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Exhaust› Mufflers and Resonators

M4

Street Slayer Slip-On Muffler w/ Q9 Quiet Insert

$524.00 $497.99 Save $26.01

SKU: KA9964

Out of Stock
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The M4 Street Slayer Slip-On is a carbon canister exhaust designed for the 2021-2026 Kawasaki ZX-10R. This slip-on system removes the stock catalytic converter, offering a "sweet look, great sound, and better performance." It comes with a Stage 1 Q9 quiet insert installed and can accommodate a Stage 2 quiet insert, which is sold separately. The tubing is constructed from stainless steel.
Show original supplier description
The M4 Street Slayer Carbon Slip-On exhaust system is engineered to enhance the performance of the Kawasaki ZX-10R models from 2021 to 2026. This slip-on exhaust is designed to remove the stock catalytic converter, which not only adds power but also significantly reduces the motorcycle's overall weight by over 10 pounds. The system features a carbon canister, offering a sleek aesthetic, a powerful sound, and improved performance. This M4 exhaust is specifically designed for the 2021-2026 Kawasaki ZX-10R. It is important to note that this product does not meet emission requirements for street or highway use. Additionally, the Stage 1 Q9 quiet insert is included to help manage sound levels.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandM4
Part NumberKA9964
CategoryExhaust
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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