OSSA

Restoring 250 OSSA (believe it’s a TR77). Fork stanchions are pitted and could do with replacements. They look like Betor 35mm but the stanchions measure 610mm, replacements stanchions for TR77 are listed as 585mm. Anyone come across 610mm stanchions fitted to OSSA?

Hello everybody, Does anybody know where I can buy a Kickstarter for my 75 250 MAR in the UK? TIA Colin

Hi I have the rim and the hub and 36 x 90 degree spokes. I'm told they can't all be 90 degrees, half of them have to have a lesser angle. Anyone know what that angle is please? Its a front, 21 inch Akront from a 1974 MAR 250 Cheers Sid. Update.. The bike was a basket case and came with just the front hub and rim, no spokes. So.. In my ignorance I ordered 36 90 degree spokes from Poland because they were half the price of the Ossa kit. WRONG! I should have asked yous for advice first. There are two sets of eighteen, inner and outer with two different angles for each. I've just ordered the correct spokes from Trial World Thanks all fo…

Hi all. Has anyone got a picture or diagram of how the rear brake cable connects to the pedal bar and the rear wheel. Cheers Sid

I got a 2015 ossa explorer any idea where I could get a fuel injector? Any help is appreciated thanks in advance

does anybody know where i can buy a new fuel fitting that threads into my carburetor? This bike’s a bar find so some parts are missing off of it. My bike is a 72’ OSSA 250 Mar

Hey everybody, I've been searching for the right flywheel puller for a few days now. I need to pull the flywheel off of my 1972 Ossa 250 MAR. Im pretty sure that the thread is 26mm but i have no clue what the pitch is. Does anybody know where I can get a flywheel puller for this bike?

Hello I just bought my first bike at 52. Always wanted a trial bike as a kid and I thought I'd better get on with it. Anyway I got a 72 MAR recently. It's in bits and mostly complete. Of all the parts I can't seem to get hold of it's a kick-start lever. If the bike was built up it wouldn't be such a problem but obviously I need to turn the engine over to build it. Anyone know where I might get one? I'm guessing they're the same as other Ossa models.

Hi guys I am looking for information for my ossa 125 tr i 2014 Can you tell me if I can find sprockets to replace the broken one (visible in the photo). At first I thought the engine was broken and no it was a piece of the kickstarter broke inside the gearbox and this broke a tooth of the pinion I would be sad to have to throw the bike in the trash when everything else is working perfectly. Can we replace them with another brand? Gasgas Sherco.... THANKS

Hello all, Do I need a chain tensioner if I'm just green laning my 250MAR? TIA

Hello, New to trials, not new to bikes. I very recently bought a 2011 280i from a mate, he has not used the bike for some time and may even have lost interest in the bike given it was so much hard work to start. It had the 9volt battery mod but I found that the handlebar push button to engage the battery was not functioning. So the bike took a million kicks to start by which time you needed a lie down to recover..... I replaced the switch which improved things but around 10 kicks to light the fire was not uncommon. I checked spark and it was fat and healthy, I had drained and replaced the pre-mix and I had tidied up the horrendous job that had been done during t…

Where can I get replica/replacement ossa VIN stickers for my mar and tr77

Hi I need to replace the damaged VIN stickers on my ossa mar and tr77 so does any one who does them .cheers thackers.

Hey guys, this is my first time posting so bear with me. Here recently i got a 1972 OSSA mick andrews replica. i’m pretty new to fixing old bikes so i need some help with these wires on the bike. Does anybody know what their purpose is and where they plug into? Also where is a good place to find an replacement ignition coil. ignition coil for the bike? thanks.

Hi, should the rear axle have a sleeve/spacer inside the hub between the wheel bearings and if so are the available any where or does any on know the size?

I am in the process of rebuilding my TR77 and have come across a problem whilst trying to re-fit the front wheel. The hub/spindle assembly is too long to go between the fork legs, please see attached photos. The only thing I can think is that the spacer between the speedo drive and the ns bearing is too long? The spacer I have is 17.5mm long 20mm od and 12.5mm id, Ossa part no 106604 which I think is common to MAR versions as well. Has anybody got their front wheel out at the moment and if so can you please confirm the dimensions of the spacer on your bike. Thanks.

Hi can any one help I am looking for a good barrel and piston for my 250cc Ossa mar 1976 as the sleeve at the bottom of the barrel is damaged on mine, it runs ok but I would like to sort it before I sell the bike, thanks Brian.

Hi, could somebody please tell me the size and pitch of the rear spindle nut on a gripper.

Have been thinking about buying an Ossa around the 75/76 age to compete in the Pre 77/80 class in France and Spain. Could any of the officionardos of the Marque point me in the direction of what to look out for and any sensible things/mods needed to bring it more up to date. Not interested in making it something its not..... just want it to run and ride as well as it can. Thanks in advance.

Recently purchased a 73 MAR and a 72 Pioneer. Will need help refurbishing them. I'd say restoration but neither bike will be brought back to completely original. I'd appreciate contacts to used parts, any pics of authentic bikes, owners manuals and so on. Any and all help greatly appreciated. Tried attaching pics with no luck