Brakes› Brake Systems And Components

Dobinsons

Rear Brakeline Extension Kit

$23.41

SKU: WA21-584K

In Stock
In Stock
Ships by Sep 9
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
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Easy — 1–2 hours

Overview

The Dobinsons WA21-584K Brakeline Extension Kit is a heavy-duty steel component designed to adjust rear brake lines. This allows for the fitment of longer travel shocks, which is beneficial for lifted vehicles. It helps prevent brake line tension or damage during suspension articulation.
Show original supplier description
The Dobinsons WA21-584K Brakeline Extension Kit is a robust solution engineered to optimize your vehicle's rear brake system, especially when upgrading to longer travel shocks. Constructed from heavy-duty steel, this kit is built for durability and reliable performance under demanding conditions. Its primary function is to extend the rear brake lines, providing the necessary slack to accommodate the increased travel of upgraded shock absorbers. This is crucial for lifted vehicles where suspension articulation can otherwise lead to brake line strain or damage. Installation of this kit is recommended when fitting longer travel shocks to prevent potential issues with brake line tension. By adjusting the brake lines, it ensures safe and proper operation of the braking system, even with significant suspension movement. Fitment details indicate this kit is designed for specific applications, notably for the Isuzu D-Max TFS40 (Mid 2020 on) and Mazda BT-50 (2020-2024+). It is also noted as being required when using certain Dobinsons rear shocks, such as the GS43-081B, IMS43-50081B, and MRA43-A081B, for GM and Holden vehicles as well.

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

BrandDobinsons
Part NumberWA21-584K
CategoryBrakes

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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

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