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Since Triumph bought Oset, they are not supporting older models. Even with current models parts are not available. I have been trying to buy a TXP 24 rear tire but they don't have any with no ETA. Triumph doesn't seem to care about trials.

My method of a window on both sides is easy to repack again by removing the rivets but this guy details his welding method.

On mine I cut a window, repacked and closed it back up with an aluminum sheet metal cover with a rubber gasket and rivets.

I had to replace my regulator/rectifier several times after the fan cut out, spark quit and both. I replaced the whole system with a used Kokusan but now you can buy a new replacement ignition and keep your stock flywheel and stator. https://www.thehellteam.com/cdi-regulator-rectifier-external-ignition-coil-gas~182025

You can fit huge 120/100 tires on a 4RT. MotoZ Arena Hybrid with Tubliss is a soft gummy tire with great traction in soft conditions at 4psi. The Mountain or Extreme Hybrid has a pattern similar to trials.

It seems they won't be having a team next year in trials or anything else. Vertigo is restructuring also. With less than 7000 bikes sold per year worldwide some brands will go away. Pre KTM Gas Gas sold more than twice as many enduro bikes as trials but KTM sold off the enduro tech to Rieju. Beta and Sherco are doing well in enduro. https://todotrial.com/rumores-de-fichajes-de-los-pilotos-del-mundial-de-trial-para-2025/

My 2007 Pro wouldn't shift from 3rd up and the shift shaft had a small crack where the arrow points to that caused the roller to not have enough pressure. I could have just welded it and saved some money since splitting the cases is not that hard.

The top hat has a cross bar that acts like a fuse and is supposed to break if the shifter hits a rock then it won't shift at all and you replace that part without splitting the cases. Most likely the shift shaft is damaged and you will have to split the cases. The part on the shaft that breaks is a bicycle chain link looking part that holds rollers onto the shifting drum and you have to buy a whole shift shaft.

Will Gas Gas be sold again? It definitely looks like they are ending the red KTM mx teams and bikes. https://dirtbikelover.com/ktm-in-crisis-brand-cuts-job-losses-and-production-reductions/

I would just send it to a replating company. It is done all the time in the MX and Enduro world. Just send the cylinder and a new piston to them and they will send it back like new. https://langcourt.com/

Many years ago when I had my 07 I was lucky and found a full Kokusan replacement ignition at Trials Breakers UK and it worked great and the price wasn't bad.

It could be the electric equivalent to Tenaci Wong. Are those still being sold? Budget trials bikes never seemed to sell well but at this low price it could. It has torque similar to EM. Arctic Leopard has an enduro model that looks good and lower spec to Stark Varg and should be a good seller to keep them in business.

There are 2024 bikes at half the price of EM EPure. No clutch but titanium frame option. Base model is only $100 more than the new Oset 24. https://arctic-leopard-usa.com/trial/

There are several electric dirt bike brands using a 4 speed pit bike gearbox and the general consensus is it doesn't need that many gears and the ideal would be 2 gears with the highest a road gear to save battery while going fast. Since you don't need to shift while in section, the low hanging shift lever should be moved up and away from rocks. No use for neutral but reverse would be nice by switching polarity with a handlebar switch. Mecatechno doesn't have a flywheel and some high level riding is done with it. I'd like to see an e-trials bike with a clutch and two gears at half the price of the current ones.

It's a good idea to replace the shaft also.

My 2007 Sherco 250 does the same thing when it has hasn't been ridden in days or weeks. Seems to be a European trials bike problem for bikes without diaphragm clutches. Japanese bikes with basket clutches don't have this problem. My old Fantics had sticky clutches.

Clutch control is one of the best things to use a trials bike to master. I have found the belleville spring gas gas clutch problematic to adjust. I like a grabby clutch to get rear wheel lift and the gas gas clutch gets softer over time even though plates are in spec. You have to adjust it with different thickness steel plates and/or the Xiu ring. https://www.xiu-rdi.eu/comprar/40/soporte-de-muelle-ajustable.html

Another thing to watch out for is where the airbox boot goes on the carb. Mine had an inner sleeve that can come off and suck in unfiltered air. Also crashing on the seat/airbox can pull the boot off. Here is the fix. https://www.vmar.com/carb.html If the skidplate is flattened and the rubber cushioning is deteriorated you can get metal to metal contact and crack your cases. The silencer rubbing the tire is common with no easy fix.

One thing about the gas gas pro engine is the main bearings are lubed by the transmission oil and if you hear any unusual noise, stop riding immediately. I sold my gas gas to a friend and a month later he kept riding it after a noise started and trashed the main bearing and other gears. The other oddity is getting six gears out of four. The patent has expired and no one else is using it for good reason.

I found the thread where a 250 2T enduro rider bought a 2007 Sherco 250 which is the same bike I ride. He ended up milling the head for more power while I find the power fine and about the same as the GG 250 I had. https://www.advrider.com/f/threads/2007-sherco-250-what-compression-ratio.1629759/page-2 The KTM 300 is popular for hard enduro because you can lug it and a 300 Trials bike can be lugged even more so it is a good cross training tool. A 125 2T won't lug much. For high level trials the 125 is considered a stepping stone to the big leagues where you rev to the moon and dump the clutch.

300 is by far the most popular size in the US with the best resale value. Riders below expert class will add a flywheel weight and low comp head. I think there is a thread on ADV rider where a KTM 300 enduro rider bought a 300 trials bike and was complaining it had no power and was doing crazy porting mods. All trials bikes don't have much high end power compared to enduro. If you are coming from a Japanese enduro bike, you can't start or shift an older gas gas pro engine the same way or else you will break it. Single deliberate kicks and gentle shifts are required.

Every hard enduro rider I know who rides SEER and TKO and owns a trials bike for cross training has a 300 and doesn't compete in trials. They might try STRA Intermediate class and find it boring and not interested in tight technical turning and more into Expert level steps, big climbs and not concerned about dabbing. Virtually all the STRA riders are not interested in hard enduro. Trials dealers are very honest and trustworthy so you could get one shipped to you without a problem. They would even take in a bike from a private seller, make sure it is mechanically sound, then ship it to you at a good price.

Early gasgas pro bikes are problematic and you will spend a lot of time an money keeping it running. I bought a low hour 2007 250 in 2007 and had to split the cases to replace shift shaft, replace the ignition and replace idler and kickstart gears. A friends 2013 gasgas had to have the cases split twice for gears and seals failing. I owned my gasgas for 12 years and was glad to get rid of it. Very unreliable gearbox and ignition. I spent a lot of money replacing Ducati parts and had to replace it with Kokusan. Don't buy a gasgas with a Ducati ignition, it will leave you stranded! My 2007 Sherco 250 has been very reliable with plenty of manageable power. I would get bored easily with a 125 trials bike. A 250 and up makes hillclimbs fun but if you don't have big hills a 125 would be fine. The most reliable are Montesa 2 or 4 stroke. My 2005 4RT has been flawless. A late model 300cc 4RT can be one of the loudest bikes when revved up. Mine is quiet at low rpms and not so bad at higher rpms.

I made my 4RT "street legal" with a bicycle battery powered headlight, Tusk dual sport kit, and plate from my XL250. I ride on the street for a few miles to my trials riding areas and pop the seat off.