Arrow 71729MI Stainless Steel Racing Mid-Pipe – BMW F 900 R / XR (2020-2024)
CHF 198.00
CHF 245.00
-19%
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Arrow 71729MI Stainless Steel Racing Mid-Pipe – BMW F 900 R / XR (2020-2024)
CHF 198.00
CHF 245.00
-19%
Taxes included.
Shipping calculated at checkout.
Code: 71729MI
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Shipping notice: truck drivers' strike in Italy
Updated 19/10/2026
Since 16 October, truck drivers protesting against high diesel prices have been blocking roads and ports in Southern Italy (Campania, Calabria, Sicily, Puglia, Basilicata), and the protest could spread to the rest of the country. The strike affects all our shipments, in Italy and abroad: Poste Italiane is currently not collecting parcels, while BRT and DHL are collecting as usual but deliveries may be delayed in some areas.
- Italy we ship with BRT and DHL · possible delivery delays
- European Union for now we ship with DHL only · possible delays
- Non-EU countries (customs) shipments temporarily suspended: they will leave as soon as Poste Italiane resumes collections
We apologise for any inconvenience and thank you for your patience.
Shipping outside the European Union — duties payable by the recipient
This order ships outside the European Union and is subject to customs clearance in the destination country.
Export formalities and costs from Italy are on us and are already included in the price.
Import duties, taxes and clearance fees in the destination country are payable by the buyer. They are not included in the product price or the shipping cost, and we cannot calculate them: they are set by the customs authority of the destination country.
The carrier will not release the parcel until the recipient pays these charges. If the shipment is refused or the charges are left unpaid, the parcel is returned to us and shipping, return and any customs costs are deducted from the refund.
This order ships outside the European Union and is subject to customs clearance in the destination country.
Export formalities and costs from Italy are on us and are already included in the price.
Import duties, taxes and clearance fees in the destination country are payable by the buyer. They are not included in the product price or the shipping cost, and we cannot calculate them: they are set by the customs authority of the destination country.
The carrier will not release the parcel until the recipient pays these charges. If the shipment is refused or the charges are left unpaid, the parcel is returned to us and shipping, return and any customs costs are deducted from the refund.
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⚠️ RACING component – not street legal.
On the official Arrow website, the 71729MI bears the Racing badge, which, according to the manufacturer's legend, means: does not comply with any regulations, not approved for road use, only to be used on closed circuits. By installing it, the exhaust system can no longer be used on public roads, even if the paired Arrow silencer is ECE approved.
On the official Arrow website, the 71729MI bears the Racing badge, which, according to the manufacturer's legend, means: does not comply with any regulations, not approved for road use, only to be used on closed circuits. By installing it, the exhaust system can no longer be used on public roads, even if the paired Arrow silencer is ECE approved.
The Arrow 71729MI is the mid-pipe from the Arrow exhaust line for BMW F 900 R, F 900 R A2, F 900 XR and F 900 XR A2 from 2020 to 2024 (Euro 5, vehicle type 4R90 · 4R90R). It is the pipe that connects the headers to the silencer: it fits both the original BMW headers and the Arrow 71730MI racing headers. Part number 71729MI, EAN 8019799108615, weight 1.12 kg.
✓ Strengths
- Also fits original BMW headers – the Arrow mounting diagram explicitly states this: there's no need to change the headers as well.
- It is the mid-pipe designed for all six Arrow silencers for the F 900 R / XR 2020-2024, both Indy Race and Pro-Race.
- Stainless steel – corrosion and high-temperature resistance.
- No lambda sensor bung and no db-killer – it is a free-flowing mid-pipe, designed for racing configuration.
- 1.12 kg – weight declared by Arrow.
- Also covers A2 versions – F 900 R A2 and F 900 XR A2.
Technical features
| Brand | Arrow Special Parts |
| Code | 71729MI |
| Official name | Mid-pipe |
| Homologation | Racing – not street legal (closed circuit only) |
| Material | Stainless steel |
| Lambda sensor bung | No |
| CO sensor bung | No |
| db-killer | No |
| Weight | 1.12 kg |
| Vehicle type | 4R90 · 4R90R (Euro 5) |
| EAN code | 8019799108615 |
| Package contents | 1 mid-pipe |
Arrow does not publish body length, inlet diameter, and outlet diameter for this code: the three fields in the official data sheet are zero, so we do not report them.
⚠️ Important notes:
• The mid-pipe does not have a lambda sensor bung: the motorcycle's ECU may signal an anomaly. This is a normal consequence of the racing configuration.
• From 2025, the F 900 R and F 900 XR are a different application (vehicle type MR90 / MR90R) with different Arrow codes: this mid-pipe is not intended for those models.
• Installation by qualified personnel is recommended.
• The mid-pipe does not have a lambda sensor bung: the motorcycle's ECU may signal an anomaly. This is a normal consequence of the racing configuration.
• From 2025, the F 900 R and F 900 XR are a different application (vehicle type MR90 / MR90R) with different Arrow codes: this mid-pipe is not intended for those models.
• Installation by qualified personnel is recommended.
Vehicle compatibility
| Model | Years | Vehicle type |
|---|---|---|
| BMW F 900 R / F 900 R A2 | 2020-2024 | 4R90 · 4R90R |
| BMW F 900 XR / F 900 XR A2 | 2020-2024 | 4R90 · 4R90R |
The list is as declared by Arrow for code 71729MI. Always check your motorcycle's model and year before purchasing.
The Arrow system for this motorcycle
| Part | Codes | Homologation |
|---|---|---|
| Racing headers (optional) | 71730MI | ❌ Racing |
| Mid-pipe – this item | 71729MI | ❌ Racing |
| Indy-Race silencer | 71915PK · 71915AK · 71915AKN | ✅ ECE |
| Pro-Race silencer | 71915PR · 71915PRI · 71915PRN | ✅ ECE |
On the Arrow diagram, the 71730MI headers are connected to the mid-pipe by a dashed arrow: they are optional, the 71729MI also works with the original headers. The silencers, however, are connected by a solid arrow.
Who it's perfect for
This is the part for those who install an Arrow silencer on the F 900 R or F 900 XR and want to free up the exhaust system on the track: the mid-pipe eliminates the original section between headers and silencer and allows the engine to breathe. Those who need to remain road legal, on the other hand, install the Arrow ECE approved silencer only on the original mid-pipe: the bike remains compliant, and the 71729MI is kept for track days.
🛡️ Warranty and quality – Moon Bike S.r.l.
Original Arrow Special Parts product. Moon Bike S.r.l. is based in Cercola (NA), ships from Italy with invoice, manufacturer's warranty, and dedicated packaging.
Original Arrow Special Parts product. Moon Bike S.r.l. is based in Cercola (NA), ships from Italy with invoice, manufacturer's warranty, and dedicated packaging.
Frequently Asked Questions
Is the 71729MI mid-pipe street legal?
No. On the official Arrow website, it bears the Racing badge: it does not comply with any regulations, is not approved for road use, and can only be used on closed circuits. By installing it, the exhaust system is no longer street legal, even if the paired silencer is ECE approved.
Which BMW models does it fit?
BMW F 900 R, F 900 R A2, F 900 XR and F 900 XR A2 from 2020 to 2024, vehicle types 4R90 and 4R90R. These are the applications for which Arrow indicates this code.
Does it fit original headers?
Yes. The Arrow mounting diagram explicitly states this: the 71729MI mid-pipe fits both Arrow headers and original BMW headers. You are not obliged to buy racing headers as well.
Which Arrow silencers is it compatible with?
With all six intended for this motorcycle: Indy-Race 71915PK, 71915AK and 71915AKN, and Pro-Race 71915PR, 71915PRI and 71915PRN. They are all ECE approved, but when combined with this mid-pipe, the system remains for racing use.
Is it suitable for the F 900 R or F 900 XR from 2025?
No. From 2025, Arrow treats the F 900 R and F 900 XR as a different application, with vehicle types MR90 and MR90R and their own codes. This mid-pipe only covers the years 2020-2024.
What is the difference between the 71729MI mid-pipe and the 71730MI headers?
They are two different parts of the same system: the 71730MI headers replace the section attached to the engine head, while the 71729MI mid-pipe replaces the central pipe between the headers and the silencer. They can be installed together or separately – both are for racing.
Frequently asked questions
Shipping times +
Shipping within 24-48 working hours in Italy. Tracking via SMS/email. Free pickup at our store in Cercola (NA), ready within 1 hour.
Returns and refunds +
You have 14 days from delivery to return the item without giving a reason. Free returns for faulty items. Full details
Payment methods +
Credit cards (Visa, Mastercard, American Express), PayPal, Apple Pay, Google Pay, Shop Pay, Klarna (pay in 3) and cash on delivery.
Warranty and authenticity +
All products come with a 24-month legal warranty. We are an Official Piaggio Group Dealer: original spare parts are certified with a verifiable OEM code.
Technical support +
Our technical team is available on WhatsApp +39 392 456 1248 Mon-Fri 9:00–13:30 / 14:30–18:00 (Italian time), or by email.