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Classic Fmf Racing - 2009-2022 Yamaha 450 4.1 Complete System W/carbon Cap Megabomb Header - Us Warehouse [r6mV2d1c]

$41.99 $134.99 -69%

FMF Racing 4.1 Complete System w/Carbon Cap Megabomb HeaderUnlock your bike’s full potential with the FMF Racing 4.1 Complete System w/ Carbon Cap and Megabomb Header. Designed for riders who demand the ultimate in performance, this complete exhaust

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Classic Fmf Racing - 2009-2022 Yamaha 450 4.1 Complete System W/carbon Cap Megabomb Header - Us Warehouse [r6mV2d1c]

FMF Racing 4.1 Complete System w/Carbon Cap Megabomb Header


Unlock your bike’s full potential with the FMF Racing 4.1 Complete System w/ Carbon Cap and Megabomb Header. Designed for riders who demand the ultimate in performance, this complete exhaust system combines FMF's legendary Factory 4.1 muffler with the advanced Megabomb Header to deliver massive power gains, reduced weight, and unmatched durability. Whether you're racing on the track or hitting the toughest trails, this system offers top-tier performance and precision engineering.

Key Features:

  • Factory 4.1 Muffler with Carbon Cap: The Factory 4.1 muffler features FMF's Resonance Chamber Technology™ (RCT), providing massive power gains across the RPM range. The sleek carbon cap adds durability and a lightweight touch, making your ride both faster and more agile.
  • Megabomb Header: The Megabomb header improves exhaust flow with its unique resonance chamber design, boosting power and torque across the entire RPM range. It enhances low-end power, making it perfect for off-road riders and motocross enthusiasts.
  • Massive Power Gains: The combination of the 4.1 muffler and Megabomb header delivers significant increases in horsepower, torque, and throttle response for improved acceleration, faster lap times, and a more responsive ride.
  • Lightweight Construction: Made with high-quality aerospace-grade titanium, this system is designed to reduce weight without sacrificing strength, enhancing your bike's overall handling and performance.
  • Durable and Crash-Resistant: The Megabomb header is engineered to withstand the harshest conditions, while the carbon end cap on the muffler provides extra protection against crash damage.
  • Customizable Performance: The FMF Rapid Tuning System (RTS) allows you to fine-tune the exhaust for your specific riding style and terrain, maximizing performance for every ride.

Why Choose the FMF 4.1 Complete System w/ Carbon Cap & Megabomb Header?

  • Maximum Power Boost: Expect massive gains in horsepower and torque throughout the entire RPM range for a faster, more powerful ride.
  • Lightweight and Durable: Constructed from aerospace-grade titanium, this system is built to perform while reducing weight for better handling.
  • Perfect for Off-Road & Racing: Whether you’re tackling tough trails or racing, the Megabomb header and 4.1 exhaust system offer exceptional power, responsiveness, and durability.
Year Make Model
2009-2022 YAMAHA YFZ450R
2010-2011 YAMAHA YFZ450X


What Our Customers Say

January 27, 2026

Absolutely no complaints!

A purchase that has left me very, very happy.

- Ffion K..

January 27, 2026

Absolutely no complaints!

A very smart and an extremely so very high-quality gadget.

- Culhwch M..

January 27, 2026

Absolutely no complaints!

A great product. And I'm very, very, very, very happy with it.

- Dyfed I..

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