RAM Pin-Lock Security Knob B-Size (RAP-S-KNOB3U)

8 reviews
Size Guide


  • 1 x RAM Pin-Lock Security Knob B-Size (RAP-S-KNOB3U)

The RAP-S-KNOB3U features of a 1/4"-20 female threaded security knob and key knob. The RAP-S-KNOB3U replaces all knobs on 1" diameter B size arms and mounts. The RAP-S-KNOB3U offers the ideal amount of leverage to properly tighten your mount to prevent slippage in heavy chop or in extreme vibration environments. 

With an emphasis on aesthetics and function, the RAP-S-KNOB3U is low in profile and only adds a small amount of additional bulk to your system when compared to the standard knob included. At a fraction of the cost of currently available keyed locking knobs, the additional peace of mind and tamper resistance comes at a very affordable price. The RAP-S-KNOB3U is the perfect accessory for keeping your mounted electronic device safe from theft and tampering.

  • Material: Powder Coated Marine Grade Aluminium
  • Ball Size: 1" Rubber Ball "B" Size

Note: The "U" in the part number reflects product packaged in poly bag.

Customer Reviews
5.0 Based on 8 Reviews
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
    Roger R.
    Australia Australia
    Ripper of a product

    Easy to install and the "key" part fits in any pocket without being bulky. Mounts can now be left securely on the bike instead of taking up valuable pocket space. Wish i bought these years ago.

    Javier M.
    Australia Australia
    Great product and service from modest mounts

    Perfect. I can leave my mount on the bike without a worry and the service from modest mounts was exceptional!! Highly recommend

    Gary B.
    Australia Australia
    Best motorbike mount I've seen

    I've bought two of these centre post motorbike mounts and both are perfect. The only bad thing about them is the instructions for how to install them don't work. I found it best to tighten the Allen key bolt as much as possible to just allow the mount to be pushed into the home on the centre post and then use the supplied super glue to glue the mount to the post. It's not ideal and would make it hard to remove but it does work.

    David B.
    Australia Australia
    Pin lock knob

    The buying experience was great. The knob itself is a lot bulkier than it looked in pics. It the other type smaller

    Damien L.
    Australia Australia
    Security knobs

    The Security knobs are great quality and help give a piece of mind when I park my motorcycle. I use Ram mounts for my phone, spotlights and mirrors so having these in are a no-brainer. Great product.