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Exhaust› Mufflers and Resonators

FMF Racing

Muffler

Name: Muffler
Brand: FMF Racing
SKU: A44005907000

$399.99 $290.99 Save $109.00

SKU: A44005907000

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Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

Constructed from extra-strong sheet steel with a nickel-plated surface, it aims to provide better power delivery.

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Crafted from extra-strong sheet steel with a nickel-plated surface, this expansion chamber is built for durability and aesthetics. This expansion chamber is recommended for use in combination with an FMF silencer to achieve optimal performance. It is specifically designed for various 2023-2027 model year KTM and GASGAS motorcycles, including models like the KTM 250/300 SX/EXC and GASGAS EC/EX/MC 250/300. Key fitment includes GASGAS EC 250/300 (2024-2026), GASGAS EX 250/300 (2024), GASGAS MC 250/300 (2024-2026), and KTM 250/300 EXC/SX (2023-2027), along with specific variant editions such as Six Days and Champion Editions.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	FMF Racing
Part Number	A44005907000
Category	Exhaust

Videos

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250 SX FMF Gnarly pipe sound test

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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