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  • Regular price £299.00

A velocity stack is a trumpet-shaped funnel fitted to the air entry of an engine's intake system, carburettor or fuel injection. It will aid smooth and even entry of air at high velocities into the intake tract. Often, added noise is sacrificed for gains of 2-4% when stack lengths are optimised for the engine. Modified engines often have the original air box and associated ducting removed and velocity stacks are installed as accessories.

In amateur and professional racing, check the rules on aftermarket velocity stacks.

This intake stack kit for the Aprilia Tuono 660 improves torque in the whole rpm range, included in the price is a matched ECU map to be flashed with the UpMap system.

Presently available maps:

  • Stock exhaust
  • Akrapovic Race exhaust (with or without dbkiller)
  • SC Project exhaust (with or without dbkiller)

You can buy the UpMap here:

ATTENTION: it’s a race product to be used in closed circuits, both stacks kit and UpMap mapping are not intended for street use.