BBR Racing Series Stage 4 Unboxing + Engine teardown! 80cc 66cc 2 stroke motorized bike kit 

Years of experience have taught me that NGK is the best sparkplug you can buy. Not just OK. The best.

Literally just bought this kit as my first build. Put it on a Nel Lusso. After assembly I was able to get 39.2 mph on flat ground. I weigh 190 with a 44t. I haven’t even used the high performance carb yet and this thing is a screamer. Definitely needs balancing on the crank though. As well as a 36t sprocket with hub adapter. Next build will be a mountain bike with a stock Zeda 80 and jack shift kit. I ride this thing 40 miles a day to work. Love every second of it. Low to mid power is great but mid to top end this thing comes alive. I actually put the stock pipe on it and got a little better low end tq but lost a little on the top. Swapped for the banana unit. Love this thing though.

Hey Alex, That's the g4 cylinder. I have modded mine to work with a gt5 type bottom. The exhaust is timed great and all I did to mildly port it is to remove inside the exhaust port the upper corners wider and taper the port shape into a upside down trapzoid. The cylinder does have sharp burrs inside ports. Remove these and they actually work good.

Throws coil on ground like garbage..

Bbr is a scam bro. They have the same engine that every kit does they just slap their sticker on it and charge extra

Bike berry is a joke. DO NOT BUY FROM THEM..EVEN THEIR TOP ENGINE IS JUNK.

building my first motto bike. watching everything Ican

I think they should have cleaned up the ports before they sell em especially for the price of a high performance engine do better bbr.

I wann see someone put 2 of these engines on a tandem bike ....

ive had some bad expriences with bbr

Can someone explain if this engine is 66cc or 80cc? I don’t know but from what I’ve heard the 80CC means 80 Chinese centimeters which converts to 66cc for us in America

I'm thinking about getting a bike and motor from bike berry but I don't know what engine to get I'm thinking about either the BBR stage 4 or the phantom 85 cc I went speed and don't really care about acceleration

Your banana pipe the end where the exhaust exits it's is angled different than the one I received from bbr mine come out straight not to the side and way good video

Dyno the engine see if u getting ur money worth I mean it's stage 4 kit for 240 buck not that bad !!!

Wow! He sounds and looks alot like the younger Tom Hanks!

And what’s stage 4 about it?

Less talk and more action. Just show us the stuff and stop yacking.

Just open the fricking box!

What exactly does it mean by stage 1, stage 2, 3, 4....what are the differences?

Excellent video, you know if they ship to Mexico, I would be interested in acquiring one of those engines, either that one or the BT model

Last time i bought from bike berry they sent me a broken engine

Stage 4 engine makes 2.5hp...the other company makes as low as 8hp and some at 12hp

At what stage do they throw a 4 speed transmission in at? That's the one I'm waiting for.

Hey Dude, You got a true piston port inlet system after run it top off to it near the maximum limit you add some reed valves but do not change the piston porting system here is why you do not. When if these reed valves are large enough, to not limit top end flow rates, they will give you great low-end power too. Effectually widening the power band without detuning the over-all power band. You see at low RPMs the piston port will pray out inlet volume which disrupts the flow through the carburetor this is due to back and forth flow over the jets when high enough causes over-enrichment of inlet charges while also lowering the total volume of the inlet charge. Also, the middle power band gets a boost wich getts better as the rpm gat higher right up to and including. Please test this on a trusted dynameter both before adding and after adding the reed valves. And you will see for your self what I'm talking about I saw on your channel one that would fit the bill it just bolts to inlet port. Mine engine had true piston porting and with a good aftermarket set of Expansion chambers got 87 hp @ 7840 rpm at total 492 cc then I bolted on the reed valves it engine got a full 121 hp crank gear 108 hp at the out shaft of the transmission and 99 hp on the ground bottom of the rear wheel. with the two reed valves set on the bike, I could power up in 5th gear all the way to pegging the 140 mph max speedometer using a total gear ratio 4:1 in 5th gear with no super launch type power at and around 3500 rpm but you feel the power come on there at 3500 rpm. Plus you could near idle rev's less than 1Krpms all day around the park to enjoy the shady trees and cool winds off the San Antonio River, all without overheating and while later win fast start races against nearly full out hop-up rods 1/8 mile, 1/4 mile, 1/2 mile, 1/1 mile, and top end one pint fuel runs mostly 6 miles plus at run out clutch out downshifts down to neutral rolls to stop gasoline high test and winning every time too. I got 154000 miles before the rings got bad never a piston after the final set up was all completed. The only motorcycles that would beat my 317 lbs empty weight GT 500 @ 492 cc twin were the triples 2cycle two Kawa's ie: the 500cc triple 750cc triple and Suzuki 750 cc triple "water buffaloes" all of these were well tuned. But none ever beat the economy runs if they could beat me on the speed runs. SO! I had the best of both all in one bike without turning a wrench other than normal PM's and always checking for loose fittings, which is something every cyclist rally should do. This true and factual. All the tuning arts are always beat by low-end torque, which the total product of piston porting with reed valves to properly stop that backwashing at low-revs. THE TRICK IS; getting the reed valves large enough to not limit full flow, yet compacted enough to really limit the backwashing, well at least at a minimum. This system will break sparkplugs insulators due to DETONATION TRICK here is do not cylinder ports up to the magic 180 degrees but to jack-up the whole cylinder barrel to the magic 180 degrees and to keep the lower compression ratio. You do all the right things use real Aviation 200 octane gasoline even advance the spark timing to around 3 degrees to 6 degrees depending on the elevation of the runs use altimeter controlling carburetors you got the winning combination.

Would it b possible to use this engine for a chainsaw 🤔🤔🤔

This engine ran great,but the craftmanship of the engine is poor my bolt holes on the 3rd up grade strip out and were impossible to rethread.,so did two sets of rims from bike berry,and always remeber to locktight your bolts because they come loose. I have bought one engine from the eastcoast and they seemed to be built better from a company called Go MAX TR4o on Bonanza I purchased the PK-80 with the modified piston hole can't wait to see how it rides with my OKO carb...The engine even idles better and smoother'

Stupidly overpriced for the actual hp numbers they do. Zeda Motorsports gives you the best bang for your buck and definitely can provide you with the highest output motor for the money

I just bought a 100cc online for 88total if you want to know we're aske me the one with the red plastic airfilter cover not the black 1

It almost looks like this new 2020 G4 racing engine I got it's just a beast I'm running at 35 mph at only half throttle everywhere

You're better off to just buy the regular BBR engine and buy the high performance head and the mz65 clone exhaust it's much better than the banana pipe and just use the NT carburetor but jet it accordingly. Or if you want to go all the way then buy a windowed piston and reed valve and a bigger pwk carburetor

I actually prefer those 2 bolt chain tensioners as they seem beefier. I just drill out 4 more bolt holes in each corner and they become a 6 bolt super clamp on model. My next experiment will be to wrap the chain stay with i little skate board grip tape. I aslo thought that might work for hub adapter slipage.

This isn't anything spectacular. In 1971, anyone could buy a stock Yamaha 60 Mini-Enduro JT1 (58cc) and drive 43 mph all day using the lowest grade of gasoline available.

Mine got older tonight and it should be here in 4 days this will be my second motor I had ordered the Dewey from uMoto. And right off the rip it was a disaster I got everything put together it wouldn't start for me about a week and a half to figure out what it was well I guess the factory didn't tighten up the clutch now I got it running finally will three or four days after that it broke down again you got it running for about 3 or 4 days I don't think I even put 200 miles on that bike or that motor and s*** the Piston rings broke. It said broke down 4 days out of the week so I said the hell with it and I'm going to head and ordered me the bbr tuning 80cc

For a chain tensioner I get a motor mount tensioner for $15 USD on amazon

I do these full time and what most people think is this motor is going to make there bike way faster witch it's not . Plus if you buy race it's just that not for longevity. These motor kits are built with a 5000 rpm redline witch with a 44 tooth drive gear is 22.5 mph pushing 14.5 volts from the magnito into a 12 v cdi witch is max any faster and often times the cdi blows and the cranks are not balanced so any faster than 5000 rpm the cheap China bearings and seals at high rpm are soon to wear excessively and developed crank wobble witch couses seal seepage witch means idling is poor if it idles at all . So when choosing a motor kit if you are looking for a long life no need to buy a racing kit . If you are looking to race witch means rebuilding the motor often then ya go for it . Most people want the cheapest bike and kit they can buy and want it to do 100mph and last forever sorry that are two things you are not in the money bracket to do . Plus a cheap wall mart bike at 50mph will melt the wheel bearings and races and hit a pot hole at that speed with cheap wheels they will fold up out from under you and you are going to hit the pavement and or the E.R.

bike berry is fine, they have good service. Things are getting difficult to ship from china, everything slowed down. The fuel tank absolutely has to be flushed out or you will soon be rebuilding the carb ....over and over. Toss the supplied fuel line, its junk, get tygon yellow line. Drill through the tank strap and frame, install a rivet to stop the tank flipping upside down. If you try to prevent the tank from moving by tightening the straps you'll pull the bolts off the tank, use your common sense. Same with chain tensioner, a rivet will prevent it ending up in the spokes. I see many kids throwing these kits together without any forward thinking. The rag sprockets work great, if you have trouble with it you might want to find another hobby.

Why are these alleged high performance companies not running a proper Keihin or Mikuni carb and at the very least a simple guillotine type power valve to raise/lower port timing on the exhaust side of the motor ? As for that pipe...throw it in the trash and have a proper pipe builder do the math and fabricate you one. That pipe is sized for maybe a 50cc motor at best. Not enough angle to divergent cone long narrow belly and no proper convergent cone to speak of.

the website advertises this as only 3hp? how such a low amount of HP out of an 80cc? some of my 1/5th scale RC cars are only 30cc and produce over 4hp...

Alright.... But, Alright, ALRIGHT! ALRIGHT, alright... Alright, but alright... Alright!! Alright! Allright. Alright alright alright.

All those motors are shxt the drive gear on them is so close to the seat post on most bikes that it's hitting that or the side of the wheel. I honestly don't know how anyone has gotten more than a few miles off one of these. Nonetheless were even able to mount it.

Some if not most; people replace all the cheap chinese junk with better quality parts. It may cost more but in the end it will be worth the spending.

There Decent reliable motors that can get up to 35 mph ,sure you can get them to go faster!, im getting one again!,

I have a stage 0. Three weeks old. I keep up with cars. Hahahaha

I bought a cheap motor to start off but it'll be my first time out on one of these 😂 wish me luck out there!

These engine kit unboxing videos all look like the warehouse workers play football with the boxes

You rock Alex!!

Must be a cheap china junk brand. Otherwise, it would come in a better box.

This guy doesn’t know anything and hey that’s called a cdi buddy not a wire thingy with a cap

That’s a cool upgrade, throws it on the ground

This Video is dated. Does BBR have more upgrades since this model was released? Tia

Hi bud love your videos one thing I would like to see is a phatmoto bike with a racing engine

Hi , l want to have the bike equipment to help me. How much do they have .

the best expansion chamber is the one calculated for your engine

Hey motored life can u message me I need ur help with some stuff thxs

Have you Check out the new Waters cool motor from zeda motor sports b

40mm pk80 on eBay $100 engine only. Don’t pay too much people

*DRINK EVERY TIME HE SAYS ALRIGHT... 🤦‍♂️ 😡 CONSTANT ALRIGHTS.. Jesus!!!! Alright.*

I hope bikeferry payed you to do this video stage 14 😆

Mine developed a nasty air leak. Shitty engine for what I paid.

Get some Malossi piston pin clips.

Does the stage 4 kit need gaskets and, if so, how many and where?

What's the small yellow plastic filter thing for he did not say

Is a pull start unit available for the BBR engine?

Enjoy your enthusiasm and the unboxing vids are cool because we get to see different products . Would it be possible to do 1000 / 5000 .? mile checkups to see which products tend to hold together the best ??? Maybe if possible contact some previous clients and get user input from various owners . I could subscribe to that

Really? This guy doesn't even know what an expansion chamber is . Tosses off that pipe without a clue hi how it works. Dude.. READ A BOOK!! Start out with Gordon Jennings two stroke tuner's hand book.

I got 2 of these. one I got on a bike I just got threw the 1st gallon working on my second gallon mixing 5 ounces to one gallon, 3 gallon will be 3 ounces per gallon. so far averaging 25 mph. my old engine no name brand 95 bucks shipped I hit 40 mph. so still in test mode I guess. and I'm running a poo poo pipe not the banana

You should cut one of those high performance CDI‘s and a regular one in half I haven’t seen a video yet it’s like the mystery is it really better check the wire and cut them in half and find out

I had crazy guy hop out in front of me at 5am in the on my way back to get a coffee for work screaming that i need to stop driving past his house and waking him up! Wtf ! I have a stock exhaust on my bike so its not loud . dude wants to fight me over it . im still gonna drive my bike wherever i want !

Which motor kit is the best performance racing engine for a bike I want my bike to go fast have some power I just don't know which one to buy I just been searching and looking at every single one I can think of and I just don't know which one should I get and I don't want to spend money on something it's not going to be what I'm looking for.

Those hp numbers are HORRIBLE for the price. I'd rather build my own and make tons more power for cheap.

Can you do a review on something off of gasbike.net or kingmotorbikes just to see the quality of there motors because I'm looking at there 4 strokes but I don't know if there sure is a scam or not

how much is this kit[if it's still available]?

Good god, the welds on that "expansion chamber" look worse than mine, and mine are "booger welds" at best...

Can anyone please help? I have an 80cc pedal and pop. I was riding around as normal then i pull in the clutch and for some reason it revvs up so much...?

Those carbs are junk the original ones are better

Mine runs over 60 with a chainsaw plug but barely 30 with stock plug

question tho does this engine fit in a beer crate?

if only i had such a motored bike scene in new zealand your vids is as close as i can get to on hand information much respect

Have you done anything with the bullet train engine yet? I want to buy myself one but iam waiting on you review on it installed on a bike

Bike berry products are a waste of money

Fuck! Open the box already!

What’s the top speed on the stage 4 and what bike would you recommend to put this on?

Só esse cabeçote aí que u acho paia só mais o de vela deitada

Can they be used for street riding. I'm retired but wanting to enjoy things. Any pointers

I know you put this out over a year ago, but I'm thinking of getting the 2020 version, of this exact Motor. My Question is, is it worth it?? Is it a Fast Motor? Reliable? Worth the $? I'm getting the whole kit, its supposed to be the same Exact motor, the good Japanese Bearings, 40mm intake, banana muffler, the whole kit for 179, and change. If I can tune it, and putt around at 30 yo 40 max, i would be happy. Any info you would share, will be greatly appreciated!! Madd Respect Brother, for all You do!! I subbed up, and binge watching! P.S., I got My eye on FRANKENSTEIN!! WOW!!

Thumbs up

I use a piece of inner tube between the tank and frame... works awesome

What a bucket of a motor

Just got that same motor its junk hasn't ran since I got it an bbr constantly gives me the run around

You should unbox, rate and test an Amazon engine kit.

Iron boy Robert Downey Jr jr

Can any one help me with mine.when im on wot it won't let me rev all the way it just gets louder

If that’s stage 4 then I have stage 6 😂

My drive gear keeps getting stuck when starting the engine. How do i fix the drive gear so my bike can start running

the bbr kit says that the bikes wheels should be 26' is that exact or can it be a larger wheel?

What do you do about the casting burrs? Should you file them? Use a file? Do you need to clean with some carb cleaner after or wipe with an oil/gas covered rag? If you could explain or point me to a video where someone does this that would be very helpful!

@Motored Life Hey, May You tell me, how is that Engine Holder (You used to review the Engine on), is called,? I'll be Really Grateful 🙏🏻,

There's a guy/shop in Montana (I think) that actually cleans up the burrs, machines the rod and case for roller bearings instead of plain bushings, and does a lot more work to them. The engine is called Little Demon or something like that. Cost is like 500 bucks, but you get what you pay for. I almost bought one for my build but wasn't sure about clearance for it on an 07 Iron Horse Maverick 4.0 suspension bike. Instead I mounted a Poulan/Husqvarna 42cc chainsaw engine. I modified the centrifugal clutch to accept 420 chain and tried to use the rear derailleur to have 3 gears. I DO NOT RECOMMEND DOING THIS. The bike would easily go 60+ mph but scary as hell. Especially when the chain bound up and tore the derailleur off. Single speed now 😂.

I purchased the same stage 4 about 2 yrs ago my piston is black on top was used to flat land in Florida and didn’t break it in more than 75 miles put 1500 mi atleast I’m replacing my rings and already ordered 5 sets ring better deal and my clutch lever and cable broke just routine maintenance on the several motorized bicycles I have it mounted to a 26 1/2 inch DVR tuning motorized bicycle frame with the gas tank built in it And had to modify the frame mounting a bit new to the bigger size motor studs in the front other than that I love my bike thinking of getting a shift kit put on sure on how to do it with that bike considering it only has one gear on the pedal side

Waiting for that Frank Video.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!