r/betamotorcycles

Hello. I’m trying to compare the differences in 2 used bikes I’m looking at on marketplace and would love insight by anyone with experience.

I’m still a beginner rider, but looking for some more power and lighter weight than my klx250 while sticking with a tame power delivery and luggable gears. I mostly ride 2 track trails, forest roads and looking forward to SM 500 and BDR trips in the future.

I’ve found 2 similar bikes on Facebook marketplace that have similar prices. The 2025 480 x pro has more mods for performance and looks (rad fan, replaced oil pump gears, larger tank, luggage rack, light rally tower, etc) but it has 2,500 miles on it. The 2024 500rs has 500 miles but mostly stock.

If both were priced the same are there any differences or things I should consider? Hard to find good info on the differences but it seems like same engine. I sometimes ride 45 minutes of pavement to the forest roads and sometimes load in truck for trails, but road comfort is a factor.

Got a 21 390 and took it out on a trail ride over the weekend and had the hardest time keeping it cool. Looking to add a radiator fan anyone have recommendations on brand that have been using trail tech seems like the most highly recommended but kind spendy for what you get imo.

My girlfriend wants to get into dirt bike riding. She has ridden a KLX140r a few times. She is pretty good (I have ridden all my life and ride a KTM EXC 300). So I am looking for a bike.

Problems:

KLX140r: She is decently tall (5'8"). I think the 140's, 125's etc are a bit short for her

230's/250's: Good height, but they are massively heavy.

KTM / Husky EXC 150: Just a bit too tall, quite expensive, can't find them, etc.

Beta Xtrainer 300:

The height and weight is actually pretty close to ideal (maybe some minor lowering adjustments). I had a few laps in a parking lot on one. While the power delivery is smooth and managable, it is still a 300 2T, and if you give it a fist full of throttle, you're getting what you asked for. So that worries me a bit for her, being a relative beginner.

Questions:

How much can you actually tame it down with the power valve? Any comps? (i.e. With the power valve all the way in, it feels like a 150cc 2T?). I imagine it to behave a bit like a 125 2T, quite tame until you get to a certain point and the power valve opens and lets fly. Just more low end power than a 125 2T.

How much does rain mode tame it down?

What about a throttle tamer? Seems sort of similar to power valve adjustment essentially. Sort of calms down the bottom end, but you can get there eventually.

Has anyone else put some pretty green beginners on a 300 Xtrainer?

I think its a bit much for her. But also selfishly, I sort of want to make it work for her because I think with some minor adjustments back towards stock, I can have a good time on it also. Appreciate any thoughts

My dashboard does not show my speed and does not show that I am in neutral and does not show that my are on blinkers. My other electronics work fine, like the Horn and blinkers itself.

The dashboard does flash every 3 seconds or so. Does any

I’m considering a 350 X-Pro, but the place I ride has very strict noise limitations. I know the bike is reasonably quiet in stock form, but has anyone successfully made one noticeably quieter than stock?

I’m not looking for more power — quite the opposite. Happy to sacrifice some performance if necessary. Interested in quieter inserts, alternative silencers, additional packing, or any other setup that genuinely reduces dB without causing problems for the bike.

Anyone done this with a 350 X-Pro (or similar 4-stroke Beta)?

Fuel pump gets 5v voltage seems to be on the lowside.

Injector voltage can't be measured (i don't have a osilliscope).

Injector opens with a 9v battery.

I get a strong spark on the spark plug and it has enough compression.

I have tried to test all wires between ecu and the injector but they seem ok.

When starting and using a different battery to power the fuel pump i get around 3 bars of pressure on the main fuel line. But still the injector does not open.

A new harness costs around 300€ in Finland and a new ecu costs around 500€ + programming.

What could the problem be?