Arrow 71806MI Non-Catalytic Titanium Mid-Pipe – Aprilia RSV 4 and Tuono V4 1100 (2025-2026)

The Arrow 71806MI non-catalytic central link pipe is the titanium connecting pipe that replaces the original catalytic link pipe on the 2025-2026 Aprilia RSV 4 and Tuono V4 1100 Euro 5+. It removes the catalytic converter, weighs 0.75 kg and is interchangeable with the stock component. Not street legal, intended for track use. Product code 71806MI.

✓ Strengths

• Removes the catalytic converter – it is a de-cat link pipe: a free pipe replaces the original catalytic converter.
• The lighter of the two – 0.75 kg in titanium versus 1.1 kg for its stainless steel twin 71805MI: 350 grams less.
• Interchangeable with the original – the Arrow diagram marks all components as interchangeable with the stock ones: it can also be mounted while keeping the original silencer.
• Lambda sensor provision – the connection for the lambda sensor is provided on the link pipe; there is no provision for the CO sensor.
• Complements the Pista silencers – this is the link pipe provided by Arrow along with the 71003PT, 71003PTN and 71004PT silencers for this motorcycle.

Technical specifications

Vehicle compatibility

The list is taken from the official Arrow spare parts catalog. Always check your motorcycle's model and year before ordering.

Products available in the catalog

• 71805MI – the same non-catalytic central link pipe, in stainless steel (1.1 kg)
• 71003PT · 71003PTN · 71004PT – the Pista titanium silencers provided for this motorcycle
• 11001EM – A.R.D. (Alert Remover Device), the Arrow electronic device provided for the Tuono V4 1100 2025-2026

Perfect for

For those who take a 2025-2026 RSV 4 or Tuono V4 1100 to the track and want to free up the exhaust from the catalytic converter without changing the entire system: the link pipe mounts in place of the original, can be combined with an Arrow Pista silencer or keep the standard silencer, and is the lighter of the two available versions.

Frequently asked questions

What exactly is the 71806MI link pipe?
It is the central pipe that connects the headers to the silencer. The 71806MI replaces the original one on the RSV 4 and Tuono V4 1100 2025-2026, eliminating the catalytic converter: the exhaust gas finds a free pipe instead of the converter. It is made entirely of titanium and weighs 0.75 kg.

Can I use it on the road?
No. The 71806MI is a non-homologated racing component: it eliminates the catalytic converter and therefore cannot circulate on public roads or pass inspection. It is intended exclusively for track or competition use, on motorcycles reserved for that purpose.

What is the difference with the 71805MI?
It is the same non-catalytic central link pipe, with the same shape and function, but the material changes: the 71805MI is made of stainless steel and weighs 1.1 kg, the 71806MI is made of titanium and weighs 0.75 kg. The difference is 350 grams in favor of titanium.

Do I also need to change the silencer?
No. On the Arrow mounting diagram, all components are marked as interchangeable with the original ones: the link pipe can be mounted while keeping the standard silencer. If you then want to complete the system, the Pista silencers provided for this motorcycle are 71003PT, 71003PTN, and 71004PT.

Will the "engine fault" message appear on the dashboard?
It may happen. These Aprilia models have a double lambda sensor, and Arrow warns that installing a central link pipe may trigger an error message on the dashboard. For the Tuono V4 1100 2025-2026, the Arrow catalog provides the electronic device A.R.D. 11001EM.

Do I need to intervene on the exhaust valve?
Yes. On the mounting diagram, Arrow states that when installing one of its link pipes, it is necessary to deactivate the exhaust valve control. This is a modification to the engine's electronic management: it must be performed by qualified personnel, along with the installation of the link pipe.