Will this work?

[Cpd419]

JT Sprockets Counter Shaft Sprocket - 13-Tooth | JTF259.13 | eBay

MPN JTF259.13. JT Sprockets Counter Shaft Sprocket - 13-Tooth. JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value. We are an authorized JT Sprockets dealer.

www.ebay.com

Was wondering if anyone knows if this is the right sprocket? eBay says it fits the 125 trail but it’s a different year ct. thanks

 

[Cpd419]

Found it on Amazon after searching the forum. Thanks again

 

[SneakyDingo]

JT Sprockets: Catalogue

This is the spec sheet that states the compatibility, etc. - if you do a search for 273.13 teeth, you'll find people mentioning that - either myself or @dmonkey has mentioned it before.

JT Sprockets: Catalogue

www.jtsprockets.com

This is the one you linked to. It has a spec sheet at the top, but you can see that while the tooth splines are the right dimension, the overall shaft width is too wide. These have 2mm engagement on a 20mm OD shaft, while ours have a 3mm engagement on a 17mm OD shaft; if you tried to put the 259 sprocket on a CT125, to me it would spin freely because the drive shaft is too narrow.

https://www.amazon.com/JT-Sprockets-JTF273-13-Steel-Sprocket/dp/B0022ZLB90

This is what you need, although IIRC the product image used doesn't match.

EDIT: Also don't just go off the CT125 designation. There is more than one CT125.

 

[Cpd419]

I bought the 273.13. Thanks for the info bud