Exhaust› Exhaust Pipes, Systems and Components

Dean Adams Designs

RT-4 Exhaust System

$975.00

SKU: 10000000010

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 Buell 1125R/CR RT-4 is an exhaust system designed and calibrated in-house. It offers an average HP gain of +14 over stock and fits Buell 1125R or CR models. The highest HP output recorded was 143.1 hp on a dyno at the Buell/EBR factory.
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The Buell 1125R/CR RT-4 is an exhaust system meticulously designed and calibrated in-house by Dean Adams Designs. This system is engineered to provide a noticeable performance upgrade, with an average horsepower gain of +14 over stock. Hand-fabricated in-house, the RT-4 exhaust system is built to order, which may result in a lead time of 2 to 6 weeks. The highest horsepower output documented to date was 143.1 hp, achieved on a dyno at the Buell/EBR factory. For those seeking an enhanced aesthetic, a polished version is available for an additional cost of $125. This exhaust system is specifically designed to fit Buell 1125R or CR models. It's important to note that the ECM (Engine Control Module) is not included in the base price and must be added as an option if required for your application.

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

BrandDean Adams Designs
Part Number10000000010
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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