The Crane Axle Front Super Duty Unit Bearing Lightweight Brake Kit is engineered for serious off-road performance, precision stopping power, and reduced unsprung weight. Every component in this system is handpicked to deliver reliable braking performance while minimizing rotating mass on your Magnum Knuckle Unit Bearing axle setup.

With larger 13.5" Wilwood vented rotors, forged 4-piston calipers, and Cranes precision-machined rotor hats, this kit provides a major increase in braking torque, improved pedal feel, and better shock responseallowing your suspension to work more efficiently and keeping the tires planted where they belong.

Includes:

• (2) Wilwood Forged Dynalite 4-Piston Calipers & Pads
• (2) Wilwood 13.5" Vented Rotors
• (2) Crane Axle Machined 6061 Aluminum Brake Hats
• (2) Crane Axle Bolt-On Front Brake Brackets
• All Necessary Mounting Hardware
• Safety Wire Ready Rotor Bolts

Compatible Unit Bearing Adapter

• Crane Axle Unit Bearing

Compatible Knuckle Kit

• Crane Axle Magnum Knuckle Kit

Specifications

• Calipers: Wilwood Forged Dynalite 4-Piston
• Total Piston Area: 4.80"
• Caliper Weight: 3.4 lb each
• Rotors: 13.5" Wilwood Vented
• Rotor Weight: 13.4 lb each
• Rotor Material: High-strength steel
• Brake Hats: Machined 6061 aluminum, corrosion-resistant coating
• Bracket Material: 3/8" laser-cut steel
• Wheel Bolt Patterns: Fits 8 on 6.5" and 8 on 170mm
• Wheel Compatibility: Designed to clear double beadlock wheels
• Design: Bolt-on for Crane Magnum Knuckle Unit Bearing Adapter

Fitment

Fitment Notes:

• • Fits 2005+ Ford Super Duty unit bearing front axle applications
  • Compatible with both 8x6.5" and 8x170mm wheel bolt patterns
  • Fits most double beadlock wheel combinations
  • Commonly used in fabricated axle housings, rock crawlers, Ultra4 cars, and custom off-road builds
  • Verify wheel backspacing, brake clearance, and unit bearing compatibility before installation
  • Crane Axle Magnum Knuckle Unit Bearing Adapter

Tech Insight

This kit was engineered to solve two problems found in traditional heavy brake systems: excess unsprung weight and inconsistent braking performance under off-road loads.

The forged Wilwood calipers significantly reduce flex under pressure, giving a firmer pedal feel and stronger clamping force. Paired with 13.5" rotors, the system increases braking torque by running more rotor surface area through the pads at any given wheel speedmeaning more friction with less pedal effort.

The reduced unsprung weight also has a direct effect on suspension performance. Lighter components allow your shocks to control the wheel more effectively, improving traction, reducing chatter, and keeping the vehicle more stable on rough terrain. When combined with Cranes precision-machined rotor hats and bolt-on brackets, the end result is a brake system that performs better, installs easier, and holds up to long-term abuse.