Beta

Hi please can any one tell me if it is normal to re'bore a 125 cylinder that's if it can be done, and where is the best place to buy a new piston and ring etc.

A friends son has a 06 125 rev 3 which has developed a whizzing sound which seems to coming from the cyclinder / flywheel area. initally the bike lost power. He was advised to clean out the exhaust and repack the can which he did to some success as the bike regained some power but did develop this whizzing sound. any ideas......thanks Leggins

hi all i have a beta rev 3 125 and when i start it from cold on the choke it revs up quite high with no throttle. is there something wrong or is all ok? thanks max

Can anybody help me !! i want to put the standred size sprockets on my 05 125 but i don`t have a clue what size thay should be.

During my clutch inspection I found two steels that had lips along the outer perimeter on one side that the adjacent friction fits nicely into. These aren’t mentioned anywhere in the manuals I found, do they go in a special location in the stack? The frictions were all within spec so I reassembled as it came apart and flipped the spring washers so the raised area was nestled inside the spring, lowering the effecting preload pressure on the springs. Clutch is a lightswitch, I’m hoping to get more progressiveness in its action…. Thoughts? Skiddy

Took muffler off during my inspection on the new to me bike and the o rings were hard broken junk. I’m trying to wrap my head around how the new ones will go on. Do they go on the Ti header first, then slide the muffler on, hoping they go into their prospective grooves? Seems optimistic at best…..

Hi How is the tank vent tube routed on your bikes? Ive always just tucked the little tube into the top of the tank cover but if I get a overflow, the fuel runs down the clutch hose and throttle cable causing dirt and dust to stick everywhere. What I did now was stick the tube into the carb overflow tube that is routed up under the tank cover. It should breath ok and if it overflows it will flow into carb and then flow out the bottom of the bike. Do you see any issues with this or how is your bike tube routed?

Will the 2014 mudguard fit on the 2011 frame? Talking rear fitment. Thanks in advance.

Having an issue with my 14 evo. Seems to run good if i rev it up a bunch and clean it out. But I’ll idle around and run it in the low rpm’s and it just runs extremely blubbery up top. Like when the bikes just been started and try to give it a bunch of throttle. I’ve gone one down on the main. I’m in the top clip. Air screw is out. Cleaned the air filter 2x I’ve sort of tried running it with the air filter out but I’ll have to test it better than just my parkade. Any other reason I could be having this issue or is this just normal?

Hi i got 17 evo 4T factory and every time my bike die on little hill it always spits fuel from carb on ground.Also it's very hard to start when hot afterwards. should I adjust the float bowl or do the billy mod? jetting is 130 main and 25 pilot fuel screw out 1.5 thanks

Hello all, My friend has a Beta tr34 1987 engine to rebuild and he is wondering if there are any well known classic beta parts dealers....... internal engine parts ie con rod kit, bearings and seals. thank you.

I have a Beta TR34 that has a sticky clutch on first use. After the bike has sat for a day, when I first start the bike, the clutch will not disengage. The bike will lurch forward when you first put it in gear with the clutch pulled in. After that first lurch, which almost always stalls the motor, I can start it again and all is well. The clutch acts fine other than that. Any ideas on what might cause this? When I physically inspected the clutch by pulling it apart, it looks ok.

Hi all just acquired a 1990 tr34/alp 260. are there an parts manuals or specs around. To start I need to know fork oil wt and amount? Front end is too soft with little or no damping. any help much appreciated bob

Does anyone have any idea on what gear oil I should use for a 1990 Beta? And how much oil? I'm dry right now. Thanks!

There's one on ebay. I have an 04 315r but the kid want's a bike to play with. I've never seen one. Are they any good? Are parts available? Thanks, Bill.

I ve recently purchased a zero 1990 bike and a box of spares .its been partly rebuilt and looking for any paperwork that would help me or diagrams..... thanks Brian

A 91 beta (Zero?) just came up locally for $1800. Price seems a little high but it looks pretty clean. He says it needs a new throttle tube,rear brake bleader and rear wheel bearings. Is there anything I should look for with these bikes. I know nothing about beta's.

I'm new to trials and am looking for a "starter" bike. A dealer who specializes in Trials bikes has a 1991 Beta Zero 260. Price is @ $1800US. He backs all his used bikes and rates this one as "8.5 Mechanical". I'm inclined to purchase from a dealer - especially a one specializing in trials bikes - rather than from an individual. How does this model stack up as a bike to start out on?

Hello, I have a 92 beta alp 260 air cooled. The carb is giving some grief. I heard rumors of some guys changing to a mikuni. Can anyone tell me what model mikuni and where to fine them? Thanks in advance.

got a problem.... bike starts and runs backwards.. told it's the magneto stators any advice on a fix or even better where i could find a replacement all help and advice would be greatly appreciated..cheers, STUMPED...........