Arrow 71878AKN Race-Tech Dark Aluminum Approved Slip-On Exhaust – Benelli TRK 502 (2017-2020)
¥78,300
¥98,600
-20%
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Arrow 71878AKN Race-Tech Dark Aluminum Approved Slip-On Exhaust – Benelli TRK 502 (2017-2020)
¥78,300
¥98,600
-20%
Taxes included.
Shipping calculated at checkout.
Code: 71878AKN
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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
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- Non-EU countries (customs) shipments temporarily suspended: they will leave as soon as Poste Italiane resumes collections
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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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The Arrow 71878AKN exhaust is a Race-Tech line slip-on with a "Dark" aluminum body, carbon fiber end cap, and stainless steel silencer internals, designed for the 2017-2020 Benelli TRK 502 Euro 4. It is ECE approved, making it road legal, weighs 2.1 kg, and comes with a dB-killer. Product code 71878AKN.
✓ Strengths
- ECE Approved – the official Arrow diagram marks it as ECE HOMOL.: it can be used on the road and passes inspections.
- “Dark” Finish – black painted aluminum with carbon fiber end cap and steel clamps: this is the dark version of the Race-Tech.
- dB-killer Included – the noise reducer is provided with the exhaust.
- Welded Mount – the attachment to the frame is integrated into the silencer body, without additional clamps.
- Manufacturer Declared Measurements – 300 mm body, ø 54 mm inlet, ø 50 mm outlet, 2.1 kg.
Technical specifications
| Part Number (MPN) | 71878AKN |
| Official Name | Race-Tech "Dark" aluminum muffler with carbon end cap |
| Line | Race-Tech |
| Type of Spare Part | Slip-on exhaust |
| Body Material | "Dark" Aluminum |
| Rear End Cap Material | Carbon fiber |
| Silencer Internal Material | Stainless steel |
| Body Length | 300 mm |
| Inlet Diameter | ø 54 mm |
| Outlet Diameter | ø 50 mm |
| Weight | 2.1 kg |
| Frame Mounting Type | Welded mount |
| Db-killer | Present, included in the supply |
| Lambda Sensor Provision | No |
| CO Sensor Provision | No |
| Homologation | ECE – approved for road use |
| Mid-pipe | Required, not included: 71689KZ catalytic approved or 71689MI racing |
| Quantity per Vehicle | 1 |
| EAN Code | 8019799097919 |
| Manufacturer | Arrow Special Parts – Italy |
| Condition | New |
⚠️ Important notes:
• The Arrow mid-pipe is also required and is not included. The catalog offers two options: the 71689KZ, an approved catalytic mid-pipe — this keeps the system street legal — or the 71689MI, a racing mid-pipe.
• ECE approval applies to the muffler. If fitted with the racing mid-pipe, the system is no longer compliant for road use.
• The exhaust covers the TRK 502 Euro 4 from 2017-2020 (Arrow vehicle type P16). For the TRK 502 X and subsequent years, Arrow has different codes.
• Installation is recommended for qualified personnel.
• The Arrow mid-pipe is also required and is not included. The catalog offers two options: the 71689KZ, an approved catalytic mid-pipe — this keeps the system street legal — or the 71689MI, a racing mid-pipe.
• ECE approval applies to the muffler. If fitted with the racing mid-pipe, the system is no longer compliant for road use.
• The exhaust covers the TRK 502 Euro 4 from 2017-2020 (Arrow vehicle type P16). For the TRK 502 X and subsequent years, Arrow has different codes.
• Installation is recommended for qualified personnel.
Vehicle compatibility
| Brand | Model | Years | Arrow Vehicle Type |
|---|---|---|---|
| Benelli | TRK 502 – Euro 4 | 2017-2020 | P16 |
The list is taken from the official Arrow spare parts catalog. Always check your motorcycle's model and year before ordering.
Products listed in the catalog
- 71689KZ – approved catalytic mid-pipe, the choice to remain street legal
- 71689MI – racing mid-pipe
- 71878AK – the same muffler in natural aluminum finish, which Arrow has discontinued
Who it's perfect for
For those who own a 2017-2020 Benelli TRK 502 and want to lighten and darken the tail without losing homologation: the original TRK silencer is large and heavy, the Race-Tech Dark is more compact, weighs 2.1 kg, and with the 71689KZ catalytic mid-pipe, it remains a street-legal system, with a fuller but contained sound thanks to the dB-killer.
🛡️ Warranty and quality – Moon Bike S.r.l.
Original Arrow Special Parts product, new and packaged. Moon Bike S.r.l. is based in Cercola (NA): official manufacturer's 2-year warranty, direct support in Italian, invoice, and shipping throughout Italy with professional packaging.
Original Arrow Special Parts product, new and packaged. Moon Bike S.r.l. is based in Cercola (NA): official manufacturer's 2-year warranty, direct support in Italian, invoice, and shipping throughout Italy with professional packaging.
Frequently asked questions
Is the Arrow 71878AKN approved?
Yes. The official Arrow diagram for the Benelli TRK 502 marks it as ECE HOMOL.: the muffler is approved for road use and does not compromise inspections, provided it is fitted with the approved catalytic mid-pipe 71689KZ and the dB-killer is in place.
Is just the muffler enough, or is the mid-pipe also needed?
The mid-pipe is also needed, which is not included. The Arrow catalog provides for the 71689KZ approved catalytic mid-pipe, or the 71689MI racing mid-pipe. The former keeps the system street legal, the latter is intended for track use.
What material is it made of?
The body is made of aluminum with a "Dark" finish, meaning it's painted black; the rear end cap is made of carbon fiber, and the internal parts of the silencer are made of stainless steel. The clamps and welded mount complete the piece.
How much does it weigh and how long is it?
The manufacturer states 2.1 kg and a body length of 300 mm, with an inlet diameter of 54 mm and an outlet diameter of 50 mm. It attaches to the frame via a welded mount on the silencer body.
Is the dB-killer included?
Yes. The official Arrow technical sheet for the 71878AKN states the presence of the dB-killer: the noise reducer comes with the muffler and is the element that keeps noise within homologation limits.
Will it fit my TRK 502 X?
No. This code is dedicated to the TRK 502 Euro 4 from 2017-2020, Arrow vehicle type P16. For the TRK 502 X and subsequent years, the Arrow catalog provides different codes: check your model and year before ordering.
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.