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› Master Cylinders-Boosters and Components

Gktech

Flux Master Cylinder Kit

Name: Flux Master Cylinder Kit
Brand: Gktech
SKU: UNIV-2BLB-BUNDLE

$537.47

SKU: UNIV-2BLB-BUNDLE

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

This bundle is specifically intended for vehicles not covered by Gktech's specific fitting kits. The kit offers options for Flux master cylinders, which feature a durable black E-coating, high-pressure die-cast aluminum construction, and superior EPDM rubber seals, backed by a lifetime warranty against manufacturing defects.

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The Gktech universal dual brake master cylinder kit provides a straightforward method for enhancing control over your vehicle's braking system. Flux master cylinders are crafted for durability, featuring a black E-coating and a high-pressure die-cast aluminum body. They are equipped with superior quality EPDM rubber seals and come with a lifetime warranty against manufacturing defects. You have the choice between a remote-mount reservoir, as shown in product photos, or an internal reservoir design where the reservoir is integrated into the master cylinder body, eliminating the need for an external component. Optional components can enhance the kit's functionality. A Wilwood Tandem Mount Balance Bar allows for brake bias control by mounting in place of a standard horizontal bolt pattern tandem master cylinder, providing a secure location for two vertical bolt pattern master cylinders. Additionally, a Wilwood Remote Balance Bar Cable Adjuster can be added for in-cabin adjustment of front-to-rear brake bias during changing race conditions. It is important to research master cylinder options that best suit your specific setup, as there are numerous variables involved, and GKtech cannot advise on the best choice for every individual car. The product does not come with specific vehicle fitment recommendations beyond the listed compatible models, and users are advised to determine their own pedal ratio, especially for non-brake booster setups.

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

Brand	Gktech
Part Number	UNIV-2BLB-BUNDLE
Category	Brakes

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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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