• Prototipo Works Under Flush M5 Bidon Cage Boss Bolt - Silver


Prototipo Works Under Flush M5 Bidon Cage Boss Bolt - Silver


SUPPLIER WAREHOUSE (add 3-6 days delivery): IN STOCK

Prototipo Works M5 316 Stainless Steel Underflush Bidon Cage Boss Blank.

3mm 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.


  • Narrow head allows it to disappear in most bidon mounts**.

  • Taper Tech thread base for easy hole finding installation.

  • Precision CNC machined from 316 Stainless Steel.

  • Precision laser etched Prototipo Works logo.

  • Sold as a pair (x2).


  • Natural CNC machined finish.

Assembly / Installation:

  • 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.

  • Please ensure all mating threads and installation tools are the correct size, are clean, free of damaging burrs and inserted straight.