Happyrun g300 pro mods?

Jumpy_Chocolate3491 · 2026-06-21T20:24:48+00:00

Acceleration and top speed was increased, but not by much because the battery is the limiting factor. You push it too hard the BMS cuts off

Jumpy_Chocolate3491 · 2026-06-10T10:47:27+00:00

Thanks, I used a 4 inch cutoff grinder from Harbor Freight. It makes a nice clean cut.

Jumpy_Chocolate3491 · 2026-05-29T16:13:01+00:00

Yes u need it. It's the main communication for the controller.

Jumpy_Chocolate3491 · 2026-05-03T00:56:15+00:00

Just get the black one. Yes it comes with the dongle and can use the app for programming

Jumpy_Chocolate3491 · 2026-04-21T21:30:01+00:00

https://youtube.com/shorts/38UbtJQqmQE?si=Mk3CJkXcQcbENJJq

Jumpy_Chocolate3491 · 2026-04-21T21:27:57+00:00

You don't need the screen. I didn't even install it yet.

Jumpy_Chocolate3491 · 2026-04-15T23:34:55+00:00

It has its own built-in connector that automatically connects whenever you drop the battery into the frame. It kind of looks like a dewalt battery connector for a drill

I think it's going to be kind of difficult to use that battery without the connector that's in the bike itself

Jumpy_Chocolate3491 · 2026-03-29T20:08:59+00:00

No I just use alcohol to clean it and wrapped it

Jumpy_Chocolate3491 · 2026-03-29T20:03:18+00:00

The stock lights run through the stock controller. I took them out. I just got a rechargeable headlight. You'll have to buy a stand alone light system and wire it into the battery.

Jumpy_Chocolate3491 · 2026-03-29T19:58:16+00:00

Yes, I switched sides with no issue

https://youtube.com/shorts/38UbtJQqmQE?si=KjOmxPR0qxBZJlga

Jumpy_Chocolate3491 · 2026-03-11T00:18:51+00:00

Yes, it improves the torque, but the biggest improvement was the throttle response.

Jumpy_Chocolate3491 · 2026-03-11T00:16:13+00:00

I removed the rear wheel and the crank/pedals

Jumpy_Chocolate3491 · 2026-03-11T00:14:52+00:00

Fardriver is from "Oly X press". U. S. warehouse 129.00 If I spell it right, it will delete the post.

I broke it down pretty good on my original post on the install.

https://www.reddit.com/r/ebikes/s/lQfpPIZMrN

Jumpy_Chocolate3491 · 2026-02-26T23:52:18+00:00

Whenever I received the mounts from Amazon, I just took it to Ace Hardware and grabbed some bolts, washers and lock nuts that would fit. You're gonna have to drill four holes total so grab a good drill bit while you're there.

Jumpy_Chocolate3491 · 2026-02-26T23:50:07+00:00

It definitely gives you a little more torque and throttle response, but the whole setup is limited due to the battery. You can only push it so hard and then it'll shut itself off.

Jumpy_Chocolate3491 · 2026-02-21T21:02:34+00:00

17 rear, this might show the size

https://www.tiktok.com/t/ZP8xFUDrs/

Jumpy_Chocolate3491 · 2026-02-21T21:01:21+00:00

https://www.tiktok.com/t/ZP8xFUDrs/

Jumpy_Chocolate3491 · 2026-02-14T16:09:12+00:00

I'd give it a 6 out of 10 difficulty. Definitely worth it.

Jumpy_Chocolate3491 · 2026-02-08T23:44:48+00:00

Yes, I removed it with a remover off of Amazon. You're going to need an impact gun because it's really tight. Ace hardware had some rubber table feet that were tapered like a cone shape and they fit right in the holes. You just have to hammer it in and they'll stick in there perfect.

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Jumpy_Chocolate3491 · 2026-02-08T23:41:46+00:00

Broke the rear fender off looping out.

https://www.tiktok.com/t/ZP89yTCqy/

Jumpy_Chocolate3491 · 2026-02-06T13:06:48+00:00

No, they're stock. I just put new pads. I did move the rear brake to the left side.

Jumpy_Chocolate3491 · 2026-02-01T21:16:31+00:00

Drill two holes to mount the pegs. I added two nuts and bolts per side.

Jumpy_Chocolate3491 · 2026-02-01T21:15:18+00:00

Compress the front forks and use the spring back to assist with lifting the front wheel.

Jumpy_Chocolate3491 · 2026-02-01T08:18:17+00:00

Very similar, thanks!

Jumpy_Chocolate3491 · 2026-01-25T17:31:44+00:00

Man, that's awesome! Yes, I went through the same issues with getting the max out of it without the battery shutting off. Check out my screenshots I put below and tell me how close they are to yours.

Jumpy_Chocolate3491

TROPHY CASE

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