Sale

Ksport

Slimline Big Brake Kit Front

$3,303.30 $3,138.14 Save $165.16

SKU: BKBM141-342CO

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

Description

The Ksport Slimline Big Brake Kit is engineered as a front big brake system specifically for the BMW E85/E86 Z4 M, featuring a 350x22mm rotor size. This kit utilizes a lightweight forged one-piece caliper, constructed from aerospace-quality aluminum, eliminating weak spots and ensuring strength and even thickness. The opposed-piston design promotes consistent brake pad grip and wear, while heavy-duty seals and titanium retainer clips handle high temperatures. The 6061-T6 aircraft-grade aluminum center sections lower rotational mass, enhancing brake response. This design also reduces the likelihood of rotor warping due to heat expansion, as the outer section can move independently. These rotors are heat-treated and balanced for optimal performance, with cross-drilled options recommended for daily driving to run cooler than slotted rotors. Kits come standard with everything needed for installation, including calipers, floating brake discs, brake pads (SC5 Street Pads included, with an option to upgrade to RCI Race Pads), and all required hardware. D.O.T. compliant stainless-steel braided brake lines are also standard, providing quicker pedal response and a firmer pedal feel. The Slimline caliper design is intended to fit within most factory wheels or those with limited caliper clearance. This product is made to order and is non-refundable.

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 NumberBKBM141-342CO
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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