Chain size question
 

I have a chain on a Manco kart that has no size markings on it. I have taken the measurements of the chain and referenced the chart on the BMI site.

This chart shows the chain is "420". When I look at sprockets etc. I never see parts indicating the are for 420. I see many for 40/41. 40 or 41 are very close to the same size as this 420 according to the chart.

Do I just order sprockets that say 40/41 ? Not a big deal ?

Thanks....

#420 chain is the larger/wider version of 40/410. Means it'll fit all 3 sizes of #40 sprockets. #40 sprocket is really thin/narrow, #410 is the next thicker size & #420 is the thickest. I owned a couple of Manco's and #420 is the chain you need.

Yes #420 it is. Others have told me the same thing. Thanks for helping.