Wilwood 170-15920 Big Brake Short Offset Disc Brake Rotor Hat 4x4 / 6x6.25

The Wilwood 170-15920 is a Big Brake Short Offset disc brake rotor hat precision machined from premium aluminum alloy for superior strength and minimized weight. This hat features a front-mounting, backside hub mount design — the opposite of traditional over-the-hub mounting — making it well-suited for big brake upgrade applications that require a hub-side rotor attachment.

Designed specifically with a 4 x 4.00-inch wheel bolt circle and a 6 x 6.25-inch rotor bolt circle, this hat delivers an accurate, application-specific fit. The 0.725-inch offset and 3.130-inch center bore provide precise positioning for proper rotor and wheel alignment. Rotor mount holes are threaded for use with standard through-hole mount rotors, ensuring a secure and rattle-free assembly.

Key Features:

• Rotor Bolt Pattern: 6 x 6.25 in
• Wheel Bolt Pattern: 4 x 4.00 in
• Offset: 0.725 in
• Center Bore: 3.130 in
• Construction: Precision-machined premium aluminum alloy
• Finish: Black paint
• Mount Style: Big Brake Short Offset — front backside hub mount
• Rotor Mount Holes: Threaded, for use with through-hole mount rotors
• Sold individually (each)

Wilwood rotor hats are engineered to deliver consistent performance in high-demand street and competition brake systems. The lightweight aluminum construction helps reduce unsprung weight while maintaining the structural integrity required for big brake caliper applications.