This is a White Brothers P/N 05-335 MX-4 Exhaust for RMZ450 (05-06). The text below is from the WB web site.

Our MX4 was developed for those looking to get more performance and personalize their bike at an economical price with out sacrificing quality. This slip-on muffler shares many of the same components as our complete line of full size exhausts (Carbon Pro, Aluminum Pro & E2).

As with all White Brothers exhaust it puts out the power that would only be expected by the most winning 4-stroke exhaust in AMA National history. This is an exhaust that will give you the confidence to go out and tackle any thing put in front of you. It has performance, durability and quality not met by the competition. Using our exclusive “square ellipse” impact extruded one piece aluminum canister/end cap plus stainless steel exhaust tubing, the MX4 is more bang for your buck.

Technical Specs:
• Revolutionary impact extruded one piece aluminum muffler canister and end cap with no welds, rivets or bolts holding them together.
• Stainless steel mid pipe that is tig welded for quality.
• Aircraft grade angled aluminum inlet, providing the capability for the exhaust to be positioned further down the subframe, lowering the center of gravity and also to allow for a longer muffler canister while not making it stick further out the back of the bike.
• Innovative 2 piece tongue and groove modular billet aluminum mounting bracket.
• High temperature cartridge muffler packing for maximum performance and longevity.
• Hand made in Yorba Linda, California.

Retail Price $319

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We will ship your item(s) the same or next week day following receipt of payment, using either UPS Ground or USPS Priority Mail. A tracking # will be emailed to you once available. It is the buyers responsibility to specify insurance if desired, and for the additional cost. We are not responsible for items once turned over to a carrier for shipping.

International sales are made only by USPS Priority Mail International.

We are happy to combine your purchases and ship them together to save you on shipping costs.

All sales are final unless we have made an error or grossly misrepresented an item. No refunds or exchanges can be made due to the low selling price we have on our ebay items. Please ask any questions well in advance of auction end to allow us time to respond. No week-end replies as we are not in. Application details are provided in the description, so please verify the item will fit your model. We make every effort to insure there are no surprises when you receive your package, as we hope you will return Corona Motor Sports for all your motor sports requirements.