Wilwood 170-12538 GT Series Big Brake Short Offset Drag Front Rotor Hat

The Wilwood 170-12538 is a GT Series Big Brake Short Offset disc brake rotor hat precision machined from premium aluminum alloy, engineered to deliver maximum strength while keeping unsprung weight to a minimum. Designed for front drag brake applications, this hat features a 1.07-inch offset, a 6 x 6.25-inch bolt circle, and a 5 x 3.345-inch rotor mount pattern, making it well-suited for narrow-clearance applications where space is at a premium.

Key Features:

• Short Offset Design: Offset value of 1.07" optimized for tight, narrow-space installations
• Threaded Rotor Mount Holes: Compatible with standard through-hole mount rotors for secure, reliable attachment
• T-Nut / Bobbin Compatible: Threaded holes also accept T-Nuts or bobbins for use with slotted-hole dynamic mount rotors
• Bolt Circle: 6 x 6.25-inch wheel bolt circle
• Rotor Mount Pattern: 5 x 3.345-inch rotor mount pattern
• Premium Aluminum Alloy Construction: Precision machined for tight tolerances and long-term durability
• Wilwood Rotor Hardware Kit Compatible: Designed for use with matched Wilwood rotor hardware kits for solid, reliable performance in demanding conditions

The 170-12538 is part of Wilwood's extensive lineup of GT Series hats, available for most rotor bolt patterns across a variety of four- and five-lug wheel configurations. Whether used in drag racing or high-performance street builds, this rotor hat pairs seamlessly with Wilwood's broad range of rotors and hardware to deliver consistent, race-proven braking performance.