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Exhaust› Mufflers and Resonators

M4

Exhaust Muffler Box Eliminator with Carbon Fiber Street

$569.00 $540.55 Save $28.45

SKU: YA6624-MBE

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In Stock
Ships by Aug 31
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The M4 Exhaust Muffler Box Eliminator is a slip-on exhaust system featuring a Carbon Fiber Street Slayer Canister. This system includes a Stage 1 Q5 Quiet Insert installed and offers a Stage 2 Quiet Insert sold separately.
Show original supplier description
The M4 Exhaust Muffler Box Eliminator with Street Slayer Canister is a performance exhaust system designed to enhance your Yamaha YZF-R6. It features a visually striking Carbon Fiber Street Slayer Canister and Stainless Steel tubing for durability and optimal exhaust flow. This system is engineered to remove the stock muffler box, contributing to a weight savings of 8.5 lbs over the original equipment. It provides a true high-flow merge collector for improved exhaust scavenging and performance. The exhaust comes with a Stage 1 Q5 Quiet Insert pre-installed, with an optional Q4 Stage 2 Quiet Insert available for purchase separately. Installation of this Muffler Box Eliminator Kit requires cutting the stock exhaust system at the muffler box. This is described as a simple procedure using common tools. Several online resources, including YouTube videos, demonstrate the installation process for the M4 Street Slayer slip-on exhaust on various Yamaha R6 models. It is important to note that all M4 systems are designed and intended for closed-course competition use only.

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 NumberYA6624-MBE
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.

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