These velocity stacks for SU HS2 carbs boost intake air velocity and increase power (they are designed according to David Vizard’s flow bench findings in Tuning the A-series Engine). They also enable on to use modern K&N RU-4410 air filters (currently not included).
They are machined from billet 6061 aluminum and include socket head cap screws for mounting. Price is for 1 velocity stack, order 2 for twin carburetors.
These velocity stacks for SU HS2 carbs boost intake air velocity and increase power (they are designed according to David Vizard’s flow bench findings in Tuning the A-series Engine). They also enable on to use modern K&N RU-4410 air filters (currently not included).
They are machined from billet 6061 aluminum and include socket head cap screws for mounting. Price is for 1 velocity stack, order 2 for twin carburetors.
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