OG 13" Complete Radial Big Brake Kit for Harley-Davidson - Hub Mount - Black with Black Brembo M4
OG 13" Complete Radial Big Brake Kit for 18+ Softail & Dyna - Dual Disc-2
Black Brembo 108mm M4 Monobloc Caliper with Aluminum 29mm Spacers and Black Radial Bracket
Black Brembo 108mm M4 Monobloc Caliper with Chrome 29mm Spacers and Black Radial Bracket
Black Brembo 108mm M4 Monobloc Caliper with Gold 29mm Spacers and Black Radial Bracket
Black Brembo 108mm M4 Monobloc Caliper with Red 29mm Spacers and Black Radial Bracket
Black Brembo 108mm M4 Monobloc Caliper with Blue 29mm Spacers and Black Radial Bracket
Black Brembo 108mm M4 Monobloc Caliper with Purple 29mm Spacers and Black Radial Bracket
Black Brembo 108mm M4 Monobloc Caliper with Orange 29mm Spacers and Black Radial Bracket
Black Brembo 108mm M4 Monobloc Caliper with Black Chrome 29mm Spacers and Black Radial Bracket
Black Brembo 108mm M4 Monobloc Caliper with Gold Plating 29mm Spacers and Black Radial Bracket
Black Brembo 108mm M4 Monobloc Caliper with Bronze 29mm Spacers and Black Radial Bracket
Titanium Gray Brembo 108mm M4 Monobloc Caliper with Black 29mm Spacers and Black Radial Bracket

OG 13" Complete Radial Big Brake Kit for 18+ Softail & Dyna - Dual Disc

Original Garage Moto SKU: P-BR-23-BK-BK-BK

$2,149.95

IN STOCK

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Road Tested
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Product Details

Description Fitment

Original Garage Moto — OG 13" Complete Radial Big Brake Kit for M8 Softail & Dyna (Single or Dual Disc)

The OG 13" Complete Radial Big Brake Kit from Original Garage Moto is a complete high-performance braking upgrade for M8 Softail and Dyna builds. Designed for use with stock lowers on conventional and inverted front ends, this kit is available in single- or dual-disc configurations and includes premium components chosen for precision, consistent performance and fade resistance.

Fits most 2018 to present M8 Softail models with hub-mounted rotors (including 2022 to present FXLRS & FXLRST models). Also fits most 2000–2017 Harley-Davidson Dyna models with hub-mounted front rotor(s).

Key features
  • Galfer 13" oversize floating wave rotor(s) included
  • Brembo M4 Monobloc radial calipers included — precision radial caliper design for optimal force distribution and fade resistance
  • CNC-machined 6061-T6 aluminum radial bracket (available in multiple finishes)
  • Customizable radial billet spacer colors
  • ARP hardware included
  • Compatible with ABS
What to know before you install
  • Brake line replacement is required. Required length depends on routing, front-end setup and ride height — see installation instructions for part number recommendations.
  • For optimal performance we recommend using a Brembo Radial RCS master cylinder for 1" handlebars:
    • 19 RCS recommended for dual-disc setups
    • 15 RCS recommended for single-disc setups
  • Designed for use with stock lowers on conventional and inverted front ends.

Installation instructions (PDF): Download OG 13" Complete Radial Big Brake Kit installation instructions (PDF)

If you have questions about fitment or installation, contact Original Garage Moto.

  • Fits most 2018 to present M8 Softail models with hub-mounted rotors, including 2022 to present FXLRS & FXLRST models
  • Fits most 2000–2017 Harley-Davidson Dyna models with hub-mounted front rotor(s)
⚠️ California Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Learn more .