I think i have photos of this swingarm somewhere but they are really easy to ID
optional B alloy arm has a cable guide tag welded on top of the RH side of the swingarm for the cable guide. Also has a torque arm bracket welded to the bottom side of the RH side of the arm.
the 78 C alloy arms have a threaded hole in the RH side of the arm for a wire cable guide loop to screw to. They also have no brake torque arm tag apart form the early C's that still had them fitted but not used.
This is the late C arm for floating brake (to tag) This is what most of the C model arms out there are like
This is the late C on the left and early C (with the brake lug still) on the right. I assume suzuki could not be stuffed cutting it off and just used up what was left of the optional 77 alloy arms first. The tag was never used as all the C's had floating rear brake. I guess they also may have just left it in case someone wanted to revert back to the 77 wheel and use the non floating set up.
You can also contact Graeme Boyd at Suzuki Newcastle His name on here is SON so you can also PM him. He has all the different types of swingarms above and the photos above are from him so thanks goes to him.
Another thing, if you are looking at aftermarket swingarms (DG/Profab/Lop) the banana ones are not pre 78 legal as they only came out during the 78 yr.
The PDI banana arms (they called them a Z arm) are pre 78 legal however. They were availeble very late 1977. I have got proof if anyone needs it to prove eligibility at the races.
