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  • FMF 4.1 Exhaust System - Yamaha YZ450F 24 Anodized Factory RCT w/ Carbon Cap
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fmf 4.1 exhaust system​
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FMF 4.1 Exhaust System - Yamaha YZ450F 24 Anodized Factory RCT w/ Carbon Cap

2 sold in last 8 hours
FMF044478
Out of stock
Muffler
$1,374.99 $1,102.50
The FMF 4.1 Exhaust System - Yamaha YZ450F 24 Anodized Factory RCT w/ Carbon Cap isn’t...
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FMF Racing Yamaha YZ450F 24-24 AL Factory 4.1 RCT w/ R.Carbon Cap Comp Sys w/SS MB Header/ Mid Pipe
FMF Racing Yamaha YZ450F 24-24 AL Factory 4.1 RCT w/ R.Carbon Cap Comp Sys w/SS MB Header/ Mid Pipe
$1,074.99 $865.50
FMF 4.1 Exhaust System - Yamaha YZ450F 24 Anodized Factory RCT w/ Carbon Cap
Description

The FMF 4.1 Exhaust System - Yamaha YZ450F 24 Anodized Factory RCT w/ Carbon Cap isn’t just an upgrade, it’s an investment in elite-level performance. As riders push for lighter, faster, and more durable components, this system sets the standard for future motocross innovations.

Featuring FMF 4.1 Exhaust System, this high-performance system enhances throttle response, optimizes mass centralization, and reduces overall weight for superior handling. Made from aerospace-grade titanium and aluminum, it’s built for durability, crash resilience, and peak efficiency on any track or trail.

Take your Yamaha YZ450F to the next level with the FMF 4.1 Exhaust System. Experience explosive acceleration, improved handling, and a factory-tuned race sound. Don’t settle for stock, order now and dominate the track with every twist of the throttle!




Features:

  • Resonance Chamber Technology™ – Boosts power and refines exhaust flow for peak performance.
  • Ultra-Lightweight Build – Aerospace-grade titanium and aluminum reduce weight for improved agility.
  • Factory Forward Engineering – Positions the muffler closer to the engine for better mass centralization.
  • Race-Optimized Sound – Aggressive exhaust note while staying within competition noise limits.
  • Durability & Crash Resistance – Shortened design minimizes damage risk in falls.
  • Bolt-On Installation – No need for modifications—fits Yamaha YZ450F perfectly.

Specifications:

Product Name FMF 4.1 Exhaust System
Compatibility Yamaha YZ450F
Material Aerospace-grade Titanium & Aluminum
Technology FMF Resonance Chamber Technology™
Weight Reduction Significantly lighter than stock
Muffler Design Factory Forward Engineering for mass centralization
Sound Output Aggressive yet competition-legal
Durability Crash-resistant, high-strength build
Installation Bolt-on, no modifications required
Performance Gains Increased horsepower & torque

 

REVIEWS

T.J.

Unreal power boost! Installed this on my 2024 YZ450F, and the difference is night and day. The throttle response is sharper, and the titanium Megabomb header gives it a deep, aggressive sound. Lightweight, durable, and looks amazing, FMF knocked it out of the park!

⭐⭐⭐⭐⭐

Tyler J.

Phoenix, AZ

K.L.

Best exhaust upgrade for the YZ450F! The build quality is top-tier, and the performance gains are noticeable right away. The carbon cap adds a sleek look, and the sound is pure race bike perfection. If you want max performance, this is the system to get!

⭐⭐⭐⭐⭐

Kevin L.

Dallas, TX

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