"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 Buggy Depot. 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.

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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 priciples. 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.

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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)
• Free 1QT bottle of BEL-RAY 10w40 oil
• Free 1QT bottle of BEL-RAY 80w90 gear oil

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.