184CC BRUTE MUSCLE CONVERSION & REBUILD SERVICE FOR YOUR 150CC ENGINE (BUGGY, ATV, SCOOTER)

  • $649.00
    Unit price per 


"BRUTE MUSCLE" POWER BUILD OVERHAUL SERVICE

184cc · STROKED · BORED · HI-COMPRESSION
Send your engine to us; we will rebuild your worn out 150cc and turn it into a race-ready 184cc!!

Our 184cc BRUTE MUSCLE upgrade is a massive improvement over what you're used to getting out of your old 150. Tires will spin and dirt will fly around the trail or track, even with the most aggressive tires. Want to know how it works on the inside? Read our very detailed article on the advantages of big bore and stroker builds.

This listing is for services provided by BDX Performance. You must send in your core for work to be done. We will prep and install the BRUTE MUSCLE package. Your engine will be returned to you as renewed 184cc, fully tested and ready to bolt in. We will also install other performance parts not listed here if you purchase them at the same time as this service.

RIDE NOW PAY LATER Check out the 6-month financing offer above.

ONE NASTY BOLT-IN RELIABLE POWERHOUSE

REAL POWER · REAL RESULTS
This ain't an eBay kit we're throwing on your engine. This is one of OUR secret recipe builds - A BDX EXCLUSIVE. We've blown up a bunch of test engines over the years getting to this level of power for price. And have modified and tweaked components with our own in-house equipment, machinery, and ingenuity to balance power with reliability. Unlike others, this setup will last you MORE than just a couple season. When taken care of with proper filtration and lubrication, you can expect our builds to last as long or longer than stock. This build is rock solid on reliability and BACKED UP WITH OUR 1YR WARRANTY.

See that BDX 184 kicking dirt going up the hill in the video?
That 184 engine was built in 2012 and still starts on the first crank. No smoke, no oil, no nothin'.

The expensive lessons in GY6 design that we've learned at BD are what make the difference in power and reliability between our builds and other options. Other places aren't even confident enough in their own skills to provide a warranty AT ALL on their builds.

Think about it. Don't pay for someone else's Science Fair project. Or pay hundreds extra for a middleman's sticker. We machine our exclusive top-level parts HERE IN VIRGINIA, USA and offer them to you directly.

We know you can buy lesser parts elsewhere and do it yourself, but by the time you've blown it once or twice is it really worth it? And there's no way you're going to get anywhere near the power density per CC that you get from the BRUTE package.

Skip all of that hassle - Go BDX.

Premium USA Boring and Machining





Our borework is done on 4,500 pound machinery built for precision. The end result is a center bore far better than stock. We hold a tight consistent tolerance to the outer wall of the 62mm cylinder sleeve. This contributes significantly to long-term reliability and cannot be achieved with 5 pound handheld drill boreout tools the other guys are using.

Custom BDX 184cc piston. Machined in-house, Engineered in-house.



This isn't a random piston thrown into the build from whatever popular brand. We specifically engineered and tailored this piston to this exact build combination.

Critical parameters like squish band, deck height, compression ratio, ring landing thickness, all dramatically change the performance and reliability characteristics of your engine. Our specs are all calculated, known and nailed down. Ask other sellers if they even know what these terms mean!

Go ahead, we'll wait with our engineering toolkit open to check whatever fuzzy numbers they come back with!



Our perimeter dome matches the angle and contour of the cylinder head, with a tight deck height and a small squish band.

The dish of the piston is tuned to hit our target high-compression ratio of 10.35:1. We wanted you to be able to run pump gas reliably without spark knock issues. For reference, stock is 9.2:1. Generally speaking, the higher this number is, the bigger bang and power you get out of the same size CC. So no, due to this and many other factors, not all 184cc builds are created equal!

THE BDX SPEED SHOP

You won't find the same thing coming out of China, Taiwan, or anywhere else in the States. Our engine packages are exclusively available here at Buggy Depot.

We carry our own brand. Others can't do the math and don't understand the underlying design principles. If you see a builder riding the coat tails of overseas companies and throwing a bunch of brand names in your face to sell their work, watch your wallet! We cut out the middle man and provide badass purpose-driven builds for far less.

BUILT WITH PRIDE IN THE USA


Every BDX build begins by doing the math right from the very start. Firmly understanding how turn the optimal numbers into physical parts, we use these calculations to inform and direct development of the final pieces. This allows us get bigger and more dependable results for a smaller asking price.


CHEAP BUILDS AIN'T CHEAP!

THINKING OF DIY?
OR DEALING WITH A BACKYARD BUILDER?

1. How many times can you afford to rebuild in order to get it right? or "right enough"
2. How much downtime will you have sending your engine back and forth to your "builder"?

Think you can avoid hassle by using a "no machining" big bore kit?

THINK AGAIN!








We've been there and done all of that, and have paid for our share of R&D so you don't have to.

Do it right the first time!

TRANSMISSION SPECS
Variator BDX S2 115mm Variator
Clutch BDX S2 Clutch
CVT Action Sliders x S1 Spring
CARE SUMMARY
Crankcase Oil 800ml 10w40
Gear Oil 125ml 80w90
STARTING
This is a HIGH COMPRESSION engine, so you'll want to learn how to start the engine correctly. No special starters or batteries are needed.

When starting cold, if the crank slows down on the compression stroke, simply "bump" the key. Turn the key back to "Run", then forward to "Start" within about 1/2 second. This will bump the piston past the compression stroke and keep the crankshaft moving. This will ease with breakin.
FILTRATION
Use a genuine UNI FILTER only. No K&N filters, No cheap Chinese foam filters. Absolutely no stock filters.
BREAK IN
Break-in information is in our 184cc manual. Download it here.

Adjusting valve lash is not required and not recommended during or after break-in.


HOW THIS SERVICE WORKS

  1. Order from this web-page.
  2. We will email the mailing information with the order confirmation/receipt. (Look towards the bottom of the confirmation email)
  3. Remove your engine, DRAIN OILS, and clean debris from your engine.
  4. Send us the engine, and we'll take care of it from there!

EVERYTHING INCLUDED AT THIS PRICE

  • BDX MACHINE BOREWORK MACHINING AND PREP
  • BDX INSPECTION AND PROFESSIONAL ASSEMBLY
  • BDX FULL TEST ROUTINE BEFORE SHIPPING
  • BDX 62mm Big Bore Cylinder Kit
    • BDX-Spec 62mm Cylinder Body w/ Thick-wall Sleeve
    • Piston Rings
    • Wrist Pin & Clips
  • 60.8mm Stroker Crankshaft & Crank Bearings
  • BDX 184cc Stroker Hi-compression Piston
  • 184 Optimized Transmission
    • CVT: S1 Sliders
    • CVT: S1 Spring
    • CVT: S2 115mm Variator
    • CVT: S2 High-stall Clutch
  • New A12 Camshaft
  • Cylinder head rebuild
    • New valves
    • New seals
    • New springs
  • New timing chain
  • New timing chain guides
  • New oil pump
  • New oil pump chain
  • New drive belt
  • New clutch bell
  • New final transmission bearings
  • New seals and gaskets (excluding reverse)

Please note: We will also install other performance parts not listed here if you purchase them from us at the same time as this service.


Every BDX Speed Shop engine build is covered under warranty.

Other "builders" try to slide out from under their own work and avoid warranty by telling you "race engines" aren't covered. That's some BS.

BDX 12-Month/2,000 Mile Limited Parts Warranty

The new components of your engine are warrantied for 1 year (365 days) from the date of delivery or 2,000 miles, whichever condition is met first. The warranty covers issues with the parts that arise due to defects in material or factory workmanship.

Conditions and exclusions:

IMPORTANT! You must use a genuine UNI Air Filter as a condition of this warranty.

-If the engine is run for any period of time without an air filter, the warranty will be terminated.
-If the engine is run for any period of time without proper lubrication, the warranty will be terminated.
-Belts, CVT weights, and clutches are not covered under warranty.

Buggy Depot does not accept returns or refunds on engine builds under any circumstances.

Question: Can I modify my engine without voiding the warranty?
No. Each component was chosen to match with other parts of the build. Changing parts of this build will most likely reduce performance, or cause damage. If you're going to do it anyway and sacrifice your warranty, contact us before modifying the engine for advice.

Warranty Procedure
If you think a component should be covered under warranty, please contact us online and submit a warranty request.

IMPORTANT! Buggy Depot does not operate through 3rd party repair shops, thus under no circumstance shall Buggy Depot be liable for service costs by any 3rd party shop or service provider.

STANDING BEHIND OUR WORK

Issues are going to happen anywhere.
Read what people say about us.

"The short version of my story is that my 1 year old upgraded performance engine with less than 10 hours of use began to have serious oil leak issues... I reached out to BD and eventually connected with Travis to explain my dilemma via e-mail as that is the approach. I halfway expected the reply to be "we are really sorry but your engine is beyond the warranty period, so best of luck to you". Instead, Travis and I had a real discussion about some of the issues my engine was having... he agreed to pay for the entire cost of shipping and repairing my GY6 engine...

I just want to let others know that contacting BD via the methods defined on the website certainly does work and that you will get the help you have come to expect from the folks at BD. ... be calm and patient as the folks at BD work to make things right so they can continue to be a valued business to all of us. Well Done BD and Travis!!"

- William J. (175cc Engine Build) Read the full review

William's engine was 10-months past a 2-month warranty. However, it was clear that the original error was on our end. If you have a legitimate problem, we'll make the situation right. When others would give excuses and hang you on technicalities.

 

Racing Engine
Our Buggy Depot 175, 184cc performance engines are for off-road racing purposes only.

IMPORTANT INFO

 

SUPPORT VENDORS WHO

SUPPORT THE SPORT!
Your order helps fund future upgrades!

BDX DIGITAL GY6 DYNO PROJECT
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REAL TESTING, TO SHARE REAL DATA

Our testing is funded 100% by your purchases.

Don't fall for claims elsewhere that are too good to be true! Save money and get performance parts that actually MAKE A DIFFERENCE!

HYDRAULIC BRAKE DYNO. NOT INERTIA! Allows us to find weak points and make precise engine improvements.
USA-MACHINED BIG POWER BUILT ENGINES
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175CC, 184CC, OR 187CC SCREAMERS!


Quotes from some GY6 engine builders will make you crap your pants. Our unique R&D nails reliability and POWER without adding BIG INFLATED COSTS.

· Affordable GY6 175cc big bore crate engines
· Custom GY6 hi-comp stroker pistons (up to 190cc)
RELIABLE POWER BUILDS UP TO 187CC
R&D DONE RIGHT
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GOING STROKER? YOU NEED THIS PISTON

Made specifically for +2.5mm or +3mm stroker builds.

Our GY6 stroker pistons RESOLVE the common causes of engine failure when using stroker crankshafts.

Designed and machined right here in the BDX SPEEDSHOP! Use one to stroke your engine up to 187cc without janky unreliable cylinder spacers!
HOMEGROWN AMERICAN WORK
AND INGENUITY
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UPGRADES MADE IN USA - BUILT IN USA

Where do cheaper China parts outfits send your money?

We put your funds to work right here in the USA making these machines faster and stronger!
Thank you for your business!
GET ANSWERS YOU NEED
Don't spend more than you need to fix or upgrade your machine. Get accurate advice that will save you money and hassle. Read the rules, and join the conversation!