The new Brown 90 parabolic pipe will be availible soon. It's a little larger in diameter and volume then the MACS 15 cc pipe. It also has more aggressive angles for more over all power.
About 3-4 weeks away.
Looks like Andy has found a good design there it will go well. The SPP pipes mentioned are the MP92 which is a perfect all round 90 pipe, finding the right pipe for your individual set up is a different matter and not everyone will like the AB or the SPP or even the MACS 15. They all will work. Good luck andySPP carbon. - awsome ( even on a stock motor )
"THE FLOATING PIPE"
Jason
Have run the Cooper15cc pipe on 91rs with good results, lots of torque, corner timesFrom what i have seen
The cmb pipe 67/80 big belly is to small for the 90 motors.
alot of people i have seen run the mac's 15cc quiet pipe with good results..
chris
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