This Specialized-Selle-Pinarello Mount Kit (ST-CF) is attached to the OEM threaded inserts in the bottom of Blendr™, Selle Italia, and Pinarello equipped saddles (see below). The mount positioning provides optimal radar operation and visibility while also providing easy leg over clearance and room for saddle bags.
These kits use our latest Shark Tooth - Carbon Fiber (ST-CF) interface and are made from a carbon fiber reinforced polymer. The kit has a silky black-grey appearance and uses our latest ST-CF connector that will not allow the device to slip or rotate while riding. Our mount kits can accommodate Garmin Varia, Bryton R300L, Magene L508, and Wahoo TRACKRradar radars.
ST-CF kits are made from engineering-grade carbon fiber–reinforced polymer known for its exceptional toughness, impact resistance, and high UV resistance. This material is the most durable polymer available today and is safe to use with standard, carbon fiber, and printed saddles.
Compatible with ST-CF accessories only.
| Compatibility | Features |
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Saddle Compatibility
Selle SMP saddles and Prologo saddles are NOT compatible with this kit.
To check if your saddle has the required accessory option, look on the bottom of the saddle for two threaded holes as shown in the picture. They should be 60 mm apart and may be covered with a rubber or plastic plate or plugs that should be easy to remove. Specialized, Selle Italia, and Pinarello saddles will vary and may not look exactly the same as the picture. If the threaded holes are there and 60 mm apart (about 2-3/8"), this direct mount will work with your saddle. If not, look at the universal clamp on options instead.

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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. |
BUP Shark Tooth Carbon Fiber (ST-CF)
What makes the Shark Tooth design different?
- ST Mounts use toothed connections to prevent slipping.
- Connections are very rugged and more than 3x thicker than GoPro type connections.
- Very easy to assemble using the provided thread locking screws.
- Eliminates the variations in GoPro like slot fitments for a more secure connection.
|---- Space ----|
- Our mounts move the device down and rearward to increase spacing.
- BUP mounts angles downward for more leg over clearance.
- Leaves plenty of room for most small or medium bags.
- Optional extensions can provide more space when needed.
Safety is not an afterthought
- Safety band prevents twist out release from impacts, aggressive riding, opportunistic theft, and accidents.
- Safety bands will not interfere with, or mute, radar range or operation.
- Elastic safety tethers are thin and exactly the same as the Garmin OEM computer tether.
- Heavy duty safety tethers are provided for heavier devices such as Garmin Varia RCT715.
Shark Tooth Grip
BUP designed the Shark tooth connector to eliminate device rotation. Standard action camera connectors (i.e., GoPro) typically suffer from unwanted rotation which requires overtightening the screw to overcome the rotation and that doesn't always work anyway.
ST-CF mounts use a thread locking screw that sandwiches the connector together. Easier to assemble and no way it will rotate. Just tighten normally and it is locked in place. Easy peasy.
Garmin
Compatibility
Besides being able to use all major brands of radars, our ST mount arms can be converted from one brand's radar to another. Switching between Garmin Varia and Magene require nothing more than unscrewing the insert rotating it 90 degrees. Conversion from Garmin or Magene to Bryton or Wahoo (or vice versa) is just as easy by swapping one insert for another.
Wahoo
Quality
Our mounts bases and arms are 3D printed with state-of the-art engineering grade materials using the latest manufacturing technologies. Small injection molded items, such as the quarter-turn inserts, are top-of-the-line and as good or better than the OEM part. We only use marine grade stainless steel hardware as well!
Image: Cutaway of Bup quarter-turn insert on the left compared to the common import mount variety on the right.
Product Categories
What are these products made out of?
Our mounts are made from either bio-plastic (ST) or an engineering grade polymer (Eco). ST-CF kits are made with carbon fiber reinforced polymers.
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, Canada, United Kingdom, and Australia. Please see the international shipping page for up-to-date shipping locations and more details.
All BUP mounts are manufactured and hand assembled in the USA
Patent # US D902,014 S, D893,285 S
The Garmin Varia, Bryton radar, Magene radar, 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.
This product is not affiliated with, endorsed by or in any way associated with Magene Inc. or its products and services. Magene and their respective logos are trademarks or registered trademarks of Magene, Inc.
This product is not affiliated with, endorsed by or in any way associated with Bryton Inc. or its products and services. Bryton and their respective logos are trademarks or registered trademarks of Bryton, Inc.