• Matte Carbon Fiber end cap
• All-new faceted end cap
• Custom matte carbon fiber heal guard specific to each application
• Exclusive Yoshimura Works Finish
• Made in USA

• The new Kawasaki ZX-4RR sport bike is one special machine. Engineers at Kawasaki set out to develop a 400cc inline four cylinder engine built for high performance, and they delivered.

  For this special machine we used our AT2 muffler to develop a Street Series Works Finish slip-on giving power to the 16,000 + RPM's of the new Kawasaki powerplant. The AT2 came through in performance, sound, and weight savings. HP was bumped up by an increase of 3% and torque was bumped up as well, adding 4.3%. Our mission of adding power and torque throughout the entire spectrum was accomplished.

  The sound of this inline four at 16,000 rpms with our AT2 is simply something that must be experienced in real life. True music! Finally, the styling of the AT2 can't be beat. It's now iconic matte carbon fiber end cap and heat shield compliment the lines of the ZX-4RR to perfection.

  Our AT2 slip-on is proudly designed and manufactured in Chino, California.

Product Info: 

• Our stock photos shown are of the actual item.
• Brand new directly from YOSHIMURA in original packaging.
• IN STOCK AND READY TO SHIP
• SAME DAY SHIPPING MONDAY - FRIDAY IF ORDERED BEFORE 10AM!!!

Fits the following Vehicles:

Handling Time:

• Handling time on all items is 1 business day. Business days are Monday - Friday excluding holidays.
• Orders are processed daily at 10am EST Monday - Friday, this means if you place your order after 10am EST your order will not be processed until the following business day.

Domestic Shipping:

• Free shipping on most items unless otherwise stated to the lower 48 states. Additional charges for Alaska, Hawaii, Puerto Rico and Guam may apply. We reserve the right to change shipping carrier based on location or for combined orders. This is to ensure your package gets to you as quickly and as well packaged as possible. Our inventory is constantly updating and changing, we do our best to keep it as accurate as possible. However, in some instances seasonal items sell very fast and can be subject to temporary delays. In the case this happens, we place your parts on an emergency restocking order and the item will generally ship within 1 business day. In the event of a prolonged delay we will make our best effort to contact and notify you of such delays. ETA's provided by MX Locker are ESTIMATED TIMES, we aim to get you your order within these time frames however some unforeseen circumstances do arise. We will do our best to work with you to get you your item as fast as possible.

International Shipping:

• We ship worldwide. Limitations due to manufacturer's restrictions on some items may apply. The shipping costs do not include duty or import taxes so please check before you purchase an item. All international items will ship via USPS Priority Mail International or USPS Express Mail International for addition fee. Shipping times will vary depending on the country the item is being shipped to.

Combined Shipping:

• We do our best to combine shipping on orders. If you wish to ensure that multiple items you have purchased are combined please send us a message.

• We offer 60 day free returns!
• Returns must be in NEW/UNUSED condition in ORIGINAL PACKAGING.
• If the part is used there is a possibility that you will not receive a full refund, as we do have to resell the item.
• Electrical parts are NOT returnable.
• All Returns must be authorized by us and you will get a RMA number to put on the outside of the box.
• If an exchange needs to be made we will gladly work with you, however you must pay for shipping to return item AND shipping to get the new item to you.
• In the event that we make a mistake, they do happen occasionally (we are sorry), we will cover shipping costs to get you the correct item.