[speedracer]

Will the TB head fit on a 85cc big bore kit

or does it have to be 88?

 

[Tomcat]

it says on there website it is for an 88cc big bore kit with a 52mm piston

 

[Guest]

It needs to be an 88 because it uses a high dome piston.

 

[MXcrazy5050]

what if the 85 BBK had a 52mm piston and u bought a domed one for it, wouldn;t it work then?

 

[Guest]

If the 85bbk had a 52mm piston then it would be an 88 unless stroke is changed. You can make anything work with enough money and effort. Sometimes it just isn't worth it.

 

[Tomcat]

cycleriders right, if your going to get a 52mm domed piston for it you might as well get an 88 kit 8O