Description

This part is a front brake master cylinder assembly designed for motorcycles with a dual front brake disc setup. It is responsible for converting the mechanical force from the front brake lever into hydraulic pressure, which then activates the front brake calipers and applies pressure to the brake pads, resulting in braking action on both front discs.

Key Features:
Material: The master cylinder is typically made from high-quality aluminum or steel and is coated with a durable black finish. The finish provides a sleek, custom look while also offering corrosion resistance, helping to protect the part from exposure to the elements.
Dual Disc Setup: The “Dual” designation indicates that this assembly is designed for use with motorcycles that have two front brake discs, commonly found on larger or more powerful Harley-Davidson models.
Complete Assembly: The kit includes the master cylinder, piston, brake fluid reservoir, seals, and other necessary components for installation. It is a complete solution for replacing the master cylinder assembly on compatible bikes.
OEM Fitment: As an OEM part, the HD45170-08F is designed to meet Harley-Davidson’s factory specifications, ensuring it fits and functions properly on compatible bikes.

Functionality:
Hydraulic Pressure Generation: When the rider pulls the front brake lever, the master cylinder generates hydraulic pressure by moving the piston inside the cylinder. This pressure pushes brake fluid through the brake lines to the front brake calipers, where it forces the brake pads to clamp onto the rotors and slow the motorcycle.
Fluid Reservoir: The master cylinder assembly includes a fluid reservoir that stores brake fluid to ensure there is enough hydraulic fluid for the system to operate properly and consistently.
Dual Disc Braking: Designed specifically for dual-disc braking systems, this master cylinder assembly can effectively manage the braking pressure needed to operate two front brake calipers, providing improved stopping power.

Applications:
Harley-Davidson Touring Models: This front brake master cylinder assembly may be compatible with various Harley-Davidson Touring models that have dual front brake discs, such as the Road King, Electra Glide, Street Glide, and Ultra Limited.
Harley-Davidson Softail Models: Certain Softail models with dual front brake discs (like the Fat Boy, Heritage Softail, and Breakout) may also be compatible with this master cylinder assembly.
Harley-Davidson Dyna Models: Some Dyna models with dual front brake discs (such as the Low Rider or Fat Bob) could use this master cylinder assembly.
Harley-Davidson CVO Models: Custom Vehicle Operations (CVO) models equipped with dual front brake discs may also use this assembly.

Possible Models Compatible with:
Harley-Davidson Touring Models: Electra Glide, Road King, Street Glide, Ultra Limited (dual front disc versions).
Harley-Davidson Softail Models: Fat Boy, Heritage Softail, Breakout (dual front disc versions).
Harley-Davidson Dyna Models: Low Rider, Wide Glide, Fat Bob (dual front disc versions).
Harley-Davidson CVO Models: Certain CVO models with dual front disc brakes.