Ksport

4-Piston Billet Aluminum Big Brake Kit

$3,207.60

SKU: BKNS340-447CO

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

Description

The calipers are crafted from a single piece of solid billet aircraft-grade aluminum, ensuring exceptional light weight, unparalleled strength, and resistance to corrosion. They feature 4-piston opposed-piston designs for improved pad grip and reduced uneven wear. The aluminum caliper pistons offer better heat resistance and lighter weight, while heavy-duty seals are incorporated for sustained high-temperature use. This kit includes 2-piece, vented, and drilled rotors made from cast iron with fixed aluminum centers. The 2-piece design with an aluminum center reduces rotational mass, leading to quicker braking response and shorter stopping distances. This construction also helps minimize rotor warpage by allowing for more unrestricted expansion and contraction of the outer iron section. Reinforced carbon steel caliper brackets allow the larger-than-OEM calipers to fit existing mounting points. The kit also includes stainless steel brake lines, which prevent expansion under high temperatures and pressures, resulting in a faster and more responsive pedal feel. The KSport SuperComp Big Brake Kit is specifically designed for the 2009-2018 Nissan 370z. It requires a minimum wheel diameter of 457mm (18 inches) and features 356mm (14 inch) outside diameter rotors.

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 NumberBKNS340-447CO
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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