roller rockers in standard head.

[habib]

Hi guys
Wondering if i could replace the gpx125 rockers with rollers? And if so where can i puchase them and where.
Thx h

 

[my67xr]

Yeah you can but they can be hard to find.
maybe email Ranuka at Akunar and ask him if he sells a bolt on kit to suit the GPX/Jialing 125's.

You will also need to replace your camshaft for a roller cam, and better valve springs if you want to use roller rockers.
The roller cams have a different rounded lobe profile, they also require stronger springs


Have you looked at your rocker's?
On the side of the longer section there will be a letter/number cast in it like J , or J2 etc?

 

[habib]

Thanks..! Will have a look tomorrow at the rocker

 

[my67xr]

From memory you will need to take the rocker out of the head to see the casting number

 

[habib]

Ok so it was a j type rocker so can i replace them with a j type roller rocker?