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FMF

Factory 4.1 RCT Anodized Full System

Name: Factory 4.1 RCT Anodized Full System
Brand: FMF
SKU: 044438

$1,099.99 $916.64 Save $183.35

SKU: 044438

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Moderate — 2–4 hours

Overview

The FMF Factory 4.1 RCT Anodized Full System is a high-performance exhaust system designed for Yamaha YFZ450R and YFZ450X ATVs. This system features a titanium muffler with a blue anodized finish and a carbon fiber end cap. The midpipe is constructed from durable stainless steel, complemented by a stainless steel MegaBomb header. It includes a removable screen insert spark arrestor.

Engineered for significant power gains across the RPM range and substantial weight savings, this full system is a direct replacement for the stock exhaust. The FMF Factory 4.1 RCT system is intended for closed-course use only and is a qualified manufacturer-declared replacement part.

Show original supplier description

The FMF Factory 4.1 RCT Anodized Full System is a high-performance exhaust designed to deliver significant power gains across the entire RPM range for your ATV. This "System" type exhaust features a durable titanium construction for the main canister, complemented by a stainless steel midpipe and a MegaBomb header, ensuring both performance and longevity. The system boasts a striking blue anodized finish on the titanium muffler and a sleek carbon fiber end cap. It weighs in at a mere 6.8 lbs, contributing to overall weight savings for improved maneuverability. Included with the system are a screen insert spark arrestor and a quiet insert, allowing for customization based on riding conditions and regulations. It is engineered for direct fitment on select Yamaha models, including the YFZ450R from 2009-2026 and the YFZ450X from 2010-2011. Ensure compatibility with your specific vehicle year before purchase.

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
Part Number	044438
Category	Exhaust

Videos

FMF 4.1 RCT Full Exhaust - YFZ450r Sound Test

FMF Factory 4.1 Full Exhaust System Install | Motorcycle Superstore

2018 YZF 450r w/ FMF 4.1 Powercore Titanium Exhaust w/ Bomber

How To Install FMF Full Exhaust System On 2022 YFZ450R (Part 2 Of Power comander 5 install)

YFZ450r FMF Factory 4.1 slip-on

FMF 4-Stroke Spark Arrestor Insert Tech Tip

FMF Factory 4.1 Titanium Anodized Slip On Muffler With Carbon Cap | Review

How To: FMF Spark Arrestor Installation | MXstore.com.au

2014 YFZ450R FMF 4.1 Factory Exhaust Megabomb Titanium Header

FmF Factory 4.1 and Megabomb

FMF Factory 4.1 Exhaust Review - AMX Product Insights with Riana Crehan

FMF Power Core 4 vs Stock Exhaust Sound Yamaha YFZ 450R

Installing a FMF 4.1 Factory Slip-On | Dennis Kirk Tech Tip

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Returns & Fitment

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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