Seat Post Mount – Garmin Varia & Radar Light

Secure your radar tail light with a more stable alternative to elastic-band mounts.

This clamp-style seatpost radar mount is designed to keep compatible Garmin Varia and Magene radar units firmly aligned on the bike, helping reduce twisting, vibration and movement on rough roads or trails.

Key Features

Multi-Size Seatpost Compatibility

The included adapter shims allow fitment to several common round seatpost diameters, including:

• 27.2mm

• 30.8–30.9mm

• 31.6–31.8mm

Garmin-Style Quarter-Turn Interface

The mount uses a 90° Garmin-style quarter-turn interface for quick and secure attachment of compatible radar lights.

Compatible Radar Lights

Suitable for selected models including:

• Garmin Varia RTL510

• Garmin Varia RTL515

• Garmin Varia RTL516

• Garmin Varia RVR315

• Magene L508

• Other compatible quarter-turn radar lights

Secure Clamp Design

The mount tightens around the seatpost using an Allen-key bolt, providing a more rigid connection than standard rubber-band style mounts.

This helps reduce:

• Rotation

• Slipping

• Vibration

• Radar misalignment

Stable Radar Positioning

Keeping the radar light properly aligned behind the bicycle helps maintain a clean rear-facing position for supported radar and lighting functions.

Lightweight Composite Construction

Made from durable composite polymer for a lightweight setup without unnecessary bulk.

Specifications

Product Type: Radar Tail Light Seatpost Mount
Material: High-Strength Composite Polymer
Mounting Mechanism: Screw-Tightened Clamp
Interface: Garmin-Style 90° Quarter-Turn
Supported Seatpost Sizes: 27.2mm / 30.8–30.9mm / 31.6–31.8mm
Mounting Position: Seatpost
Compatible Devices: Garmin Varia / Magene L508 / Compatible Quarter-Turn Radar Lights
Condition: Brand New

What's Included

• 1 × Seatpost Clamp Radar Mount

• 2 × Adapter Shims

• 1 × Allen / Hex Key

Ideal For

• Road bikes

• MTB

• Gravel bikes

• Commuting

• Garmin Varia users

• Magene radar users

• Riders wanting a more secure alternative to elastic mounts

Compatibility Assistance

Not sure whether this mount will fit your seatpost or radar light?

Send BicyclePartsZA your seatpost diameter and radar model, and we’ll help check compatibility before you order.

WhatsApp: 064 513 0821

🇿🇦 BicyclePartsZA – South African Cycling Parts Specialist
If you can’t find it, we’ll help find it.