FMF FACTORY 4.1 RCT EXHAUST SYSTEM

§ 01 / Part

18202003 FACTORY 4.1 RCT EXHAUST SYSTEM

Fits 2 bikes
RRP £1393.27 Save 15%
£1184.28

incl. VAT

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Usually dispatched within 3 working days.

Part #: 18202003

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FMF

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§ 02 / About this part

What it is

The FMF FACTORY 4.1 RCT EXHAUST SYSTEM, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

This full system updates the entire exhaust flow from the exhaust port to the tail. It features a resonance chamber designed to increase internal volume for better power gains while lowering the decibel output. The shorter canister length moves the weight closer to the centre of the bike for improved handling in corners. It bolts directly to the OEM mounting points on your frame. Ensure you use a fresh copper crush washer at the cylinder head to prevent air leaks. Periodic repacking is essential to keep the powerband consistent and the sound levels legal.

§ 03 / Specs

The numbers

Brand
FMF
Part number
18202003
Weight
5.72 kg
VAT
20%

// Fitment

Will it fit your bike?

Fits 2 models · 2 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