Building the World's Best 125cc Dirt Bike! 

Thanks for watching Dave

👍👍👍👍❤🎉

Why can't Yamaha do half this stuff from the factory? It wouldn't cost them much. This bike will be mostly the same 10 years from now.

@@justincoats7236 because it takes the fun out of building your own…. The cost would be astronomical, & all other manufacturers would have to do the same…. Yamaha as a brand have always produced a very capable bike. It’s up to the owners to make it how they want it. 👍🏼. Also what Roland’s made will be similar to a Factory spec Motor. 👌🏼

Thanks Kevin

Thanks Darrell, We have some more cool build videos coming soon. The next one is pretty special :)

Thanks for watching Benny, wait until you see how well it goes on track... ;)

@@999lazer can't wait. Sounds lovely a crisp !! Looking forward to seeing the dyno numbers

Thanks Ian

That would be cool!

sounds awesome Andy, its going to be a crazy fast Lambretta!

@@999lazer hopefully with a 5 speed gearbox 90-100 mph😜👍

Not long to wait until you see that happen :) Thanks for watching

Glad you enjoyed it

Thanks for watching Corey! I'm so happy with how it turned out :-D

haha, I think he'll like that

Thanks for watching. You wont have long to wait to see the first ride:)

Great suggestion! We'll see what we can do :)

Those carbs aren’t good for high level racers. No one ride with those in EMX125 or schoolboys1 in the US. Many people were putting Keihin carbs on KTM’s too as it’s better and easier to jet than Mikuni

Ya. I agree but it would be interesting to see how different the carbs act on a dyno/track.

Lectron and Smart carbs been around since the 80s they have always been trash 😂

Thank you! Cheers!

Thank you! Cheers!

Thanks Tony

Thankyou

We'll ask him :)

@@999lazer lovely mate! :)

Thanks for watching

no as it doesn't affect the gears in that way. My personal bike is a 2011 Y125 which had the gears "super polished" when it was new and it is still going strong.

haha, keep watching. We have another big bore build underway. It wont be long until we release the first episode :)

I believe so. You can get in touch with Roland via www.motocrossdirect.co.uk/

Show us the Dyno with your 50 making 25ps.

Funnily enough i used to wear Lazer helmets back when i was a kid, i loved the designs so much. That's actually where the 'Lazer' in 999lazer comes from!

Good question, we will see if we can do a comparison. Thanks for watching

I have a GYTR kit in the stores some where could be worth digging out to compare On track it’s good but needs the 113mm rod to complete the package

Hi Alex, Roland's company makes the rads. They are pretty trick and I have them on my own 2010 YZ 125 too. His contact details are on www.motocrossdirect.co.uk/

@@999lazer thankyou mate, keep up the good work👍

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Race Rads. You can contact Roland at www.motocrossdirect.co.uk/

its a 2023 YZ 125 Rumpel

@@999lazer love the white and red look amazing

its not bored out its a legal 125 motor , but we did put a 500cc 2 stroke in a YZ 250 chassis ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-uEmwZHB_Xag.html :)

​@@999lazer yeah man, ive seen that its sick that bike is love the colours as well man excellent build

It isn’t bored out, nor is the stroke any different, it’s a longer rod to change the rod-ratio, and a shorter piston to retain the correct piston deck height.

@@mozer30 i thought thats what porting the barrel is technically boring it out but i dno i aint a mechanic lol

Cylinder is just ported not bored out, still 125cc he says that in the video, not cheating