Rk signature piping size?

[Evilpenguinking]

Besides the downpipe section, what is the piping size on rk signature exhaust for b58?

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[i3igpete]

stock 2x2.75
rk 3.5
sp1r 3.5
titan 3.5
tomei 3.5 single or 2x3.0
hks 2x2.75
dinan 3.25
made 3.15
akrapovic 2x2.75
injen 3.5 (both single and dual)
megan 3.0 single or 2x2.85

 

[Evilpenguinking]

stock 2x2.75
rk 3.5
sp1r 3.5
titan 3.5
tomei 3.5
hks 2x2.75
dinan 3.25
made 3.15

Good info! Thanks

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