50cc

engine size	model	year	best	better	good	standard
50	CHF50 Metropolitan, II, SP	'02-'11	YTZ7S	-	-	-
	NB50 Aero	'85-'87	-	YTX4L	-	-
	NB50M Aero	'83-'84	-	-	YB4L-B	-
	NN50MD Gyro	'84	-	-	YB4L-B	-
	NPS50, S Ruckus	'03-'11	YTZ7S	-	-	-
	NQ50 Spree, 50D SS	'86-'87	-	YTX4L	-	-
	NQ50 Spree	'84-'85	-	-	YB4L-B	-
	P50 Little Honda	'67-'68	-	-	-	6N4-2A-4
	PA50I Moped, PA50II	'78-'83	-	-	-	6N4B-2A-5
	SA50 Elite LX, S, SR	'88-'01	-	YTX4L	-	-
	SB50 (All)	'88-'90	-	YTX4L	-	-
	SE50 Elite (All)	'87	-	YTX4L	-	-
	TG50 Gyro S (All)	'85-'86	-	YTX4L	-	-