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Updated: December 13, 2019
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OEM Aprilia 90mm Front Stacks for '11-'19 Tuono V4 (AF1-858879)

OEM Aprilia 90mm Front Stacks for '11-'19 Tuono V4

OEM Aprilia 90mm Front Stacks for '11-'19 Tuono V4 (all variants)

Starting with the '17 Model year, Aprilia's RSV4 began utilizing significantly asymmetric velocity stacks to improve mid and upper mid range power with no loss of low end grunt. That got us to thinking of what might happen if you ran a set of shorter stacks on the front cylinders on the Tuono V4 and Tuono V4 1100.  

Sourced from the '09-'15 RSV4-R spare parts catalog, these shorter front stacks typically give a Tuono V4 3-4 more mid and upper mid range horsepower with crisper throttle response and no power loss at low rpm. Peak power is unaffected. 

If you're already replacing the air filter or doing a valve adjustment, these stacks are a cheap and easy performance mod that requires no ecu changes

Stack placement in air box shown below:

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DNA High Performance Air Filter For V4
DNA High Performance Washable Air Filter for '09-'15 RSV4 (all variants) and '11-'19 Tuono V4 (all variants), Tuono V4 1100 (all variants)
90° Degree Aluminum Valve Stem SILVER -PAIR
90° Degree Aluminum Valve Stem SILVER -PAIR
External Hex Super-Magnet Drain Plug - V4 Engines
Hex Head Magnetic Oil Drain Plug, Pre-drilled for safety wire and includes safety clip. For '11-'19 Tuono V4 (all variants), '09-'19 RSV4 (all variants)
 

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