Description:
A new addition! The same under flush bolt design as our original under flush, but with the following changes:
- A smaller head diameter of 5.0mm to increase compatibility across more frames.
- A shorter head height of 1.5mm to nestle into a select number of bidon mounts in circulation.
This under flush bolt utilises a 2.5mm Hex.
Product Summary:
- Prototipo Works M5 316 Stainless Steel Underflush Bidon Cage Boss Blank.
- 2.5mm Hex, M5 Metric thread. Excellent finishing touch to all builds.
- Used to neatly and professionally blank bidon cage bosses when not in use
- Designed to visually disappear under flush in most bidon bosses.
- Designed and engineered in Melbourne, Australia.
Designed and engineered in Melbourne, Australia.
Specifications:
| Features | Narrow head allows it to disappear in most bidon mounts |
| Taper Tech thread base for easy installation | |
| Precision CNC machined from 316 Stainless Steel | |
| Precision laser etched Prototipo Works logo | |
| Sold as pair | |
| Finish | Natural CNC machined finished. |
Installation:
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Prototipo Works strongly recommends the use of a lithium based anti seize assembly lubricant during the installation of our hardware. An anti seize assembly lubricant helps prevent seizing, galling, cold-welding, and the fusing of metal on metal threaded components. Ideal for salty environments, humid environments, in the presence of water, moisture, sweat and ingress.
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Please ensure all mating threads and installation tools are the correct size, are clean, free of damaging burrs and inserted straight.
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Bidon cage boss hole opening diameter must be at least 5.1mm or greater (our under flush bolt is 5mm in diameter) with at least a 3mm unthreaded depth before the thread begins into the frame.
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Where appropriate, we also offer a suitable version for a 5.6mm opening hole diameter or greater (our alternate under flush bolt is 5.5mm in diameter).
- If unsure if it will fit correctly on you bicycle, please contact us.
Disclaimer:
- Warning! Choking Hazard, Small Parts.
- These special unique underflush bolts are for blanking purposes only! Not designed to take loads.
- Product appearance may vary slightly.
- Use at your own risk!
Special Notes:
- Will visually disappear under flush on a majority of mass produced major OEM produced bicycles (see assembly notes above).
- May not visually disappear under flush or install correctly on bespoke, low volume custom bicycles