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Sundown Audio

U SERIES 8IN D2 (600WATTS) SUBWOOFER

$349.99

SKU: S0FJ SW-UV18D2

In Stock
In Stock
Ships by Jun 10
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The U-8 is a high-performance 8-inch subwoofer from Sundown Audio, designed to exceed the capabilities of the SA-8 v3 with increased power handling, excursion, and output. It features a patented frame for superior spider and clearance, offering 18mm of one-way linear excursion and robust mechanical capacity.

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

BrandSundown Audio
Part NumberS0FJ SW-UV18D2

Videos

Sundown U8 Review. Jacob Fuller has done it again!

Sundown U8 Review. Jacob Fuller has done it again!
Sundown 8" Woofer Line-Up Overview

Sundown 8" Woofer Line-Up Overview
Sundown U-8 vs Massive H82XR - The Ultimate Subwoofer Showdown

Sundown U-8 vs Massive H82XR - The Ultimate Subwoofer Showdown
*Quick Review* Sundown U-8" 600w Subwoofer

*Quick Review* Sundown U-8" 600w Subwoofer
Sundown u8 vs e8 v6 size comparison

Sundown u8 vs e8 v6 size comparison

Buy with Confidence

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