrificing quality or value by offering our engines starting at $244.95.
Quality parts for quality performance
On top of strict quality control standards, each BBR Tuning Race Series engine kit offers
- Performance upgrades designed to maximize speed output and horsepower.
- Angled head for smooth throttle response & cold starts.
- Japanese 202 main bearings for smooth operation.
- Upgraded clutch components instead of weak, standard clutch pads.
and more to keep you revving for miles and miles.
Don't Just Take Our Word For It!
Watch how BBR Tuning Stage Race Series engines transform a standard bike into a motorized head-turner.
Backed by the Best Service in the Game
Enjoy 6 months of full-engine coverage
We're available by Email, Phone, Text, or Chat 24/7
Pay in 4 interest-free payments so you can ride now and pay later
Check out our entire line of bike engines below!
Customers said this is a powerful 2-stroke engine with strong performance. Most praised it as "screaming demon" reaching 30-50 mph. Strengths include quality parts, expansion chamber, billet head. However, some reported cheap fasteners, carburetor/CDI failures, poor customer service response times, and missing parts. Mixed feedback on reliability.
- Man does this thing haul. Especially after I put on a reed valve kit. I am loving this thing.
- Has far more power than expected, everything needed is in the kit, its all solid, the carb is super nice
- Solid motor kit. I ride mine everyday. I got mine screaming at 40 mph, fast.
If you’re going for your first engine kit this is the one to get. For my bike I needed to put together a few parts and pieces from the base kit and the performance parts to make things work. All the parts are quality pieces and other than mixing and matching a few things it went together really well. I’ve put about 4 hours of ride time on and haven’t had any issues. The expansion chamber takes a lot of the vibrations out, and paired with the boot bottle it’s a smooth ride.
Engine runs great. Also great customer service. My only disappointment was in the deluxe high performance expansion chamber. The weld job was not tops by all means.
All parts look good. There were 2 arrows on top of piston. Ring gaps went to the intake side w piston notches. Using an orange co chopper bike so mounting clamps would not work. I made my own. Rear brake will have to go to upper frame rail.
This was my first ever kit to put together and I put it on a bike from 1995. There were a few kinks and things I had to work around because of the fitting from the style of the bike but the kit is very flexible in doing so. The bike runs great so far and I haven’t had any problems yet. 2 weeks in. However, the screws and nuts are kind of cheap and very easy to strip so be careful.
Fantastic customer support!
Overall I’m very satisfied! Thanks Bikeberry!
I love nice job
I’ve had the stage 4 kit with stock carb for a few months and it’s been pretty fun, I hit 46 mph with 36 tooth, now I’m just having electrical issues, like it sparks when it’s not supposed to spark. But overall it’s a screaming demon that gives u smiles for days
This kit blew my mind. This is my first bike and man is this fun! Has far more power than expected, running a 44 tooth sprocket on an adaptor it hits around 30-35. Everything needed is in the kit, its all solid, the carb is super nice as well . Can't wait to get more time on this thing. Easy to install and man it romps. I'm sure ill get another just because.
Would love to figure out how to make it go faster I'm sure you guys have some options
As far as the product and customer assistance go, I can’t take nothing away from Bike Berry! They are great!, and on point!
This stage 4 kit does not exactly fit my bike so I am not able to take advantage of the performance parts! However, I was able to cram it into my frame!
Work in progress!
Note to self: buy a better bike to fit the motor! Lol!
Nice little engine bit difficult to install seems to have quite a bit more power than the last one I bought
It's a nice little engine has a lot more power than the one I previously bought seems to have enough power to get me up hills with no problem
Because I can't afford to go big I took on a motorized bike. I really like the way this engine sounds. That expansion chamber gives it a rich 2 stroke sound. You know that kind that aggravates the neighbors. Mine is on a Kent Bayliner. The stage 4 head is sick! It makes it stand out better than any other engine on the market. My stage 4 gets me up to around 36 mph. I had to customize the flange on the exhaust, but that was ok. Not a huge project. If I could have given it more stars but wouldn't let me. I took the decals off and painted the case except for parts I am going to polish. I also plan to engrave it. Will post more pics when it's complete.
It was easy and fun to install but after a few days of using it the throttle cable broke. I hope it covered by a warranty. Not sure tho. But it was fun while I had it working hope to have it back up and going soon. Also need to buy a set of rims with the disk breaks because the rim breaks don’t last long.
It work amazing for a week then it started to die randomly until it destroys it self from the insides good news i got new part for ir from them so im glad.
Puts away any average daily with ease
Love the kit still waiting for my exhaust tho
Ordered it spent over 400 dollars they withheld the order for a month without telling me anything then when i finally got in contact with them they told me that i somehow bought something out of stock and all they said was we can either wait until they have it and ship it all out or ship out what they have and wait even longer for something i should have gotten like a month ago and still havent gotten the first part of the order
Customer service is horrible. Ask a question and it takes a day to get a response. Customer service is only open west coast time during business hours. Most of us are installing on weekends. I made a stupid mistake with my install that wouldn't have occurred if they were available to answer my simple question. My engine is ruined and they have zero empathy. Plus, a month after receiving SOME of my order, I'm still waiting on parts. Which are now useless.
The carburetor broke on it's fourth use other than that it came with a backup carburetor that seems to be more reliable. The CDI was faulty and had to order a new one. The only two good parts that really came with with kit was the expansion chamber and the heat dispersion cylinder head. Mildly disappointed with this purchase. Some parts are just cheaply made and had to get my own. But after a bit of messing with it I managed to get the kit running the way I remembered it.
Arrived on time and in great shape haven't installed yet but can't wait, thank you so much for the great service.
Good quality
Strong engine no problems at all
Good engine only thing that kinda sucks is the chain
