Wobbly is right about 4.00 x18 being the oem size. I like to go slightly smaller at 110/90 to make it easier to squeeze the wheel between the FD and t...

The original handle bar risers (clamps) on a /5 are polished billet aluminum.

..."You know eventually these will dry up and not be available"... This is speculation, at best. Like anything in a market economy, if there is a d...

This why everyone hates oil threads. Now, were are discussing motor oil for diesels? Please forget about using "C" rated oil in an airhead. You can n...

And now, the rest of the story. Wobbly writes: " b) All of your higher rated oils are "high detergent". That detergent is needed to carry all th...

Your 3 quarts should be enough for an oil change. The weather is turning favorable in North America and should still be favorable in the southern hemi...

Keys for the seat lock and steering lock would have been the same when delivered by the dealer. For the bags and seat-belt latches, it seems likely th...

Mobil1 is synthetic oil, but Mobil1 V-Twin 20W50 carried the API SG rating the last time I checked. The Harley-Davidson Spectro 20W50 might be the Sp...

You could call Capitol Cycle and ask 'em. My local independent shop will order a box of Spectro H/D for me when I need some. Here's another tip, Mobi...

You are looking for motor oil with an API service rating of SG. Lately, I have been using Spectro Heavy Duty 20W50 non-synthetic.

I have been given to understand that the bars from a K75S will improve the riding position if you knock a 1/2 inch off the end of each side. I am also...

O.K., in my 1980 parts manual, on the piston pages for R90/6 and R90S, the rings, wrist pin, and circlip have the same numbers. The piston numbers ARE...

Well then, there are 4 things to consider. 1) contour of the domes of the pistons. 2) diameter of the valves at the seat end. 3) cam lift. 4) cam ...