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Well, this seems like a completely unobtanium part! I whipped one up using tinkercad, and printed it using TPU....... seems to work not badly! Uses the original aluminum portion of the buckle. You have to drill out the rivet, and either superglue it in place or use a 4mm bolt with a lock nut. Link to the file on thingiverse. https://www.thingiverse.com/thing:6776548/files

WR101QZ

The three controls basically limit the power. Can't remember the order, which was which but easy to figure out 1 limits top speed so you can set it 2 Throttle sensitivity, how quick throttle responds as turn it 3 power, so can you alter max available power to prolong battery life. Suspension adjustments are very limited, basically like cycle forks. Years since my lad had one but made suspension slightly softer/firmer

Then call it a rotor. We know it has one of those because yours has a crack in it and if you search for 'KTM 50SX rotor' you come up with something that looks very similar to your broken part.

Can anyone recommend a bearing puller with a link to buy. that will pull the lower triple clamp bearing off old txt triple clamps .iv looked at the sealy one and it's not a puller god knows what it's for lol..cheers.

Oh OK then , nevermind.

Without a picture of the center, it looks like an aluminum core with steel plate on front. Is so or even if not, you may be able to pry the magnets out, have the aluminium piece remade and epoxy the magnets back in place. You could take it to a shop that does machine work and ask. I found this also.

Where are you located at? Mike

Hi there's no flywheel on this model I've tryed the hell team also

Unlikely but to know for sure you would need another same model bike that is working.

FRANCO MORINI BASED MOTOR shown in the txt boy parts book available at www.thehellteam.com has a stator magneto flywheel that looks exactly the same as one out of a KTM SX50 that are easily available on Ebay for between £30 to £40 , I am not saying it will fit straight on your version you would have to ask a seller to give you all the relevant measurements to see if it would.

Took the bike out today and it overheated again. Fan running slowly. Cleaned connections again, no joy. By chance can across this thread - As suggested disconnected the fuel solenoid (which was not working anyway) and fan now back up to speed.

I was hoping someone was still active on this Site and had some advice to help get my Grandsons bikes ready. The Oset website has little info and seems to be not updated. Can someone help find a online manual or print version for a 16r and 20r.? Specifically I'm looking for info regarding the three adjustments (what they control) located on the backbone of the frame. I also would like to understand the suspension adjustments on the forks as well. If there is a active Oset online community that I'm missing please point me in the right direction. Regards, NJtrials

Cheers iĺl give that ago I've heard that the ktm 50 will fit but not sure which one any ideas .think I need a to replace the cdi too

I'd pull it off to determine exactly why it split, see if the crack can be reduced back to zero and hit all the cracks with superglue to reinstall and see if it splits open again.

I stand corrected. Should have kept out of it.

Owned 5 4RT models from 2005 to 2017, 250, 260 and 300RR, owned 3 at the same time and swapped parts between each to trouble-shoot. Model makes almost no difference because the 4RT didn't change much to the point where most parts from one will fit right onto the next and work just dandy. I have the header pipe with the Cat converter and the O2 sensor from my 2014 260 4RT sitting in my spare parts box. That was my only 4RT that came in the crate straight from Spain unopened.

You're right, sometimes it's better to direct the question to the source of an answer and let the reader figure it out from there 👍 https://www.nature.com/articles/s41598-023-43695-6

This one was directed at you, lemur. "montesa" translated to "mountain" in English. @IBA4rt. lemur had a 2014 260. It would not have had an oxygen sensor.

That fixed it. The woodruff key broke, I must not have tighten the flywheel bolt tight enough. Thanks again.

Hello all can someone tell me the head bolt torque settings for the Fantic 240?