Mount Arm Comparison

The mount arm options connect various devices to our mounts. Each mount arm is designed with a different goal in mind. Some may allow for greater saddlebag clearance, while others are designed to tuck up under the saddle more closely. Others may afford the clearance needed for a bike rack that is close to the tire. Use our Mount Configuration Helper to ensure a compatible combination of mount and mount arm for your setup.

PLEASE NOTE: GoPro cameras and Garmin eRTL615 do NOT require a mount arm, but may benefit from a safety tether kit.

Need help choosing?

Find the compatible mount and mount arm for your device and setup

Top-Center (TC) Mount Arm for Garmin
This style places the center of gravity below the attachment point. For Garmin radars with quarter-turn connectors: Models: RVR315, RTL500, RTL510, RTL515 only. The radar will be positioned ~6mm (0.25 in) from the mount screw. Pros: Resists rotation from impacts and jolts, more leg over clearance. Cons: Leaves less room for saddlebags.

Shown with Garmin RTL510/515	Shown with Garmin RVR315

Standard Extended (SE) Mount Arm for Garmin
Standard vertical orientation with extended positioning from the attachment point. For Garmin radars with quarter-turn connectors: Models: RVR315, RTL500, RTL510, RTL515 only. The radar will be positioned ~19mm (0.75 in) from the mount screw. Pros: Leaves more room for saddlebags. Cons: Less resistant to rotation from impacts and jolts, less leg over clearance.

Shown with Garmin RTL510/515	Shown with Garmin RVR315

Shown with Garmin RTL500

Sideway Layout (SL) Mount Arm for Garmin RVR315 Only
Sideway layout orientation with extended positioning from the attachment point. For Garmin model RVR315 radars only. The radar will be positioned ~19mm (0.75 in) from the mount screw. Pros: Leaves the most room for saddlebags and is resistant to rotation. Cons: Leaves less leg over clearance.

Shown with Garmin RVR315

Sideway Layout (SL) Mount Arm for Garmin RTL510 and RTL515 Only
Sideway layout orientation with extended positioning from the attachment point. For Garmin model RTL510 or RTL515 radars only. The radar will be positioned ~19mm (0.75 in) from the mount screw. Pros: Leaves the most room for saddlebags and is resistant to rotation. Cons: Leaves less leg over clearance.

Shown with Garmin RTL515

Top-Center (TC) Mount Arm for Garmin RCT715 Only
This mount arm utilizes the patented Garmin OEM seat post mount connector as the basis for connecting the RCT715 to our mount bases. This mount arm requires the OEM seat post mount. The mount arm is design to place the center of gravity below the attachment point and help prevent the RCT715 from rotating while under load. For Garmin radar model RCT715 only. From inline with the mount base screw, the radar mount arm occupies approximately 3.5 cm (1.375 in) behind the radar. Pros: Resists rotation from impacts and jolts, more leg over clearance. Uses the OEM connector (prevents accidental release). Cons: Leaves less room for saddlebags.

Shown with Garmin RCT715

Top-Center (TC) Mount Arm for Magene
This style places the center of gravity below the attachment point. For Magene radar model L508 only. The radar will be positioned ~6mm (0.25 in) from the mount screw. Pros: Resists rotation from impacts and jolts, more leg over clearance. Cons: Leaves less room for saddlebags.

Shown with Magene L508

Safety Tether Kit for GoPro or Garmin eRTL615 Only
While not technically a mount arm, this kit is intended for GoPro, Garmin eRTL615, or other devices with the 2-tab friction fit. All our mount bases are directly compatible with anything that can connect to a typical GoPro style connector.

Shown with GoPro using a Safety Tether kit