Product images and videos 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.

Brakes› Brake Cooling Kits and Components

Singular Motorsports

2.5" Brake Ducts

Name: 2.5" Brake Ducts
Brand: Singular Motorsports
SKU: SMS-BD25NX-01

$129.00

SKU: SMS-BD25NX-01

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Easy — 1–2 hours

Overview

They are precision waterjet and TIG welded and made in the USA. These 2.5" ducts are compatible with factory undertrays and can clear 15x9" wheels without spacers.

Show original supplier description

The Singular Motorsports 2.5” brake ducts are engineered to enhance braking performance for 1990-2005 Mazda Miatas with 14” or larger wheels. Installation of these 2.5” ducts is straightforward, with compatibility for factory undertrays requiring minimal to no modifications. They are designed to clear 15×9″ wheels while the factory undertray remains intact, and without the need for spacers. For those seeking maximum cooling with the least amount of modification, the 2.5” hose size is recommended. While larger 3” hoses can offer greater cooling, they typically require a non-factory undertray to clear 9” wheels or larger. Even with the factory plastic undertray removed, 3” hose may require a 5mm spacer to clear 15×9 and 15×10 wheels. Singular Motorsports recommends utilizing the largest brake duct size that can be accommodated on your vehicle to maximize the benefits of increased cooling and component longevity.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

Brand	Singular Motorsports
Part Number	SMS-BD25NX-01
Category	Brakes

5,000+ Trusted brands

1M+ Enthusiasts

5M+ Parts sold

(760) 282-4645 hello@motormia.co

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy