Arrow 52001PD Racing Header – Aprilia RX/SX 125 | Malaguti XTM/XSM 125 | UM DSR EX 125
Code: 52001PD
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The Arrow 52001PD racing header is a stainless steel aftermarket component designed to replace the stock header on Aprilia RX/SX 125, Malaguti XTM/XSM 125 4T, and UM DSR EX 125 (2018-2020) models. Made of stainless steel with a 32 mm outlet diameter and prepared for a lambda sensor, it optimizes exhaust gas flow to improve engine response and increase torque and power output.
✓ Key Features
- Stainless steel – corrosion and high-temperature resistant
- 32 mm outlet diameter – optimized flow for 125 4T Euro 4 engines
- Lambda sensor bung – maintains compatibility with the engine management system
- Direct fit – replaces OEM header without frame modifications
- Designed by Arrow (Italy) – leading brand in motorcycle exhaust aftermarket
- Compatible with all Arrow silencers in the range for RX/SX 125, XTM/XSM 125, and DSR EX 125
Technical Specifications
| Brand | Arrow |
| Code | 52001PD |
| Type | Racing Header (not street legal) |
| Material | Stainless Steel |
| Outlet Diameter | 32 mm |
| Lambda Sensor | Yes (bung present) |
| CO Sensor | No |
| DB Killer | No (not applicable to a header) |
| Homologation | NOT street legal – for racing/track use only |
| Made in | Italy |
• This header is classified as RACING and is NOT street legal for use on public roads.
• It eliminates the original catalytic converter: its use is permitted exclusively on circuits, closed tracks, or in competitions.
• Installation on vehicles used on public roads results in the loss of vehicle homologation and penalties as per road traffic regulations.
• If you require a street legal header with a catalytic converter, the corresponding Arrow code is 52001PZ.
Vehicle Compatibility
| Brand | Model | Years | Standard |
|---|---|---|---|
| Aprilia | RX 125 | 2018–2020 | Euro 4 |
| Aprilia | SX 125 | 2018–2020 | Euro 4 |
| Malaguti | XTM 125 4T | 2019–2020 | Euro 4 |
| Malaguti | XSM 125 4T | 2019–2020 | Euro 4 |
| UM Moto | DSR EX 125 | 2018–2020 | Euro 4 |
Related and Required Products
- Arrow 52001PZ – Homologated header with catalytic converter for the same vehicles (for legal road use)
- Arrow Silencer – necessary to complete the exhaust system (the header alone does not include the silencer)
Who It's Perfect For
The Arrow 52001PD racing header is designed for owners of Aprilia RX/SX 125, Malaguti XTM/XSM 125, and UM DSR EX 125 who want to optimize the performance of their 125 4T engine in racing and track environments. It is ideal for those who already have an Arrow silencer and wish to complete their exhaust system with a cat-delete header to maximize exhaust gas flow and get the most out of their bike in competition.
Original Arrow product, 100% Made in Italy. Moon Bike S.r.l. is an authorized Arrow dealer based in Cercola (NA). All products are covered by the manufacturer's warranty.
Compatible vehicles
- Aprilia RX 125 4T (2018-2020)
- Aprilia SX 125 (2018-2020)
Not sure it fits? Contact us
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.