Many chains have the chain size stamped directly on the chain links.
Chain sizes #'s 35, 40, 41 & 420 are used in the Fun Kart and Mini Bike Industry.
An 11 or 12 tooth clutch sprocket usually indicates the use of # 35 chain.
A 10 tooth clutch sprockets usually indicates the use of #'s 40, 41 or 420 chain.
Make sure you order enough chain, any extra links can always be removed.

Code	Name	Image	Price
383	"CHAIN C-25 10' ROLL, OEM #: C-25"		$28.95
384	"CHAIN C-35 10' ROLL, OEM #: C-35"		$22.95
385	"CHAIN C-40 10' ROLL, OEM #: C-40"		$28.95
386	"CHAIN C-41 10' ROLL, OEM #: C-41"		$18.95
387	"CHAIN C-42-10' ROLL, OEM #: C-42"		$19.95
388	"CHAIN C-43 10' ROLL, OEM #: C-43"		$12.95
389	"CHAIN C-50 10' ROLL, OEM #: C-50"		$44.95
390	"CHAIN C-60 10' ROLL, OEM #: C-60"		$57.95
392	"CHAIN C-420 10' ROLL, OEM #: C-420"		$31.95
393	"CHAIN C-428 10' ROLL, OEM #: C-428"		$36.95
394	"CHAIN C-35 100' ROLL, OEM #: C-35"		$179.95
395	"CHAIN C-41 100' ROLL, OEM #: C-41"		$188.95
2905	"CHAIN C-41 X 40"" MURRAY W/CONNECTING LI, OEM #: 23468"		$8.95
2906	"CHAIN C-41 X 26-7/8"" MURRAY W/CONNECTING, OEM #: 401013"		$4.85
5811	"CHAIN C-40 100' ROLL, OEM #: COL-40"		$285.00
9317	"C-40 Chain, Size 1/2"" x 5/16"" Length 4 Ft., OEM #: C-40"		$8.95
9318	"C-40 Chain, Size 1/2"" x 5/16"" Length 3 Ft, OEM #: C-40"		$8.95
9319	Roller Chain # 41 For GoCart & Mini Bike		$9.95
9320	"C-41 Chain, Size 1/2"""" x 1/4"""" Length 3 Ft, OEM #: C-41"		$8.95
9321	Roller Chain # 35 For GoCart & Mini Bike		$9.95
9322	"C-35 Chain, Size 3/8"" x 3/16"" Length 3 Ft, OEM #: C-35"		$8.95
9867	CHAIN C-420 100' ROLL		$292.34
1733	Roller Chain Breaker Mower, Gocart & MiniBike		$14.95
10713	Heavy Duty Roller Chain Breaker, GoKart, Mower, Mini Bike		$22.95