Montesa

Can I fit a counter balance weight from a 349 onto a 248 Crankshaft. The 248 has a part no 5160 171 02, whilst the 349 part no is 5160 171 03 Failing the conversion can anybody suggest where I can obtain a new or second hand 248 counter balance weight. Thank you.

Anyone know where i can get a set, they appear to be uncommon sizes, although i have put new sealed bearings in so could refit the old ones.

hello, ive been away from trials for a number of years now, but am looking to make a return. My brother has just bought a 300rr, and it seems a bit more sharp off the bottom than I remember my old 4rt was, but it was while ago.. The suspension was excellent tho, I have to say, front and back. I had a couple of 4rt's before , a 2005 and a 2008 model. my 2005 was a better bike, because it was newer to me and had seen less abuse than the 08. I was looking at the 4rts and noticed things havnt changed much outwardly. Ive also done a bit of reading up and most opinions are to go with a repsol as it has better suspension and rims. however, I am on a budget, i.e i…

Not been riding my 4RT for 3-4 months and went out to re-try a few sections that I did, at a recent Trial, that I cleaned on my other 2T bike Tried on the 4RT and would it grip, no it bloody wouldn't - even with a brand new tyre............. on muddy hillsides and woodland type sections Grr, I find the front end has a mind of its own sometimes too Rocks, fine Streams fine Mud/Banks..........nope

S3 manufacture a replacement high level enduro mudguard for the 4 Ride, but at £100 plus it's seriously more costly than buying standard bodywork from the likes of UFO, Polisport, etc. Has anyone had experience of making the change using a generic motocross type mudguard? I'm happy to pay the price for their gear selector kit, considering the engineering involved, but 100 quid for a plastic fender just doesn't seem right.

Hi thinking of buying a new montesa 4RT but carnt decide which model, is it worth paying the extra £££ for a RR and what’s the main difference between the 2 bikes apart from the 301 having the bigger motor, how do they both ride and would the RR be too much for a clubman rider? thanks

Who would people regard as good 4RT problem solvers and repair ? I've tried all the usual bits (good spark) but I suspect fuel supply related problems. Based in Northallerton North Yorks.

Well evryone new to all this have a montesa cota 123 project looking to see has anyone got a workshop manual pdf or know where thers an online one bought the bike as a non runner needs parts was told engine has transmission problem wont select gear anyone able to shed some light cheers jordan

Tweaked my exhaust in a loop out. Have been trying to locate an OEM one but seems that the US has been/is on an extended backorder. Anyone happen to know where I might find one? Thanks in advance. Mark

Hi all, As the title, i have a 315 but was thinking of modernising it and freshening it up with a 4rt rear mudguard. I have seen pics of bikes with them on so i know its do-able, but how?? Obviously it will need to be cut down at the front, and a hole drilled for the top bolt to go through but does the rear subframe need modifying to accept the rear fastening points? Thanks for any advice!

What is the best fuel tank sealer to use on a leaking fiberglass fuel tank? Does anyone make an aluminium fuel tank that fits under the fuel tank of a Montesa Cota? Thanks

Hello everyone, I recently added a cota 49 to my stash of Montesa’s. Does anyone on here have one and could send me some photos of their bike so I can figure out where some of the frame brackets go and other parts. The bike came in a box and I am trying to repiece it together. Thanks!

Hi, has anybody used an inline fuel tap to bypass the problem of turning the fuel on with gloved sausage fingers ?

Hi, I'm trying to get hold of an exhaust silencer for my Cota 247. In the attached picture it can be seen top right. I've tried most of the usual sources but have had no luck so far. Thanks in advance, Phil

Hello All - My AMAL carb body is beyond repair. I’m looking for alternative new low cost carb options please.

Right guys next question, what's the thing with the kickstart punching a hole in the side case , what position does the kickstart need to be , at the same angle as the down tube?

Right fellas quick question, what's on , off , res on the fuel tap thanks

Hi Folks, Relatively new to the trials scene, bought a 1 year old Montesa 4RT 260 Cota 2018. Intrested to know people's service intervals. I know the manual recommends oil change every 15 hours but the guy in the shop recommended every 4/5 hours?? How often would you change the oil/filter and transmission oil? Any other important maintenance tips? any gaskets or 'O' rings? Kind regards,

More monty questions, what pre mix are you using ,have done a search but throws loads of different answers

Hi , just got myself a 348 , what oil should I be using in the gearbox, clutch etc thanks