We will soon offer backplates for 1275 A-series engines in cnc-machined 6061 alloy.
We will also have cut-down HS4 manifolds back in stock soon, email for details if you need one quickly.
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.
