• 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
Special Offer Sold out
incl. VAT plus shipping costs

M5 Seatpost Security 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

Available

  • American Express
  • Apple Pay
  • Bancontact
  • EPS
  • Google Pay
  • iDEAL Wero
  • Klarna
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  • Mastercard
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  • Shop Pay
  • Union Pay
  • Visa
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 "wave" 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 "wave" washer for a perfect fit
  • fits existing saddle clamps
  • Maximum tightening torque: 6 Nm

FAQ's

Question: Why should I replace my quick release?
 Answer: Seatposts with quick-release 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

View full details

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.

Un service client et des produits exceptionnels. J'utilise les produits Hexlox depuis de nombreuses années. Ils me rassurent toujours. Au fil des ans, j'ai toujours bénéficié d'un excellent service client, avec des conseils avisés pour protéger au mieux mon vélo et mon équipement. Je les remercie pour mon dernier achat et tout particulièrement Saleem pour son service client irréprochable !

ANDRÉ V.

Qui aurait cru qu'une chose si petite puisse être si puissante ! Extrêmement impressionné(e) :)

FXDLENS

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

CICLIB.

Des produits exceptionnels et un service client incroyable !

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.

Saleem m'a apporté une aide précieuse et très rapide pour une commande. J'avais besoin qu'Hexlox identifie la pièce adéquate à partir d'une photo que je lui avais envoyée. Ensuite, ma commande a été préparée et j'ai pu payer en deux clics : génial !

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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