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Ksport BKBM115-433SO Procomp Big Brake Kit with Floating Rotor and Multi-Piston Caliper Options

(2009-2010 BMW 535i xDrive; 2008 BMW 535xi)

Manufacturer

Part Number

BKBM115-433SO
Sale Price

$2,304.23

Estimated ship date Monday, November 23

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No Hassle Returns

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Fitment guaranteed

Product Details

The Ksport BKBM115-433SO Procomp Big Brake Kit delivers a significant upgrade in stopping power over stock brake systems. Engineered to dramatically reduce brake fade and continuously cool and refresh the brake pad surface under hard braking, this kit is a sophisticated bolt-on upgrade designed for easy installation with minimal tools required in most applications.

Caliper Construction:

  • Available in 4, 6, or 8 piston opposed-piston configurations for enhanced pad wear and caliper rigidity over OEM designs
  • Lightweight one-piece caliper CNC machined from aircraft-grade billet aluminum — weighing just over 5 lbs. each
  • Differential bore configuration for optimized clamping force across the full pad surface
  • Machined-in protection grooves for bridge tubes
  • Aluminum pistons for superior heat resistance and reduced unsprung weight
  • High-temperature seals and stainless-steel brake pad wear plates standard on every caliper

Rotor Design:

  • Two-piece floating disc assembly reduces both rotating and unsprung weight
  • Full-floating rotor design allows the outer ring to shift slightly as needed, preventing thermal stress from warping the disc or cupping the braking surface, and enabling better self-centering in the caliper for lower brake drag
  • Unique slot design expels gas and pad debris faster than conventional rotor designs while significantly reducing braking noise
  • Every rotor is heat treated and balanced prior to shipment for consistent, high-performance operation
  • Available in Cross Drilled or Slotted rotor styles — cross drilled recommended for daily-driven street use; slotted recommended for track or performance-focused driving

Brake Lines & Hardware:

  • D.O.T.-compliant stainless-steel braided brake lines eliminate hose expansion under pressure for quicker pedal response and a firmer pedal feel over stock rubber lines
  • All OEM ABS systems remain fully functional with this kit installed

Warranty: All Ksport Big Brake Kits are backed by a 12-month warranty covering manufacturer defects. Note: Ksport Big Brake Kits are built to order — please allow 4–6 weeks for production and delivery.

Products specifications

Fits

2009-2010 BMW 535i xDrive; 2008 BMW 535xi

Pad Shims Included

No

Rotor Outside Diameter

13 IN

Color

Orange

Disc Brake Rotor Construction

Vented

Ksport Product Sub-Category

Procomp Big Brake Kit

Rotor Type

Fixed

Caliper Piston Quantity

4

Surface Type

Slotted

Caliper Inlet Port Diameter

M10 x 1

Rotor Style

Slotted

Position

Rear

Rotor Width mm

32

Caliper Type

4 Piston

Ksport Product Category

Big Brake Kits

Friction Material Composition

Ceramic

Rotor Diamater (mm)

330

Rotor Diamater (in)

13

Subject to CARB? Yes/No

No

Caliper Slides Included

Yes

Anti-Rattle Spring Included

Yes

Great so far!

Still have not gotten the wheel

Super easy ordering and great follow up of order process. Arrived quickly direct from the manufacturer.

I thought my order was going to take longer to ship and it surprised me after I called Autoplicity I thought another few days before it shipped and it arrived. The lowest price I found on my Mishimoto radiator was on Autoplicity.

Items ordered were correctly supplied. Ordered items on a Saturday and received them the following Thursday. I was hoping to get them a bit sooner.

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