PRO CIRCUIT MUFFLER R304 KTM 125 SX

§ 01 / Part

18211899 MUFFLER R304 KTM 125 SX

Fits 5 bikes
RRP £204.42 Save 15%
£173.76

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 18211899

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PRO CIRCUIT

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§ 02 / About this part

What it is

The PRO CIRCUIT MUFFLER R304 KTM 125 SX, slip-ons. Stocked by Iron Offroad, the UK MX hard parts specialist.

This shorty silencer is designed to increase the bottom-to-mid range power of your 125 SX. The compact aluminium canister reduces weight and improves the bike's agility in tight corners. It features a stainless steel intake tube for durability against heat and vibration. This unit mounts directly to your expansion chamber. Because of the shorter design, the internal packing will need more frequent replacement than a standard silencer. Keep the packing fresh to maintain the sharp throttle response required for technical tracks. It is a focused upgrade for riders seeking more punch.

§ 03 / Specs

The numbers

Brand
PRO CIRCUIT
Part number
18211899
Category
Slip-Ons
Weight
0.96 kg
VAT
20%

// Fitment

Will it fit your bike?

Fits 5 models · 5 year-bands

* Fitment data is provided as a guide. Verify compatibility against the bike's owner's manual or service handbook before ordering. Iron Offroad accepts no liability for incorrect application. Full terms and conditions apply.

§ 05 / About Iron Offroad

Iron Offroad

Iron Offroad is the off-road sibling of Iron City and Iron Stable — a UK shop for motocross, enduro, and trail-bike hard parts. Every fitment lives on the site, listed against KTM, Husqvarna, GasGas, Yamaha, Honda, Kawasaki, Suzuki, and Beta. Pick your bike on the timing-tower. Our USP is the data: fully enriched fitment so you find the right part for your bike quickly and get it fitted accurately. Brands you'd find on a paddock workbench — pads, sprockets, plastics, fork seals, cables, gaskets, bars, the things that actually wear out. Road-bike kit, scooter parts, and quad gear sit elsewhere; dirt and e-moto only. We operate from our storage facility in Leeds. Iron Offroad is a trading name of Iron Stable Ltd, registered in Mildenhall — Company No. 17061294. The business has a rich motorcycle history across multiple moto brands — the photos show where we came from — and recently pivoted into hard parts and online retail.
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Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK support · Tue–Fri 9–5, Sat 9–4 Race-shop prices, paddock service Collection from Leeds by arrangement
Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK support · Tue–Fri 9–5, Sat 9–4 Race-shop prices, paddock service Collection from Leeds by arrangement