This product is vehicle specific. Click here to select your bike to ensure fitment.

Looking for something else?

FMF MegaBomb Header Honda CRF450R / CRF450RX 2017-2018 Stainless Steel / Dual Mufflers [Previously Installed]

Save $94.00 24%


This item is available as a Blem/Refurb. These are items that cannot be sold as "New" merchandise and are limited to stock on hand. See the product details for a description of the product's condition.

Ship to an Address: Please select a to view availability.

The Cycle Gear Difference
  • 30-Day Best Price Guaranteed
  • Free Shipping Over $49
  • No-Hassle Returns View Details
This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

Note: This item has been previously installed. Signs of installation may be present including opened packaging and minor scratches. The item may be missing tags, manuals or installation instructions, however it is fully functional.

FMF MegaBomb Header Honda CRF450R / CRF450RX

The science behind the FMF Megabomb header may be FMF's greatest engineering accomplishment to date. You can bolt on a Megabomb with an existing FMF Racing slip on for as much as a 3hp boost, plus the Megabomb actually reduces noises levels by as much as 1.5dB. The Megabomb technology is designed to produce more low end to mid range gains as well as broadening out the mid to top end power gains over stock. The FMF Megabomb is best used for Motocross/Supercross and GNCC style trails. Used by multiple Factory Teams, the Megabomb Header delivers next level technology you can have today.


  • Less susceptible to crash damage than longer headers
  • Produces long header torque and short header over-rev
  • Reduces sound output as much as 1.5 dB
  • Increases output from stock motor as much as 3 hp
  • Compatible with FMF muffler only
  • 100% made in the USA


  • Stainless Steel 2 lbs
  • Titanium 1.1 lbs
Read More

This product is vehicle specific. Click here to select your bike to ensure fitment.

This Product Fits:

CRF450R 2017, 2018
CRF450RX 2017, 2018
Product Style Item # Store SKU Manufacturer Product # Availability
Stainless Steel / Dual Mufflers 1651859 Only 1 Left: Ships within 24 hours