FMF FACTORY 4.1 RCT SLIP-ON MUFFLER S/S ALUMINUM & CARBON NATURAL KTM

§ 01 / Part

18211719 FACTORY 4.1 RCT SLIP-ON MUFFLER S/S ALUMINUM & CARBON NATURAL KTM

Fits 20 bikes
RRP £625.24 Save 15%
£531.45

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 18211719

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§ 02 / About this part

What it is

The FMF FACTORY 4.1 RCT SLIP-ON MUFFLER S/S ALUMINUM & CARBON NATURAL KTM, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

This race-spec muffler uses Resonance Chamber Technology to lower sound levels while maintaining maximum flow. The stainless steel mid-pipe and aluminium canister provide a balance of durability and weight. A carbon fibre end cap finishes the unit. It sits at the end of the exhaust circuit and alters the power characteristics for better mid-to-top end pull. This slip-on is designed for competitive motocross. It fits your KTM using the stock mounting points. Regularly inspect the carbon cap rivets for tightness after heavy sessions. It is a high-performance upgrade that centralises mass for better bike handling.

§ 03 / Specs

The numbers

Brand
FMF
Part number
18211719
Weight
2.75 kg
VAT
20%

// Fitment

Will it fit your bike?

Fits 20 models · 20 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