GARMIN AND MAGENE ARMS MUST BE PURCHASED SEPARATELY!
(see compatible options)
NOTE: No mount arm is needed for GoPro, similarly attached devices, or the Garmin eRTL615, but a safety tether is recommended.
This is our newest 2nd Generation direct mount option for Specialized Stealth Pro saddles. Our mount is attached to the Shimano saddles with threaded inserts in the bottom rear of the saddle (see pictures). It is designed to securely position a Garmin Varia, Magene radar, or camera for optimal visibility and operation.
Made in USA
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INTENDED USE
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This mount is intended for use with bicycles used on paved or relatively smooth unpaved surfaces. Our mounts can be used with electric bikes up to class 3. ASTM International standard F2043-13. |
2nd Generation Improvements
Based on user feedback, and when combined with the TC mount arm, the mount point has been moved back towards the saddle and lowered by 25 mm (1 in). This increases the leg over clearance and makes it less likely to catch the mount when mounting and dismounting the bike. | ![]() |
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Based on community feedback, we replaced the mounting screws with Nyloc screws with a built in threadlocker. We also replaced the neck nut with a locknut. All screws are now heavier cap head screws making them much harder to strip and easier to tighten. These changes eliminate the need for messy threadlockers while preventing screw loosening. |
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The TC Garmin arm or Magene arm paired with the Shimano mount base moves the center of gravity below the rotational point. This means the Varia applies less torque on the quarter-turn insert and will be less likely to rotate under heavy impacts. | ![]() |
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Saddle Compatibility

All BUP mounts are manufactured and hand assembled in the USA
Patent # US D902,014 S, D893,285 S
The Garmin Varia, GoPro, saddle bag, and saddle are shown for illustrative purposes only and are not included.
This product is not affiliated with, endorsed by or in any way associated with GoPro Inc. or its products and services. GoPro, HERO and their respective logos are trademarks or registered trademarks of GoPro, Inc..
This product is not affiliated with, endorsed by or in any way associated with Garmin Inc. or its products and services. Garmin, Varia and their respective logos are trademarks or registered trademarks of Garmin, Inc.
Which mount will fit my (insert your saddle or bike rack name here)
Please see our mount configuration helper, the mount base comparison page, and the mount arm comparison page to determine the correct options for your setup.
I have a (insert device name) what do I need?
Please see our mount configuration helper, the mount base comparison page, and the mount arm comparison page to determine the correct options for your setup.
What are these products made out of?
Our mounts are made from a new state-of-the-art material called bio-plastic that is derived from plants instead of petroleum. It is stronger than traditional plastic and able to withstand repeated impacts better. Some components are made from injection molded plastic or steel.
Where are your products made?
We source all raw materials, manufacture the primary components, assemble, and package the products in the United States. Some accessory items or minor components are imported (noted in the product details).
Do you ship to my country?
We currently ship within the U.S., most U.S. territories, and Canada. Please see the international shipping page for more details.