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Beta 4t


griggy35
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Don`t say where you are, but in our club the Beta runs better than the Montesa. There is a rev limiter on the bike. So if you are reving a new bike to the moon in neutral then it is you. They do come lean. Must be jetted and fitted with Jitsie thumb screw. My boys bike runs way better than the new Monts. By the way  my employer has 11 4rt`s, all years and it drives him nuts we ride Beta`s. And yes, we ride new Cota`s every week. 

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I found the stock main jet size was way too small (stock is a 120), ended up running a 130, also noticed that the clip on the needle makes a huge difference. Mine get's a lot more low end grunt running the clip on it's 2nd lowest position. It's a 2016 300 4T Factory edition with the ti pipe.

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  • 1 month later...
On 04/02/2018 at 7:46 PM, griggy35 said:

Hi there.couple of my pals just bought 2018 beta 300 4t and we are all having problems under load the bikes are misfiring can anyone help???as these are brand new bikes to.many thanks any help would be great

Did you get to the bottom of the problem?

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