Wilwood sprint rear kit laid out with a gray four-piston caliper, thin solid titanium slotted rotor, splined axle clamp, adapter, pads and bracket
Wilwood gray inboard sprint caliper beside the assembled 12-inch thin solid titanium slotted rotor and splined center clamp
Wilwood sprint rear kit laid out with a gray four-piston caliper, thin solid titanium slotted rotor, splined axle clamp, adapter, pads and bracket
Wilwood gray inboard sprint caliper beside the assembled 12-inch thin solid titanium slotted rotor and splined center clamp

Wilwood 12-Inch Titanium Inboard Rear Brake Kit for Sprint Quick-Change Axles

SKU: 140-15346

$1,518.70 Sale
Shipping calculated at checkout.

Fitment questions?

Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.

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Product details

This race-only rear kit pairs a solid titanium rotor with a narrow four-piston caliper for the specified 46-spline sprint axle and side bell. Camarillo, California is home to Wilwood Engineering, founded by Bill Wood in 1977. Wilwood designs and manufactures disc brake systems, with calipers, brake rotors, master cylinders, fittings, valves and lines serving motorsport, street-performance and specialized uses. Select individual parts to meet the needs of the complete brake system.

Technical Details

  • Manufacturer: Wilwood
  • Manufacturer part number: 140-15346
  • Kit classification: Rear Brake Kits - Race
  • Axle position: Rear Kits
  • Brake Type: Disc
  • Selling unit: Sold as a kit.
  • Recommended Use: Race Only. Not for Street use.
  • Rotor Outside Diameter: 12.00 in
  • Rotor Thickness: 0.36 in
  • Rotor Material: Titanium
  • Surface Type: Slotted
  • Rotor construction: Solid
  • Bolt Circle Diameter: Splined
  • Rotor surface finish: Plain
  • Rotor vane / construction reference: Solid
  • Required spindle / rear housing interface: OEM
  • Spindle Included: No
  • Mounting Hardware Included: Yes
  • Separate wheel hubs included: Splined dynamic rotor axle clamp and adapter included; not a wheel hub
  • Master Cylinder Included: No
  • Brake Booster Included: No
  • Brake Lines Included: No
  • Pistons per service caliper: 4
  • Service-caliper piston material: Stainless steel
  • Service-caliper mounting: Radial
  • Caliper Color: Gray
  • Caliper Finish: Type III hard anodize
  • Caliper Inlet Port Diameter: 1/8-27 NPT
  • Caliper family: Narrow Dynalite radial-mount
  • Pad compound: BP-28

Fitment & Compatibility

Specify this solid-titanium configuration for the documented sprint quick-change installation: a 3.00-inch axle with 46 splines, standard inboard side bell and 3.50-inch mounting centers. The 12.00 × 0.36-inch rotor is solid rather than vented. Its floating rotor adapter and split axle clamp must be aligned according to DS-1278; neither is a conventional wheel hub. BP-28 pads and a narrow four-piston service caliper form the rear inboard brake. Supply suitable lines for the 1/8-27 NPT inlet and check the complete race hydraulic system. This kit is for racing only and must not be used on the street.

Wilwood product specifications · Installation instructions

For fitment assistance backed by more than 20 years of experience, share the installed brake configuration with PMB Performance before ordering.

Manufacturer warning — brake pads only: WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov.