Exhaust› Mufflers and Resonators

Pro Circuit

R304 Shorty Silencer

$206.29

SKU: SY02125-RE

Special Order
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 Pro Circuit R304 Shorty Silencer is a race-only muffler designed to optimize exhaust flow. It features a lightweight extruded 6061 T-6 aluminum body with a brushed finish and a domed, euro-style end cap. The stainless-steel end cap and intake tube are complemented by high-strength aluminum rivets and steel Allen-head screws for easy disassembly. This silencer includes double-walled mounting brackets and exclusive E-glass pillow packing.
Show original supplier description
The Pro Circuit R304 Shorty Silencer is a race-only muffler that features a short body and reduced packing volume to optimize exhaust flow for motocross professionals. Constructed with a lightweight extruded 6061 T-6 aluminum body and a brushed finish, it is paired with a stainless-steel end cap and intake tube. It also includes double-walled mounting brackets and exclusive E-glass pillow packing for effective sound dampening. This muffler is specifically designed for the 2002-2021 Yamaha YZ125 and the 2020-2022 Yamaha YZ125X dirt bikes. Please note that no mounting hardware or instructions are included with this product. The package contains one silver stainless steel silencer. This item is subject to the manufacturer's advertising policy and is excluded from promotions and discounts.

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

BrandPro Circuit
Part NumberSY02125-RE
CategoryExhaust
5,000+ Trusted brands
1M+ Enthusiasts
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(760) 282-4645 hello@motormia.co

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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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