fmf exhaust fitting

[pitpro140bf]

hey guys would this exhaust system fit my 08 pitster pro x4r it has a gpx 155z engine,
FMF POWERCORE 4 FULL EXHAUST XR50 XR 50 CRF50 BIG BORE - eBay (item 290463574190 end time Jan-09-11 16:41:26 PST)

 

[pbk]

no it will not

you need a klx FMF and make sure you get the 4.1

 

[wogtaz ryder]

yer powercore 4 is for a 50cc engine ............ dont get it.

 

[pitpro140bf]

okay thanks mate, are they worth getting one, or there isnt alot of power gain?

 

[pbk]

okay thanks mate, are they worth getting one, or there isnt alot of power gain?

buy a v2 head if your after a good power gain

 

[The_GDFP]

Stock 32mm pipe is fine. Pro Circuit might gain a HP, but the same money would buy a V2 (get the "small" cam) or a 177 TB 64mm kit. THOSE, you'd feel