There is a rubber snorkel that goes into the opening, lengthening the air track further. Critical, I doubt it. I've run mine with and without, seems to make the bike just a slight bit leaner, but thats a guess as no Air Fuel Ratio was measured.
1982 KZ1000LTD K2 Vance & Hines 4-1 ACCEL COILS Added Vetter fairing & Bags. FOX Racing rear Shocks, Braced Swing-arm, Fork Brace, Progressive Fork Springs RT Gold Emulators, APE Valve Springs, 1166 Big Bore kit, RS34's, GPZ cams.
1980 KZ550LTD C1 Stock SOLD Miss it
1979 MAZDA RX7 in the works, 13B...
