Yosh Duplex on Ebay

[Guest]

Here's one for an old GSXR which should be able to be used on the liter class GS modles.

http://cgi.ebay.com/ebaymotors/1990-GSXR-1100-NICE-BOLT-ON-YOSHIMURA-EXHAUST_W0QQcmdZViewItemQQcategoryZ34284QQitemZ4567972961QQrdZ1

[Anonymous]

If I may, what is the "duplex cans"? what do they do? Basically a crossover pipe?? thx-darren

[Billy Ricks]

They store pressure when you're off the throttle which is supposed to help mid-range when you get back on the throttle. Basically it is supposed to widen the powerband since it's tuned for topend.

[mark m]

If I may, what is the "duplex cans"? what do they do? Basically a crossover pipe??

Essentially, yes. Technically, it is a side branch resonator, which changes the resonance properties of the pipe. As Billy said, the goal is to improve midrange power while preserving the top end gains.


Mark