2Bros Parts

Factory 4.1 RCT Exhaust Silencer 18-26 Yamaha 450 YZ WR F FX - FMF 044488

$881.80

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Delivery to United States 5–8 business days

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The FMF Factory 4.1 RCT Titanium Anodized SL Slip-On Exhaust System with Carbon Cap for Yamaha 450 YZ WR F FX delivers substantial power gains and improves handling with its integrated Resonance Chamber Technology. This exhaust is constructed from aerospace-grade titanium and carbon fiber for high performance and durability, featuring a blue anodized finish and carbon endcap for reduced weight and a distinctive look. It includes internal and external Resonance Chamber Technology, a compact and crash-resistant profile, a screen-type spark arrestor, a 94dB quiet insert, and a Rapid Tuning System for quick adjustments. Designed exclusively for closed-course use, this single-configuration slip-on exhaust is made in California. Specifications include titanium construction, a blue anodized finish, titanium midpipe, carbon endcap, and a weight of 8.3 lbs (3.77 kg).

Specifications
SKU
06-1784.SIL.FTC
Brand
FMF Exhausts
Availability
In Stock (10)

Fitments (28)

MakeModelYear
YAMAHAWR 450F2019
YAMAHAWR 450F2020
YAMAHAWR 450F2021
YAMAHAWR 450F2022
YAMAHAWR 450F2023
YAMAHAWR 450F2024
YAMAHAWRF 4502019
YAMAHAYZ 450F2018
YAMAHAYZ 450F2019
YAMAHAYZ 450F2020
YAMAHAYZ 450F2021
YAMAHAYZ 450F2022
YAMAHAYZ 450F2023
YAMAHAYZ 450F2024
YAMAHAYZ 450F2025
YAMAHAYZ 450F2026
YAMAHAYZ 450FX2019
YAMAHAYZ 450FX2020
YAMAHAYZ 450FX2021
YAMAHAYZ 450FX2022
YAMAHAYZ 450FX2023
YAMAHAYZ 450FX2024
YAMAHAYZ 450FX2025
YAMAHAYZF 4502018
YAMAHAYZF 4502019
YAMAHAYZF 4502020
YAMAHAYZF X 4502019
YAMAHAYZF X 4502020
General Product Group
Exhaust Systems & Parts
General Product Type
Silencer
Variant Id
209410
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

FMF Factory 4.1 RCT Titanium Anodized SL Slip-On Exhaust System with Carbon Cap

Experience enhanced performance and handling with the FMF Factory 4.1 RCT SL Slip-On Exhaust System. This innovative exhaust system integrates FMF Resonance Chamber Technology™ and Factory Forward Engineering to deliver significant power gains while centralizing mass for improved rider control. Crafted entirely from aerospace-grade titanium and a carbon fiber endcap, it offers an exceptional balance of high performance, superior durability, and reduced weight. Precision manufactured in California, this slip-on exhaust features a striking blue anodized finish and a carbon endcap, contributing to its lightweight design and distinctive appearance.

Key Features:

  • Resonance Chamber Technology: Incorporates FMF Resonance Chamber Technology™ both internally and externally for optimized exhaust flow and sound.
  • Compact Design: Features a compact and crash-resistant profile with a reduced overall length for better maneuverability.
  • Premium Construction: Built from aerospace-grade titanium with a blue anodized finish and a durable carbon fiber endcap, ensuring maximum strength and minimal weight.
  • Included Accessories: Comes complete with a screen-type spark arrestor and a 94dB quiet insert for compliance and sound management.
  • Rapid Tuning System: Equipped with the Rapid Tuning System (RTS) for quick and easy tuning adjustments.
  • Closed-Course Use: Exclusively designed and intended for closed-course competition use.

Specifications:

  • Type: Slip-On
  • Configuration: Single exhaust
  • Construction Material: Titanium
  • Finish: Blue Anodised
  • Midpipe Material: Titanium
  • Endcap Material: Carbon Fiber
  • Spark Arrestor Type: Screen Insert (Included)
  • Quiet Insert: 94dB Insert (Included)
  • Weight: Approximately 3.77 kg (8.3 lbs)
Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).

Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.

Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details

Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy

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Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.

More answers in our FAQ.

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