FMF FACTORY FATTY PIPE RAW STEEL YAMAHA

§ 01 / Part

FMF Factory Fatty Raw Steel Exhaust Pipe 18200135 for Yamaha YZ125 2005–2021 YZ125X 2020–2022

Fits 2 bikes
RRP £338.26 Save 15%
£287.52

incl. VAT

In stock — delivered in 6–10 working days

Dispatched in 2–3 working days · delivered in 6–10.

Part #: 18200135

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§ 02 / About this part

What it is

FMF Factory Fatty raw steel exhaust pipe to fit Yamaha YZ125 (2005–2021); Yamaha YZ125X (2020–2022).

This raw steel pipe is designed for maximum performance and throttle response. It uses a thinner gauge of steel than plated versions to improve resonance and weight. The hand-pounded seams provide a works look and feel. Because it lacks plating, you must apply a light coat of oil after washing to prevent oxidation. It is a direct replacement for the stock expansion chamber. Use new manifold O-rings to ensure a leak-free seal. This pipe is tuned for riders who want the most from their engine on the race track.

§ 03 / Specs

The numbers

Brand
FMF
Part number
18200135
Category
Full Systems
Weight
1.63 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 ✦