R4 Headpipe?

[EXDUNER127]

What is the best head pipe for the R4 slip on that fits, is it only FMF that makes them, and has there been any problems with the powerbomb, (defects, cracking, etc.). Cuz my buddy neads a head pipe.

[EXDUNER127]

For a 400ex, sorry!

[DaveEX7]

Just get the WB header that originally goes with the R4 (Works header)........

If you dont want that, FMF is good....

[RideRed400StYlE]

I have heard nothing but good about the powerbomb header. I will be investing on one shortly

[DaveEX7]

If you get the FMF, make sure that it is long enough to reach the R-4

[Steve-o 400EX]

The powerbomb should be long enough because it comes out where the stock one does and if its a slip on they should fit perfect. I was thinking of doing this when I do my 416, right now I have an E-series.

[EXDUNER127]

What is the difference between the powerbomb and the hi-flo
header from FMF is there a diff besides looks and does the powerbomb ever crack, and with the powerbomb will it perform just as buying a full exhaust like the pro meg or big gun, or is it better to buy a full exaust?

[DaveEX7]

Originally posted by EXDUNER127
What is the difference between the powerbomb and the hi-flo
header from FMF is there a diff besides looks and does the powerbomb ever crack, and with the powerbomb will it perform just as buying a full exhaust like the pro meg or big gun, or is it better to buy a full exaust?


Well the hi-flo is more for a stock engine flow (maybe a lil more flow then stock).

And the Powerbomb lets alot of air flow, most people buy it for their aftermarket engines...

Naw they basically never crack, and ive never heard of one even rusting....

Well you would be happier by spendin the few extra $$ to get the powerbomb, cause you will notice bigger, better results.

Well if you have a FMF silencer, and add a Powerbomb header, its the same as a system.... but for other pipes its pretty close......