Bikers Choice Master Cylinder 3/4 Inch Bore Chrome — Fits 73-81 Harley-Davidson Big Twin & XL

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Sale price$149.99 Regular price$238.99
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Bikers Choice

Bikers Choice engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Bikers Choice lineup with fast shipping and expert fitment support — order with confidence.

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Premium Chrome Master Cylinder for Vintage Harley-Davidson

Upgrade your vintage motorcycle's braking system with the Bikers Choice 3/4 inch bore chrome master cylinder. Designed to replicate the performance and aesthetics of the original equipment, this unit is a direct replacement for Harley-Davidson part 45010-73. Whether you are restoring a classic FLH Electra Glide or a custom FX Super Glide, this master cylinder provides the reliable hydraulic pressure needed for safe operation.

Key Features and Fitment

  • Precision-engineered 3/4 inch bore for consistent brake feel
  • High-quality chrome finish for a show-ready look
  • Direct replacement for H-D 45010-73
  • Compatible with 1973-1981 Big Twin and XL models
  • Durable construction ensures long-lasting performance

This master cylinder is specifically engineered to fit a wide range of iconic Harley-Davidson motorcycles, including the FXE Super Glide, FXS Low Rider, and the FLHS Electra Glide Sport. By maintaining the correct bore size, you ensure that your front brake system operates exactly as intended by the factory. Installation is straightforward for those familiar with vintage Harley brake systems, making it an ideal choice for both professional mechanics and DIY enthusiasts looking to maintain their classic ride. Trust in the quality of Bikers Choice components to keep your motorcycle performing at its best. Find all your essential vintage motorcycle parts at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1980-1981 Harley-Davidson FLHS Electra Glide Sport Base
1972-1978 Harley-Davidson FX Super Glide Base
1980-1981 Harley-Davidson FXB Sturgis Base
1974-1981 Harley-Davidson FXE Super Glide Base
1979-1981 Harley-Davidson FXEF Fat Bob Base
1980-1981 Harley-Davidson FXWG Wide Glide Base

Product Details

Product Description
Part Numbers
Sizing & Fit

About Bikers Choice

Bikers Choice engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Bikers Choice lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Premium Chrome Master Cylinder for Vintage Harley-Davidson

Upgrade your vintage motorcycle's braking system with the Bikers Choice 3/4 inch bore chrome master cylinder. Designed to replicate the performance and aesthetics of the original equipment, this unit is a direct replacement for Harley-Davidson part 45010-73. Whether you are restoring a classic FLH Electra Glide or a custom FX Super Glide, this master cylinder provides the reliable hydraulic pressure needed for safe operation.

Key Features and Fitment

  • Precision-engineered 3/4 inch bore for consistent brake feel
  • High-quality chrome finish for a show-ready look
  • Direct replacement for H-D 45010-73
  • Compatible with 1973-1981 Big Twin and XL models
  • Durable construction ensures long-lasting performance

This master cylinder is specifically engineered to fit a wide range of iconic Harley-Davidson motorcycles, including the FXE Super Glide, FXS Low Rider, and the FLHS Electra Glide Sport. By maintaining the correct bore size, you ensure that your front brake system operates exactly as intended by the factory. Installation is straightforward for those familiar with vintage Harley brake systems, making it an ideal choice for both professional mechanics and DIY enthusiasts looking to maintain their classic ride. Trust in the quality of Bikers Choice components to keep your motorcycle performing at its best. Find all your essential vintage motorcycle parts at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1980-1981 Harley-Davidson FLHS Electra Glide Sport Base
1972-1978 Harley-Davidson FX Super Glide Base
1980-1981 Harley-Davidson FXB Sturgis Base
1974-1981 Harley-Davidson FXE Super Glide Base
1979-1981 Harley-Davidson FXEF Fat Bob Base
1980-1981 Harley-Davidson FXWG Wide Glide Base

Product Details

Product Description

About Bikers Choice

Bikers Choice engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Bikers Choice lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Premium Chrome Master Cylinder for Vintage Harley-Davidson

Upgrade your vintage motorcycle's braking system with the Bikers Choice 3/4 inch bore chrome master cylinder. Designed to replicate the performance and aesthetics of the original equipment, this unit is a direct replacement for Harley-Davidson part 45010-73. Whether you are restoring a classic FLH Electra Glide or a custom FX Super Glide, this master cylinder provides the reliable hydraulic pressure needed for safe operation.

Key Features and Fitment

  • Precision-engineered 3/4 inch bore for consistent brake feel
  • High-quality chrome finish for a show-ready look
  • Direct replacement for H-D 45010-73
  • Compatible with 1973-1981 Big Twin and XL models
  • Durable construction ensures long-lasting performance

This master cylinder is specifically engineered to fit a wide range of iconic Harley-Davidson motorcycles, including the FXE Super Glide, FXS Low Rider, and the FLHS Electra Glide Sport. By maintaining the correct bore size, you ensure that your front brake system operates exactly as intended by the factory. Installation is straightforward for those familiar with vintage Harley brake systems, making it an ideal choice for both professional mechanics and DIY enthusiasts looking to maintain their classic ride. Trust in the quality of Bikers Choice components to keep your motorcycle performing at its best. Find all your essential vintage motorcycle parts at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1980-1981 Harley-Davidson FLHS Electra Glide Sport Base
1972-1978 Harley-Davidson FX Super Glide Base
1980-1981 Harley-Davidson FXB Sturgis Base
1974-1981 Harley-Davidson FXE Super Glide Base
1979-1981 Harley-Davidson FXEF Fat Bob Base
1980-1981 Harley-Davidson FXWG Wide Glide Base

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