GY6 171cc / 172cc BIG BORE BUILDER ENGINE KIT [A++ PERFORMANCE]

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If you are looking for the absolute easiest way to get great performance out of a GY6 engine, there is no better way than with a big bore kit! This Is the Rolling Wrench Builder engine kit. It will come with everything you need to build the engine for your scooter, buggy, motorcycle or Ruckus. This is a qmj157 long case bottom end engine with a full 61mm 171cc big bore top end. It will come with every bolt, dowl, gasket, and miscellaneous part to make this a running performance Gy6 engine. Its a all in one builder engine kit. This video will show you step by step how to install a big bore kit in your GY6. Use this video to do the install on our builder engine kit. The GY6 performance big bore engine kit will pump the performance in a major way! The 171cc forged 61mm drop in big bore kit, paired with our ProBld performance cam shaft, big valve big port head, and 28mm PWK slide carburetor with jets will blow your mind! easy drop in power that wont break the bank.

[idkwhatnametochoose.]

Thank you, for putting these videos about assembelling the motors i realy learn a lot and just sucsesfully changed the cylinder head from my gy6 150cc .

[rolycata]

This video was awesome and very very helpful. I’m new to this hobby and I definitely enjoyed watching/learning how to put this engine together. 👍🏻👍🏻

[HReality]

Old guy here.. just noticed stretched ruckus in my feeds and started looking around. Presently Im like 2or3 miles from work and figure it would be great to use and leave the car parked. But, man this is one deep rabbit hole. A fun rabbit hole.. but deep

[jimmyalgiere]

Hi its Jimmy just watch your new build and could not have had a better exsplaned in detail nice and slow pace easy to understand what you are doing . This session of your build would be nice to send to all small engine repair college to show and tell class.

[eduardogonzales]

This just a needd, for my scooter gy6 150cc is upgrade rigth now is a modificacion 171cc, and you help me for the instruccion is a perfect, thanks bro !!😎😎😎 saludos desde Mexico ✌🤟

[Libertas_Primus]

Hey man, great Ruckus idea for you. Build a hybrid ruckus. A hub motor up front with regen capabilities. Change the twist throttle to two thumb throttles that can be pressed simultaneously or individually. One thumb throttle for the engine and one for the. Motor. Another thumb throttle on the left grip to activate regen. battery pack and bms under the seat. The hub motor will really give you the torque and power to merge and move around in traffic when it’s is needed. Can add to top speed when needed, and will increase the fuel mileage also. I’ve been wanting to realize these ideas for awhile but you have the resources to make it happen. It’s the best of both worlds. Would definitely be helpful on a GY6, but would really shine on the stock ruckus crowd.

[cn]

Now I’m having a Mikuni round slide carb, better clutch installed, and I’m porting the head! Hopefully it rippss

[Jalum]

I installed your 171cc Pro Bld kit and followed your video step by step, but after tightening the rockers down the engine will bind a little bit then turn smoothly until it comes back around and binds up again in the same spot. What's the possible issue(s) it could be?

[Lucky]

I like your videos, keep up the great work.

[AzimbaJames]

Thanks again how will I get the parts order from you

[vincentnavea]

nice video. watching from the Philippines

[irocss]

Watched this again after purchasing a1p57qm project bike (boom brand, like a rugged) and I can't wait to get into the build. This video is awesome in an auto tech built lots of performance car engine no bike motors though but I can see it's the same just way smaller scale. More i just gotta test mine apart. Doggie or what HAS to be done and then plan the build. I can't afford this compete set up but I'll probably do some of your upgrades. And buy my needed stock replacement stuff from you if I can.

[urbak]

Getting the monster big bore kit back in stock for the qmb139 any time soon?

[noeldiaz]

Hello from new Britain Connecticut, I have a NCY 171cc kit with 61mm, 11grams roller and racing clutch, 30mm carburetor but I don’t run more than 55mph, I want to gear up what is the best gear you recommend for my upgrade.

[JoeyDoolittle-rq]

Can you show a video of the 172 cc big bore kit on a extra long case for a 150 cc scooter with 16 inch wheels

[fredfeldmeier]

Very nice video
Thanx..
Let me ask you a question..
What kind of engine the honda navi have..??
Thank you 🛵

[zentient]

You remind me of Rich Vos for some reason haha thanks for the video though. Im about to go all in on these little motors.

[nigelmcclure]

Great video brother I really enjoyed it buddy

[keithkunik]

Bro I’m ordering from you every time!! Very informative!!! Ordering the big bore next time I put on road !! The 200 plus kit fit on a Ruckus??

[nirunboonkum]

I just upgraded big bore kit and cam

Engine revs nice and good power

But feels like in need more gear
Ore higher roller weight in cvt?

What you suggest?