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Wilwood 170-8919 GT Series Brake Rotor Hat .290" Offset Front

Manufacturer

Wilwood

<p>Founded in 1977 by Bill Wood, Wilwood Engineering has spent nearly five decades establishing itself as a global leader and manufacturer of high-performance, Original Equipment (OE), disc brake solutions. What began as a small California operation has evolved into one of the most respected names in braking technology, serving applications that range from weekend autocross events to professional racing circuits, and even extending to military vehicles and industrial equipment.</p><h3>Engineering Excellence and Innovation</h3><p>Wilwood's early years were marked by the development of cutting-edge brake components for a diverse range of vehicles, including race cars, street rods, muscle cars, and off-road vehicles. The company's engineering philosophy centers on creating solutions that deliver consistent, fade-resistant stopping power under the most demanding conditions. Wilwood has on-shelf stock of over 300 different brake calipers, 200 rotor designs, 100 master cylinder designs and a wide assortment of brackets, fittings, valves and brake lines, giving enthusiasts and professionals an extensive selection for virtually any application.</p><h3>Comprehensive Brake System Solutions</h3><p>At the heart of Wilwood's product lineup are their <a href="/764-wilwood-disc-brake-kit-60407">disc brake kits</a>, which provide complete, bolt-on solutions for vehicles ranging from classic muscle cars to modern performance machines. These kits integrate precisely matched components—calipers, rotors, brackets, and hardware—engineered to work together for optimal performance and easy installation. Whether you're converting from drum brakes or upgrading an existing disc setup, Wilwood's application-specific kits take the guesswork out of the process.</p><p>The company's <a href="/764-wilwood-disc-brake-caliper-1704">disc brake calipers</a> represent decades of refinement in caliper design and manufacturing. Off-shelf brake calipers range in size from tiny calipers used on go-carts and light duty industrial equipment, to heavy duty original equipment brakes for the U.S. military Humvee. Available in multiple piston configurations and finish options, these calipers combine lightweight construction with exceptional rigidity and heat dissipation characteristics crucial for sustained high-performance use.</p><p>Wilwood makes a wide assortment of small, lightweight master cylinders that are suitable for high performance street and racing applications and they are available in a variety of bore sizes. Their <a href="/764-wilwood-brake-master-cylinder-1836">brake master cylinders</a> are critical components that translate pedal pressure into precise hydraulic force, and Wilwood offers both tandem and single-chamber designs to match different system requirements. Proper master cylinder sizing is essential for achieving the ideal pedal feel and modulation characteristics that experienced drivers demand.</p><h3>Racing Heritage and Real-World Performance</h3><p>By leveraging advanced materials, innovative design concepts, and rigorous testing procedures, Wilwood continued to set new benchmarks for braking performance. The brand's components are proven on road courses, drag strips, and oval tracks worldwide, where split-second stopping distances and consistent brake feel can mean the difference between victory and defeat. Wilwood is ISO 9000 compliant and has extensive experience maintaining quality levels of 100ppm or less for original equipment manufacturers, ensuring that every component meets exacting standards for reliability and performance.</p><p>For enthusiasts upgrading their street machines or building dedicated track cars, Wilwood provides the engineering expertise and component quality that professionals rely on. Their products address the fundamental challenges of braking performance: managing heat, reducing unsprung weight, maintaining consistent friction characteristics, and delivering precise pedal modulation. Whether you're chasing lap times or simply want confidence-inspiring stopping power for spirited driving, Wilwood's comprehensive brake system solutions deliver measurable improvements in vehicle control and safety.</p>

Part Number

170-8919
08/13/2036 5:28 AM
Sale Price

$200.65

In Stock (10+)

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Usually delivered within 2 days

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Live-in-stock inventory

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Fitment guaranteed

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Product Details

The Wilwood 170-8919 is a GT Series Big Brake short offset rotor hat designed for high-performance brake systems in narrow space applications. Precision-machined from premium aluminum alloys, this hat delivers exceptional strength while maintaining minimal weight for optimal performance.

Key Features:

  • Threaded rotor mount holes for use with standard through-hole mount rotors
  • Compatible with T-Nuts or bobbins for specially machined slotted hole dynamic mount rotors
  • .290" front offset design for tight clearance applications
  • Premium aluminum alloy construction for high strength-to-weight ratio
  • Precision machining ensures reliable, secure rotor mounting
  • Designed for use with Wilwood rotor hardware kits for complete system integration

This short offset hat is engineered for demanding racing and high-performance street applications where space is limited. The threaded mounting system provides versatile compatibility with various rotor configurations, making it an ideal choice for custom brake system builds and upgrades.

Products specifications

Application Note

Corvette C6

Bolt Pattern

5x4.75 - 12 on 8.75"

Center Reg. (In.)

2.78

Finish

Black E-Coat

Hat Bolt Circle 1

5 x 4.75

Hat Bolt Kit Part #

230-8008

Hat Offset (In.)

0.29

Mount Hole Type

Threaded

Mount Style

Fixed Mount

Offset

.290"

Rotor Bolt Circle (in.)

12 x 8.75

Weight (Lbs.)

2.3

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