Ksport

Dualcomp 356mm 4-Piston Rear Big Brake Kit

$4,646.85

SKU: BKMZ050-445SO

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

This kit features a 4-piston caliper design combined with 356mm floating brake discs, utilizing SC5 Street Pads for optimal stopping power. The inclusion of stainless steel brake lines is a key upgrade, as they resist expansion under pressure, leading to a more immediate pedal response and a significantly firmer pedal feel than conventional rubber lines. Ksport Big Brake kits are built to order, and customers should anticipate a production and delivery lead time of approximately 4-6 weeks. The rotors can be specified as either slotted or cross-drilled. For daily driven vehicles, cross-drilled rotors are recommended for their superior cooling properties, while slotted rotors are advised for vehicles that will be used more frequently on the track. Fitment information for this kit indicates compatibility with the Mazda 6 from 2002-2008. It is recommended to confirm fitment for your specific vehicle using the search bar provided on the retailer's website. While the product is designed for the specified Mazda 6 models, it is crucial to verify compatibility to avoid ordering errors. If an issue arises due to a fitment recommendation made by the sales team, the retailer will work to rectify the situation, potentially waiving restocking fees if the item is returned in like-new condition.

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

BrandKsport
Part NumberBKMZ050-445SO
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

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.

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