forza 125 head

[mikelx5]

Will it fit on pcx block 4v would be awesome and a bit more power that is just bolt on. im guessing it would with the 125 pcx head fitting on the 150 and vice versa.

[Pcxdemon]

Will it fit on pcx block 4v would be awesome and a bit more power that is just bolt on. im guessing it would with the 125 pcx head fitting on the 150 and vice versa.

Not sure, I know for sure that 125 head will go on the 150 and will make more power due bigger compression but exhaust manifold will have to be remade. Also 150 head can't go on the 125 as the valves would interfere with the top of the cylinder. The 150 squish bowel is considerably bigger than 125. If say the 4v head would be compatible, one thing for sure would be that exhaust manifold would be incompatible...

[mikelx5]

but then would you likely be running stock exhaust? would that fix the issue?

[Pcxdemon]

but then would you likely be running stock exhaust? would that fix the issue?

Stock exhaust for corresponding head, I'd say so but not sure with 4v head..