Set of 4 silver 39mm velocity stacks for Honda CB500, CB550 & CB750. Check the fitment list below for details. Lightweight aluminum construction just like the original velocity stacks on vintage race bikes from the 60's. Has a concealed micro mesh screen filter backed with a larger mesh to keep it in place at the base of the velocity stack. Will not hit the frame on CB500, CB550 & CB750. All other models check dimensions before purchase.
Includes 4 velocity stacks with mounting clamps.
NOTE: Velocity stacks let more air into the carburetors. You will need to install larger jets and or make other adjustments to the carburetors.
NOTE: Be sure to measure your carburetor prior to purchase. Also measure how much room you have between the carburetor and the frame or any side covers. Use the dimensions below to see if these will work on your bike. Just because the filters fit the carbs doesn't mean they'll fit in the bike without some obstruction.
NOTE: Velocity stacks are not CNC aluminum. They are stamped aluminum.
39mm ID where it mounts to the carburetors
63mm total length
60mm outer diameter
CB500K - 1971-1973
CB550F Super Sport - 1975-1977
CB550K - 1974-1978
CB750A Automatic - 1976
CB750F Super Sport - 1975-1976
CB750K - 1969-1976
KZ550A - 1980-1983
KZ550C LTD - 1980-1983
KZ550D/H GPZ - 1981-1983
KZ650B/F - 1977-1980
GS550 - 1977-1979
GS550E - 1977-1979
GS550L - 1979
NOTE: Fits other model bikes as well. Check your carburetor flange diameter before purchase.
Screens blow out
Posted by Mickey Davis on 2nd Jul 2017
I loved these when I first got them but pretty soon two of the micro mesh screens blew out never to be seen again. The difference in air intake affects the carbs and lack of filtration causes the carbs to need more frequent cleanings. I've looked exhaustively for replacement screens locally and on the web but can't find anything that matches.