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Two Brothers Racing

S1R Slip-On System

$522.48 $450.00 Save $72.48

SKU: 005-3850406-S1B

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Two Brothers Racing S1R Slip-On System is a performance exhaust designed for the Yamaha R6. It features a lightweight construction and is available in either polished aluminum or aerospace-grade carbon fiber, with a Teflon-coated magnesium end-cap.
Show original supplier description
The Two Brothers Racing S1R Slip-On System is engineered to enhance the performance of your Yamaha R6, offering a noticeable increase in power and a distinctive sound. This system showcases a brand-new design with a focus on lightweight construction, utilizing either 6063 T6 polished aluminum or high-temperature aerospace carbon fiber for the main canister. The S1R features a spiral-wound perforated core for optimal exhaust flow and sound. The inlet is a stamped spring-fit design for secure mounting, while the outlet is precisely CNC-machined from aluminum. The exhaust mount is rubber-lined for vibration dampening and a styled appearance. The Teflon-coated magnesium end-cap adds a durable and premium finish. This exhaust system accepts sound reduction tips, allowing for customization of the sound output. However, it is important to note that this product is for closed-course competition ONLY and is not intended for street use. Additionally, this exhaust is not CARB Approved and cannot be shipped to California. It is made in the USA and is designed to complement the aggressive styling of the Yamaha R6.

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

BrandTwo Brothers Racing
Part Number005-3850406-S1B
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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