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Brakes› Master Cylinders-Boosters and Components

RIGHT STUFF DETAILING

Booster Master Cylinder Combo Disc/Drum Black

$492.15 $425.99 Save $66.16

SKU: R04Q B85315171

In Stock
In Stock
Ships by Sep 13
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Right Stuff Detailing B85315171 is a booster master cylinder combo kit designed for disc/drum brake applications. This universal kit features a 1.125-inch bore size and a dual integral reservoir with an 8-inch outer diameter. Constructed from aluminum and finished in black paint, it utilizes a dual diaphragm design.
Show original supplier description

Part #: B85315171

Master Cylinder and Booster - 1-1/8 in Bore - Dual Integral Reservoir - 8 in OD - Dual Diaphragm - Disc / Drum - Aluminum - Black Paint - Universal - Kit

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

BrandRIGHT STUFF DETAILING
Part NumberR04Q B85315171

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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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