"Dyno tests have shown these four-into-one collector pipes to be superior to just about anything else currently available. These superbly hand-crafted pieces bring the primary tubes together to terminate in a central point, rather than just chopping the tubes off inside. This helps to minimize turbulence caused by the exhaust gases trying to fill the void between the tubes.
Sports 2000 / FF2000:
expertly constructed from 16 gauge (0.065" wall) mild steel tubing"
Catalog price is $269.99
Free shipping within the continental United States