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Exhaust› Exhaust Pipes, Systems and Components

Two Brothers Racing

S1R Exhaust System

Name: S1R Exhaust System
Brand: Two Brothers Racing
SKU: 005-3860106-S1B

$1,099.98 $1,045.64 Save $54.34

SKU: 005-3860106-S1B

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$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Two Brothers Racing S1R exhaust is a performance exhaust system designed to increase all-around performance. It features a lightweight construction and a killer sound. The exhaust is made in the USA and is available in either 6063 T6 Polished Aluminum or Aerospace high-temp carbon fiber.

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The Two Brothers Racing S1R exhaust system is engineered to enhance the performance of your motorcycle. Showcasing a brand-new design, this exhaust promises increased power output and a distinct, aggressive sound. Crafted with lightweight materials, it contributes to a more agile riding experience. The end-cap is made of Teflon-coated magnesium, ensuring durability. Its inlet is a stamped spring-fit design, and the outlet is precisely CNC machined from aluminum. The exhaust mount is rubber-lined for style and vibration dampening, while the core is a spiral-wound perforated design. This system also accepts sound reduction tips, allowing for some customization of the acoustic output. This exhaust system is noted as being Not CARB Approved and will not ship to California. Additionally, it is intended for closed course competition purposes only and is sold "as is" without warranty. Buyers should also be aware that this is an oversized item, which may affect return shipping eligibility. A PROP 65 WARNING is also in effect, indicating potential cancer and/or reproductive harm.

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

Brand	Two Brothers Racing
Part Number	005-3860106-S1B
Category	Exhaust

Videos

Two Brothers Racing Full System Exhaust Install

Two Brothers Racing - Slip-On Installation Tutorial

2020 Kawasaki ZX6R Two Brothers S1R Slip On Exhaust vs Stock (Cold Start and Revs)

Two Brothers Full Exhaust Install (Kawasaki ZX6R)

2015 Kawasaki Ninja zx6r with two brothers racing exhaust

Two Brothers Racing: S1R Black Exhaust System - 2016 Kawasaki ZX-10R

2019 Kawasaki Zx6r 636 Two Brothers s1r exhaust + TST Industries Fender Eliminator Kit

Two Brothers Racing - 2014 Kawasaki ZX6R S1R Slip-on Exhaust System

Two brothers racing exhaust Kawasaki zx6r 2015

Two Brothers Racing - S1R Race Exhaust Systems

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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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