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@Tr1AL Thanks again! That is super helpful the rear brakes need done (unfortunately I think the rear master need rebuilt/replaced too)

@excess You probably saw that your shock is not a OLLE but the SACHS ZF that is a standard on a TXT pro looks like they saved money with a cheaper finish on the body.

Lampkins (Beta UK) did have a complete spare parts order system on line for all years and models. The UK mail system must be very good because I could frequently get parts delivered to the US in one week which was faster than most US suppliers. In the past, shipping cost was comparable but a few years ago shipping went up 2x or more so I have not used their site lately.

Formula brakes /clutch master cylinders & slaves are no longer available mass production and parts are hard to find although there are some bits still around if you search hard enough I recently found a front calliper seal rebuild kit while searching for something else. Brake pads are easy to find GALFER or GOLDFREN make them to fit. Go to www.rideformula.com . Best wishes Alan. PS Formula make the TECH branded trials forks that are now used by a lot of Trials moto manufacturers.

Thank You! I've got it in my garage now so I'm able to dig a little deeper now. I really appreciate the help! Runs pretty well. Needs some maintenance

The Canada-France relationship is still intact, despite the attempts of the orange guy. Please hook me up as I regularly move things along this route. It may help Norm's economy a little... Thanks. Cheers... Paul

Fortunately I am Canadian 👍 which means shipping is expensive, taxes are high and my money has low value (at the moment). I'd hook you up with Norm the OSSA god if you lived closer, he only lives 2 or 300 kilometre away and you are correct I am lucky to have lots of good rider friends 😎 several are motorcycle dealers and that helps too.

You are lucky to have such a friend lemur, and although buying new parts is a potential solution, new OSSA specific parts simply cannot be found anywhere that I've searched to date. If you have a source, please share. On the flip-side, you live in the USA and your political leader has pretty much forced isolation upon you. Not my business of course, but that's obviously going to affect how you find your solutions. Fortunately, I don't have to deal with that, and the rest of the world is a big place... which has yet to provide what I need! Some patience and further enquiries needed, methinks. Thanks for your input. Cheers... Paul

You can buy brand new forks and a brand new shock that fits right onto your bike which is relatively fast easy and expensive, used suspension parts are not worth my time and money unless they are local sourced, I need parts now and 100% working, not more parts that need fixing. International purchase and shipping of parts might be easy where you live, not here in North America, If my Ossa rider friend that owns about five OSSA bikes doesn't have the parts, they likely don't exist in my country, ymmv.

Ah brilliant Chris I'll check that out. Thanks very much.

Beta have a main parts source in Ireland https://www.nmcbikes.com/beta-parts/ The Rev4 is not a current model but you should be able to get most parts you need. The suspension is obselete but can be repaired or rebuilt. You will need to pay VAT and import on anything shipped from UK.

If only such animals existed over in Europe. If they did, I'd probably have started with the TR and looked for an Explorer kit of parts. Not a bad suggestion, but sadly, very unlikely to happen. Cheers... Paul

Nope, sorry but you are incorrect. The Explorer has Marzocchi forks with steel stanchions, the TR aluminium; the rear shock of the Explorer is an Ollé and the TR has an Öhlins. Cheers... Paul

Great stuff and very interesting. Above my pay grade on the electronics. How I wish we lived near to oneanother. The regen on the throttle is very interesting - that would be a game changer for a lot of people that I can think of. I agree on your observation about the clutch as well - it is a weak point on the newer bikes I think - our Factor-e is not outstanding in the clutch operation. I would turn off the tickover for myself but the wife likes it. We had booked to ride with Gael who was one of the development riders but his recent injuries stopped him from being able to do the training. Hopefully that opportunity will come up again. I would love to go through some of this with him (it will help improve my French as well......)

Just purchase this trials bike this evening and trying to figure out model It did start on first kick but was unable to ride it. Would only continue to fire on 1 sec intervals at wide open throttle with heavy smoke. So just.. pop..pop..pop.

The write-ups are quite technical, but maybe some here will be interested. This link is the actual retrofit process: https://www.electricmotiontech.com/home/em-5-7/sx-controller-retrofit This link describes some preliminary work to familiarize myself with the SX controller: https://www.electricmotiontech.com/home/em-5-7/sx-controller-experiments

The trials model definitely had superior suspension to the Explorer. But I think going forward, the Explorer will be a very desirable bike. I expect some trials models will get sacrificed to keep Explorers running. I'd suggest buying a ratty trials model to use as a donor.

Thanks mate👍

Google BETA REV images then Google BETA EVO images and you will see the difference between the two types of frames the 4T has used. A 4RT is a HONDA montesa.

Hi everyone, I know this seems like a stupid question but I just bought a 2007 beta 250 4-stroke and I'm trying to find out what exact model it's is? VIN is ZD3T3020070000206 . From what i can find its a rev 4T, but then I'm seeing evo's and 4RT's and rev3 4T, etc etc it's a bit confusing 🤡🤯 thanks

From memory the suspension was the same between the trials and the explorer variant. Marzocchi forks and Ohlins rear shock.

Hi everyone. Totally new to trials and Totally new to beta. I just bought a cheap and cheerfull 2007 rev4t 250 4-stroke. The clutch is dragging and it seems to then when driving it has to be let out completely then it engages kinda sharply. Anyway I found a few hints where you file the glue off the friction plates and polish the little dogs on the plates so I'll try that. But the lever is a bit sloppy and the screw that pushes the piston in the master cylinder is pushing at an angle? There's a small leak there too. Having a little trouble finding a master cylinder rebuild kit for it, hard to identify my master cylinder? Any tips appreciated. I'll add photos of master and of the parts that don't seem to line up.

Thanks for your response lemur. I live in France, but I'm a Brit ex-pat. I'm not sure I understand your comments. Why wouldn't you shop for used parts internationally and why wouldn't you buy used suspension parts? I've a long history of buying new and used stuff from all over the world, so I don't have an issue there. Why do you? Having parts in hand, even if they are worn or damaged is better than not having anything. Worn can be rebuilt and broken can be repaired... Thanks anyway. Cheers... Paul

What country do you live in? Guessing UK only because you called it breakers but used parts are not something you shop for internationally. Shocks and forks are not something I would buy used anywhere and you can buy those items new without needing to be OEM branded.

Hello, I'm a noob to the forum, having just bought an Explorer. It needs some work, nothing dramatic, just fork seals and wheel bearings... oh, and a cylinder head to replace the cracked original... all which are in-hand. I've not ridden it much yet, but already it's a bit obvious the suspension lacks refinement. What I'd really like to do is replace everything with the TR280i kit, but parts seem almost as elusive as rocking-horse poop. Is anyone breaking a TR or have a shock and forks they're willing to part with? Thanks in advance. Cheers... Paul