The redesigned PowerBomb is a four-stroke header that incorporates FMF’s patented PowerBomb module at a precise location in the initial stage of the header. By positioning this “Bomb” at a key point in the system, increased performance and flow is achieved through the expansion and contraction of exhaust sonics through the system. Result is a flow increase of nearly 10%! The outer chamber in the Powerbomb allows the air to expand, cool and ramp back up at a higher velocity. Additionally, the PowerBomb is a “pre-muffler” of sorts which helps to lower the bikes sound output by providing more sound absorbing surface area for the sound medium (exhaust gases). On some models, you can choose between a moto or supercross version. The supercross version is designed for more low to mid-range power where the moto version is focused in the mid to upper RPM range.
Closed Course Only
Fitment
- HONDA CRF450R 04-08
- HONDA CRF450X 05-09,12-17
Shipping Information
Domestic Shipping:
Most free shipping options will apply to the lower 48 states only. Shipments to Alaska, Puerto Rico, Hawaii, and Guam will typically have additional costs. In some cases, this is shown on the listing when the correct zip code is entered. Please contact us prior to purchase if there are any questions. Most shipments come from our Oregon location, but some may be shipped from a different warehouse, depending on availability. Please contact us for more information.
International Shipping:
International shipping costs can vary. The ebay calculator is typically correct, but sometimes it can be wrong. If you would like a more accurate quote, contact us prior to purchase and we can get one for you. Refunds for overage shipping costs will not be given after a purchase is made. Import duties, taxes, or any other charges are not included. Those charges are the buyer's responsibility and will vary by country. We do not have a way of estimating these charges for you. We will not mark items as a gift, or provide lower value for customs.
Returns
Returns need to be unopened and in new condition. Return shipping costs are the buyer's responsibility unless ZMPerformance is at fault for the return. Any issues with shipments that are our fault, please contact us immediately and we will get you taken care of.
Disclaimer
On our ebay listings, we do our best to use the proper images for the items that are purchased. However, in some scenarios the manufacturer's image is not an exact representation of the actual product. The parts can vary slightly, so please make sure the part you are purchasing has the correct fitment for your application, and do not make purchases solely on the image on the listing. If you have any questions prior to purchase, contact us.