Triumph BSA No-Drag Complete Clutch Plate Kit

Yes, this kit will fit your bike. This kit provides six steel an six bonded plates as pictured in the listing. There are many more components to the clutch, but these are typically the parts that wear the most. It could be the other components of your clutch are in good shape and don't need replacing.

If its an A65, yes this will fit.

You don't have to soak the plates in oil before installing, that would create a messy situation for you. But, it's probably not a bad idea to put a light film of oil on the plates to avoid any initial sticking. My experience is, as soon the bike is started (with primary oil level correct) and clutch exercised (lever pulled in and out with engine running), you'll have plenty of oil on the plates.
Since you have a 1978 Bonneville, your clutch shares oil with the engine (earlier models do not). So you will have to drain and refill your engine oil prior to installing the plates. Be sure you use a "MOTORCYCLE APPROVED" engine oil. Modern automotive engine oils are so slick, they do not allow for good clutch plate stiction on "wet plate" clutches like these. Most auto part stores carry good "motorcycle" oils for various temperature applications.

You never want to use 90 weight oil in the gearbox. That mixture is too viscous. That is to be used only in the primary (clutch) side. You might want to re-check your manual. The manual calls for 20 weight oil in the primary, however, Type F automatic oil can safely be used and is sometimes called for if you are experiencing clutch slipping issues.

By now many of these old bikes have been modified (upgraded) to a later specifications. The later replacement parts are now less expensive and more readily available.
If your existing shock housing is original it would have a raised flange on the back by the chainwheel (stock for pre-1966 models) preventing a friction plate from touching the chainwheel, so a steel plate would have to go in first.

This clutch kit will fit your T100.
For best performance, be sure to check the clutch basket and outer shock absorber clutch plate tang slots for notching as this will effect clutch performance. If notched, either replace with new parts or at the least, file the notches flat.

The 13-plate (7-steel and 6-bonded) clutch plate kit (MAP2151) is for electric start only. This will not work on your 67 model. For that you need the MAP2150, 12-plate kit (6-steel and 6-bonded). This is the best clutch plate on the market for vintage Triumphs and when properly installed, you should have no problems with creep.
http://www.mapcycle.com/categories/transmission-primary/clutch/map2150-clt-pac-tri-bsa-ii-s-spec-no-drag-12pcs.html
If you'd like to lighten up the pull on the clutch lever, take a look at our billet clutch plate kit. This kit is designed to reduce friction on the clutch operating rod, thus reducing the amount of pull it takes to retract the clutch lever:
http://www.mapcycle.com/categories/transmission-primary/pressure-plate/map2100-triumph-bsa-billet-pressure-plate-alloy-construction.htm

Yes, this will work on your '83. No extra parts required unless you other clutch parts are worn, for example, your clutch springs.

If you have the original '64/65 plain plate (part number 68-3221) then it is not available at this time. This plate is slightly different from the newer plates (part number 57-1363) and these are the plates we manufacture and sell with our kit.

I am not sure how you determined your BSA has our clutch in it, but this clutch set is designed to fit 1958 or later 500cc and 1963 and later 650/750cc BSA unit twins with a 3-spring this clutch.
If your clutch sits in an oil bath, then it is not a dry clutch. Dry clutches do not come into contact with oil. That is whey they are called "dry." If you happen to have an aftermarket belt drive system you may have a dry clutch. There are not many BSAs with belt drives though. If you do, then you may have a dry clutch and it is being ruined by the oil coming into contact with it. And in that case, this clutch will not work. But if you do not have an aftermarket belt drive in your BSA twin, and it is newer than 1958, then you do not have a dry clutch. And this clutch kit will work.

If your clutch plates are damaged or beginning to come apart, that may be part of the issue of the sticking. You will certainly want to change out your old plates. Our MAP2150 kit offers the best clutch plates available for vintage Triumph twins. This kit offers the best no drag clutch plates you can buy. If your clutch is properly adjusted with fluid levels correct, it will not drag - period.
Because you have had problems with your clutch sticking over a short period of time, it kind of makes me think someone probably put some kind of oil additive into your engine oil - something like STP or a additive designed to stop leaking seals. These additives are not designed to work on clutches, so it is possible it might make the clutch become more unusually sticky.
Keeping that in mind, I would also highly suggest you change your engine and primary oil - and clean out your oil tank and tank screen filter. On 1970 and later Triumphs, the primary and engine oils are the same. On previous years, these oils were different. While you have your primary cover off, use a non-chlorinated brake cleaner to remove all of the old oil residue from your clutch parts. Clean everything thoroughly before installing the new clutch plates.
When you replace the engine oil, I would strongly suggest you use a good MOTORCYCLE engine oil. You can buy this a any good auto parts cycle or cycle shop.
As oils evolved for automobiles, friction additives became necessary for oils used in motorcycles with "wet plate" clutches. A wet plate clutch has the plates submersed in oil. Almost all manual transmission automobiles (except some used in racing) use a diaphragm-style dry clutch. However, most modern motorcycles use wet plate clutches - including your Triumph. Those that don't (like vintage BMW, Ducati and Harley) have a dry clutch like a car and can use any automotive oil of the correct weight.
Here's the bottom line:
1. Drain the old oil in the engine, oil tank and primary
2. Clean out the old oil residue in the primary using "non-chlorinated" brake cleaner
3. Install MAP high quality clutch plates
4. Refill the oil using a good quality MOTORCYCLE engine oil

Yes, these great clutch plates fit any 1963 and later 650/750cc twin including the 1977 T140V Bonneville. It also fits 1958 and later unit twins 500cc models.