i don't see how to vote but here goes, first of all i changed all of my screws on my engine over to allen head screws to cut down on tools i need to carry. a full set of allens take less space and are easy to carry. i also carry 10mm, 13mm, and 15mm open box end wrenches for other adjustments like brakes, one phillips and one straight blade screwdriver. now for parts, one spare inner tube, one cdi and one magneto. a small medicine bottle with at least one of each of the original screws i took off the engine as i changed them out because they vibrate out on other peoples bikes. not mine though i put locktite on my screws. and then i also carry a motor mount clamp because i have seen at least two bikes now that the thing fell off someones bike and then the motor tilted and chain got loose causing a complete breakdown.
3/8 to 9/16 wrench set, 1/4 drive metric and sae socket set, 6 and10 inch cresent, #'s1 and 2 Phillips, small flat blade screwdrivers. Tire, tube, changer tools, pump, spokes, spoke wrench, rim and duct tape, baling wire and duck tape. Gotta build a trailer just to carry what THINK I need, but this is pretty much what I run with.