ATC70 rear sprocket options

[theeechozen1]

I have a 85 125M motor in my 70.. i want to put a 428 sprocket on the back so everything matches up. What can I use?

Will an older CT sprocket bolt up?

It does work with the 420 rear but after some chain stretch i get some chain jumping.. since i need to swap them out now anyways I wanted to go 428 all around



thx!

[big specht]

I'm not sure if they make a 428 sprocket for a atc70. You might have to get one made or make one

[KASEY]

Honda used those sprockets on many small motorcycles too,,, maybe if you get a Honda parts guy to help you out ,, you can cross one over

[greenhuman]

I'm trying to remember. I think one of the Honda CT90 or 110 rear sprockets have the same setup as the 70. I think they have 42 teeth and are definitely 428.

[shortline10]

Take some measurements . here's a good link .
http://www.ebay.com/itm/REAR-sprocket-42-tooth-428-pitch-JTR999-42-steel-/271310603323?pt=Motorcycles_Parts_Accessories&fits=Model%3ACT110&hash=item3f2b5f443b&vxp=mtr