Mobile Electronics› Vehicle Audio and Components

Pioneer

Replacement Diaphragm Repair Kit

$40.00

SKU: UD-RP401PRO

Special Order
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Overview

The Pioneer UD-RP401PRO is a replacement diaphragm repair kit for the TS-B401PRO 4" High Efficiency Bullet Tweeter. It features 600 Watts Max Power and 300 Watts Nominal Power handling.
Show original supplier description
The Pioneer UD-RP401PRO is a field repair kit specifically designed for the TS-B401PRO 4" High Efficiency Bullet Tweeter. This kit allows you to restore your existing tweeter, emphasizing efficiency and power handling. Key features of the UD-RP401PRO include a robust 600 Watts Max Power and 300 Watts Nominal Power handling capacity, a durable titanium diaphragm for crisp sound reproduction, and a 4-ohm impedance. Series lineup. The kit comes with a titanium diaphragm pre-assembled on a composite plate that incorporates alignment guides, simplifying the mounting process for a hassle-free installation. A high-pass filter is also included, though it is sold individually. The Pioneer P.R.O. Series is inspired by the brand's history in SPL competition, tailored for enthusiasts aiming to produce significant sound pressure levels.

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

BrandPioneer
Part NumberUD-RP401PRO
CategoryMobile Electronics

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

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