EBC 5-Button Floating Stainless 11.8" Rear Rotor for 2008-2026 Harley Touring

Product Description

EBC 11.8" Floating Rear Brake Rotor for Harley-Davidson Touring

Upgrade the rear braking system on your Harley-Davidson Touring bike with the EBC MD521 Floating Rear Brake Rotor. Designed for compatible 2008-Up Harley-Davidson Touring applications, the MD521 combines a stainless steel braking surface, heavy-duty 10-button floating construction and polished center carrier for dependable braking performance and a premium appearance.

The fully floating design allows the outer braking ring to move independently of the center carrier as brake temperatures change. This controlled movement helps accommodate thermal expansion, maintain consistent brake pad contact and reduce stress on the rotor during repeated braking and heat cycles.

The MD521 features an 11.8" / 300mm outside diameter and heavy-duty 7mm braking surface designed specifically for rear brake applications. Ten floating buttons connect the braking ring to the center carrier while providing the controlled movement required from a premium floating rotor.

A polished center carrier gives the MD521 a clean OEM-plus appearance that works equally well on stock Touring motorcycles, performance baggers and custom builds. It is an excellent choice when replacing a worn factory rear rotor or upgrading to a premium floating brake disc.

Fitment

Fits select 2008-2026 Harley-Davidson Touring models equipped with the compatible 300mm rear brake rotor and 56.4mm center bore.

Road Glide: Fits select Road Glide, Road Glide Custom, Road Glide Ultra, Road Glide Special, Road Glide ST, Road Glide Limited and CVO Road Glide applications within the compatible year range.

Street Glide: Fits select Street Glide, Street Glide Special, Street Glide ST and CVO Street Glide applications within the compatible year range.

Road King: Fits select Road King, Road King Classic, Road King Special and CVO Road King applications.

Electra Glide: Fits select Electra Glide Standard, Electra Glide Classic, Ultra Classic, Ultra Limited, Ultra Limited Low, Highway King and related Touring applications.

CVO: Fits numerous compatible CVO Touring applications including select CVO Road Glide, Street Glide and Limited models.

2026 Applications: Fits select updated 2026 Touring and Trike applications using the compatible rear rotor configuration.

Note: Harley-Davidson used different rear rotor configurations across certain Touring and Trike models. Verify your motorcycle uses a 300mm rear rotor with a 56.4mm center bore and compatible mounting configuration before ordering.

Specifications

• Position: Rear
• Rotor Type: Fully Floating
• Rotor Style: Round / Plain
• Rotor Diameter: 11.8" / 300mm
• Rotor Thickness: .275" / 7mm
• Center Bore: 2.22" / 56.4mm
• Floating Buttons: 10
• Carrier Finish: Polished
• Mounting Holes: Counterbored

Features

• Premium floating rear brake rotor for compatible Harley-Davidson Touring models
• 11.8" / 300mm outside diameter
• Heavy-duty 10-button floating construction
• 7mm-thick rear braking surface
• Floating design accommodates thermal expansion during braking
• Helps maintain consistent brake pad contact through repeated heat cycles
• Stainless steel braking surface for durability and corrosion resistance
• Polished center carrier provides a clean custom appearance
• 56.4mm / 2.22" center bore
• Counterbored mounting holes
• Compatible with EBC FA409-series brake pads where applicable
• Excellent replacement or floating-rotor upgrade for stock and performance bagger builds
• Rear brake application
• Sold individually
• EBC Part Number: MD521