Protar made a number of big scale bike kits. I recently built the Italeri rebox of the Norton Commando in 1/9.
Revell of course had a bunch. The Triumph drag bike with the big fat slick was a good one.
I have a Tamiya RC 166 kit in 1/12. The 4 cam, 250 cc, 6 cylinder inline that Mike ran at 20K rpm all over the Isle of Wight.
damn the thing has pistons, rods, crankshaft and cams.
Scares the *** out of me.
Bill