FMF Stainless MegaBomb Header 044475 for Yamaha YZ450F/WR450F (2023–2026)

Boost performance where you ride most with the FMF Racing MegaBomb exhaust header, part number 044475, engineered for Yamaha YZ450F, FX, and WR450F models from 2023 to 2026. It delivers up to 3 hp more than stock and can reduce exhaust noise by as much as 1.5 dB, giving you a cleaner, crisper soundtrack and a stronger midrange pull.

The patented Megabomb design optimizes exhaust flow to improve throttle response and overall engine efficiency. Riders notice a broader power band, with long header torque and short header over-rev, which translates to easier holeshots and stronger top-end performance without sacrificing tractable low-end grunt.

Durable stainless steel construction stands up to heat and harsh riding conditions, maintaining durability and consistent gains across trails, tracks, and terrain. The header is a straightforward bolt-on upgrade that replaces the stock Yamaha header, enabling a seamless upgrade path for performance-focused riders.

Key benefits include enhanced horsepower and torque across the RPM range, improved exhaust flow for quicker throttle response, and a more linear power delivery that helps you maintain momentum on challenging sections. Installation is designed to be direct, so you can benefit from the Megabomb’s performance advantages with minimal downtime.

The science behind the Megabomb header may be our greatest engineering accomplishment to date. You can pay an engine builder thousands or bolt on a Megabomb for as much as a 3hp boost! Plus, the megabomb actually reduces noise levels by as much as 1.5dB. The megabomb header will have you pulling holeshots and dusting all the boys on the way up Competition Hill. Simply bolt it on and go faster.

• Increases output from stock motor as much as 3hp
• Produces long header torque and short header over-rev
• Made from Premium American Metal materials
• Patent pending design

The FMF Racing Megabomb exhaust for Yamaha motorcycles offers enhanced performance and durability designed to elevate your riding experience. Crafted with precision, this exhaust system is engineered to increase horsepower and torque, providing a noticeable boost in power across the RPM range. Its innovative Megabomb design optimizes exhaust flow, resulting in improved throttle response and overall engine efficiency. Constructed from high-quality materials, the FMF Megabomb ensures longevity and resistance to harsh riding conditions, making it a reliable upgrade for Yamaha enthusiasts. Installation is straightforward, allowing riders to quickly benefit from improved performance and sound. Whether for trail riding, motocross, or recreational use, this exhaust system is a valuable addition to your Yamaha motorcycle setup.

Features:

• Enhanced horsepower and torque for Yamaha motorcycles

• Innovative Megabomb design improves exhaust flow

• Constructed from durable, high-quality materials

• Optimizes throttle response and engine efficiency

• Easy installation for quick performance upgrade