Velocity stacks air funnel trumpets Triumph Street Triple 2008

  • 10 Units in Stock
  • Model: VS_23
260.00 €
Quantity :


Racing velocity stacks  developed on dynotune (Dynojet i250) and tracks,designed to use on circuits and driveways. Prohibited use on public roads

  • Increase power and torque at the mid and high rpm

  • The engine reaches its maximum speed in less time

  • Increased responsiveness of the engine during the reopening of thottle

  • Reduces the loss of engine power on approaching the rev limiter

  • Amazing intake sound

Dynamometers results:


AFR /Rpm

Hp / Time



Triumph Daytona 2008 with Leovince full exhaust

Linea blu = Stock velocity stacks   

Linea rossa = Venturisystem velocity stack without AFR tune

Tested by Phoenix Racing Lucca



Contents of a package:

  • 3 racing velocity stacks racing made by CNC machines
  • 1 support brackets made of stainless steel laser cutting machines
  • Screws
  • pack of medium strength Loctite
  • assembly instructions



The kit increases the air intake into the engine so may need to adjust the AFR (air-fuel ratio)

More Air =  AFR lean

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Technical Development

What does it mean AFR?