Brand New Mikuni Velocity Stacks - Set of 4 - 70mm - KRS-004
Velocity stacks improve the air flow into the carburetors to increase induction efficiency and increase horsepower on racing engines where are filters are not required. Set of 4 Velocity Stacks fits Mikuni RS Series Carburetors and other carburetors with 55mm O.D. intake bells. Choose length depending on chassis clearance and desired tuning characteristics.
Overall Dimensions: 55mm ID x 80mm Long
Mikuni measures these as 70mm as they don't count the mounting flange