• M5 Seatpost Security Set – Replacement for quick release
  • M5 Seatpost Security Set – Replacement for quick release
  • M5 Seatpost Security Set – Replacement for quick release
  • M5 Seatpost Security Set – Replacement for quick release
  • M5 Seatpost Security Set – Replacement for quick release
  • M5 Seatpost Security Set – Replacement for quick release
  • M5 Seatpost Security Set – Replacement for quick release
  • M5 Seatpost Security Set – Replacement for quick release
  • M5 Seatpost Security Set – Replacement for quick release
  • M5 Seatpost Security Set – Replacement for quick release

M5 Seatpost Security Set – Replacement for quick release

M5 Seatpost Security Set – Replacement for quick release

€24.00
€24.00
Sale Sold out
incl. VAT plus shipping costs

M5 seatpost safety set – replacement for quick release– The solid replacement for conventional quick releases. With a high-quality M5 screw, this solution offers a reliable, theft-proof alternative to quick releases – ideal for anyone who wants to secure their saddle. Easy installation with three screw lengths.

Taxes included.
Hexlox Key - Anti-theft for any part of your bike
Hexlox Key

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Advantages of Hexlox
  • Free shipping from 39€
  • Delivery time: 1-3 working days
  • Made in Germany
  • Customer service from experts

Technical features

Material: Stainless steel
Screw type: M5 Allen key
Security feature: Compatible with Hexlox 4 mm insert
Weight: Light and stable – ideal for everyday use and tours

How it works

  1. Remove old quick release

  2. Install M5 bolt

  3. Place Hexlox Insert 4 mm into bolt socket for increased theft protection

Your existing seat clamp with quick release (QR) can be easily converted and secured with Hexlox

Simply remove the quick release (QR) and replace it with the M5 Seatpost Security Set. If you don't already have a Hexlox key, add one.

  • We supply 3 different screws (25, 30 and 35mm) to ensure it fits
  • Easy conversion of the seat clamp
  • Includes spring washer for a perfect fit
  • Fits existing saddle clamps
  • Maximum torque: 6Nm

Description

Quick releases are practical—but unfortunately, they're also a gateway for theft. Seatposts can be removed in seconds—a popular target for opportunistic thieves.

The M5 Seatpost Security Set replaces the classic quick release with a secure hex bolt connection . This secures your seatpost and makes it significantly more difficult to access.

Scope of delivery

  • 1 × Hexlox insert 4mm

  • We supply 3 different screws (25, 30 and 35mm) to ensure it fits on any setup

  • easy conversion of your seat clamp
  • including spring washer for a perfect fit
  • fits existing saddle clamps
  • Maximum tightening torque: 6 Nm

Frequently Asked Questions (FAQ)

Question: Why should I replace my quick release?
 Answer: Quick-release skewers are easy to open—perfect for thieves. A screw connection is significantly more secure, especially with Hexlox Insert installed.

Question: Is the Hexlox Insert included?
 Answer: Yes, the Hexlox Insert 4 mm is included

Question: How do I install the clamp ring?

Answer:Remove the quick release, tighten the screw with the Allen key, and you're done. Insert the Hexlox.

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Any bike. Any rider. Anytime.

The Hexlox system is simple and intuitive to use – no prior technical knowledge required. It works on any bike, whether it's a fixed-gear bike, road bike, e-bike, mountain bike, or cargo bike. Whether you're a passionate urban fixie rider, a daily commuter, or a relaxed weekender – Hexlox adapts to every riding style and every type of cyclist. Its versatility and ease of use make it a well-thought-out system for everyone. This keeps your bike safe, no matter who's riding or where you're going.

5/5 ★★★★★

WHAT OUR SATISFIED CUSTOMERS SAY

Discreet Looking and my bike is well protected:) The Hexlox works perfectly

CHRISTOPHER J.

Customer care and product at their very best. I have been using Hexlox products for many years. They always give me piece of mind. Over the years I always get the best customer support to advise me on the best solutions to keep my bike and gear safe. I thank them for my last purchase and for Saleem, for his customer service at its very best!

ANDREW V.

How'd have thought something so small can be so mighty! Extremely impressed :)

FXDLENS

+ innovative company ahead of it's time + really reliable + super fast + nice people + positive vibes = 5 stars

CICLIB.

Great products and amazing customer support!

FREDV C.

Minimalistic and clean looking! I can finally leave my bike locked outside without worrying about having my parts stolen. Thanks Hexlox!

LIISA F.

Really fast help from Saleem with an order where I needed Hexlox to identify the right part from a photo sent over. Then the order was set up for me and two clicks to pay-love it.

RICHARD L.

I had an emergency issue with my Hexlox axle and they provide me all the help, they are super friendly and helpful. Their service is amazing and I will always recommend Hexlox. Thanks a lot again for today. Best product for the bike 💪

KARSTEN B.

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