Prototipo Works

Prototipo Works – Ultra Low Profile Porter Bolts (Charcoal)



Made in Australia

Introducing a variant of our Ultra Low Profile Bidon Bolt, our new Ultra Low Porter.

Our Ultra Low Porter Bolt is designed for applications where a little more thread is needed. A common example is when mounting two or more accessories like a frame pump holder and a bidon cage on the same pair of bidon / accessory mounts.

Works best with open style bidon / accessory mounts (look for a hole straight through at the bottom bidon / accessory mounts).

Designed, engineered and proudly made in Melbourne, Australia.

Product Summary:

  • Prototipo Works M5 316 Stainless Steel Ultra Low Porter Bolt
  • 3mm M5 Metric thread.
  • Excellent finishing touch to all builds.
  • Can be installed on their own with or without a bidon cage pending your bidon boss / accessory mounts are open and not blind.
  • Ultra Low profile head design provides a clean, snag free finishing touch.
  • Strong cold formed rolled thread.


Features Extra thread length compared to our Low, Ultra Low and Original Bidon Cage Bolts
Taper Tech thread base for easy hole finding installation
Precision CNC machine from 316 Stainless Steel
Diamond burnished head (prior to laser etching and PVD coating).
Precision laser etched Prototipo Works logo.
Titanium PVD coated head for extra strength and abrasion resistance
Strong cold forged rolled thread
Sold as pair
Diamond burnished head, high lustre.
Charcoal, Titanium PVD coated bolt head for added hardness and abrasion resistance.


  • If installing on their own without a bidon cage / accessory please double check that your bidon cage / accessory mounts are open (hole at the bottom) before ordering.
  • 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.

  • Maximum Torque 3-5Nm. DO NOT OVERTIGHTEN.

  • If unsure if it will fit correctly on your bicycle, please contact us.


  • Warning! Choking Hazard, Small Parts.
  • These special purpose bolts are for light load duties only.
  • Product appearance may vary slightly.
  • Use at your own risk!

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