OG Radial Brake Caliper Spacers

Where style meets function, the OG Radial Brake Caliper Spacers deliver precise radial spacing for high-performance brake conversions. Designed specifically to integrate with the OG Radial Mount Brake Caliper Bracket, these spacers feature machined mating tabs that lock directly into the bracket for perfect alignment every time.

Eliminate the guesswork and stacking of loose washers or shims. These billet spacers provide exact spacing for consistent caliper positioning, improved braking performance, and a clean professional installation.

Machined from premium 6061-T6 aluminum and finished in your choice of eleven anodized colors or chrome, these spacers allow you to perfectly match your OG brake components while maintaining durability and corrosion resistance.

Available in multiple heights to support different brake configurations. Sold in pairs. For single disc applications, order one kit. For dual disc setups, order two kits.

Designed for performance builders who demand precision, reliability, and a flawless visual finish.

Features

• CNC machined from high-strength 6061-T6 aluminum
• Precision machined mating tabs lock into OG Radial Mount Brake Caliper Bracket
• Eliminates trial-and-error spacer stacking
• Available in all anodized colors and chrome finishes
• Multiple spacer heights available for different brake configurations
• Designed to fit Brembo M4, GP4-RX, and GP4-RS calipers
• Sold in pairs (2 spacers per kit)
• Single disc = 1 kit / Dual disc = 2 kits

Specifications

• Product Name: Radial Brake Caliper Spacers
• Material: 6061-T6 Billet Aluminum
• Finish: Anodized Colors or Chrome
• Mounting Design: Lock-in tab design for OG Radial Mount Bracket
• Compatibility: OG Front Radial Mount Brake Caliper Bracket
• Caliper Compatibility: Brembo M4, GP4-RX, GP4-RS radial calipers
• Units: Pair (2 spacers per kit)

Fitment

Designed to fit with OG Front Radial Mount Brake Caliper Bracket
Designed for use with Brembo M4, GP4-RX, and GP4-RS radial mount calipers
Single disc applications require 1 kit
Dual disc applications require 2 kits

2026 — Harley-Davidson — FLHX — Street Glide
2026 — Harley-Davidson — FLTRX — Road Glide
2026 — Harley-Davidson — FLHRXS — Road King Special
2026 — Harley-Davidson — FLHT — Electra Glide Standard
2026 — Harley-Davidson — FLHTK — Ultra Limited
2026 — Harley-Davidson — FLHTCU — Electra Glide Ultra Classic
2025 — Harley-Davidson — FLHX — Street Glide
2025 — Harley-Davidson — FLTRX — Road Glide
2025 — Harley-Davidson — FLHRXS — Road King Special
2025 — Harley-Davidson — FLHT — Electra Glide Standard
2025 — Harley-Davidson — FLHTK — Ultra Limited
2025 — Harley-Davidson — FLHTCU — Electra Glide Ultra Classic
2024 — Harley-Davidson — FLHX — Street Glide
2024 — Harley-Davidson — FLTRX — Road Glide
2024 — Harley-Davidson — FLHRXS — Road King Special
2024 — Harley-Davidson — FLHT — Electra Glide Standard
2024 — Harley-Davidson — FLHTK — Ultra Limited
2024 — Harley-Davidson — FLHTCU — Electra Glide Ultra Classic
2024 — Harley-Davidson — FLHXSE — CVO Street Glide (may need caliper adapters depending on wheel/rotor)

Fitment Notes

• 2024 and newer Touring models — many now sit on 320 mm Wave® front rotors, which makes 15 mm spacer setups required to position radial calipers correctly on these rotors.
• 13″ rotor applications, requiring 29 mm spacers, are common on 2008–2023 Bagger with traditional 13″ oversize rotor radial big brake kits from multiple aftermarket sources.
• CVO and other factory radial brake models with integrated radial brakes may need fitment assessment on a case-by-case basis for aftermarket calipers and spacers.