FMF MUFFLER HEX P-CORE 4 CRF

§ 01 / Part

18113799 MUFFLER HEX P-CORE 4 CRF

Fits Honda CRF 450 X
£462.50 Save 15%
£393.13

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 18113799

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FMF

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§ 02 / About this part

What it is

The FMF MUFFLER HEX P-CORE 4 CRF, slip-ons. Stocked by Iron Offroad, the UK MX hard parts specialist.

This slip-on silencer replaces the restrictive OEM unit on your CRF. It sits at the rear of the exhaust system and improves flow while managing decibel levels. The hex design increases internal volume for better throttle response across the rev range. It is a straight swap for the factory muffler. Service intervals depend on your riding style. Repack the internal core when the exhaust note becomes hollow or loud. This maintains back pressure and protects the outer sleeve from heat damage.

§ 03 / Specs

The numbers

Brand
FMF
Part number
18113799
Category
Slip-Ons
Weight
3.08 kg
VAT
20%

// Fitment

Will it fit your bike?

Fits 1 model · 1 year-band

* 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 — this is a UK shop for motocross, enduro, and trail-bike hard parts. All fitments live on the site, and listed against MX models KTM, Husqvarna, GasGas, Yamaha, Honda, Kawasaki, Suzuki, and Beta. Pick your bike on the timing-tower. Our USP is in the data, fully enriched to assist with accurate fitting and finding the right part for your bike quickly and easily. 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 & e-moto only. We operate from our huge storage facility in Leeds. Iron Offroad is a trading name of Iron Stable Ltd, registered in Mildenhall — Company No. 17061294. We have a RICH motorcycle history with multiple moto brands the images showing where we came from and our history, the business 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 Click & collect from Leeds
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 Click & collect from Leeds