RAM 5 Pin-Lock Security Knob B-Size (RAP-S-KNOB3-5U)

5 reviews
Size Guide


  • 1 x RAM 5 Pin-Lock Security Knob B-Size (RAP-S-KNOB3-5U)

The RAP-S-KNOB3-5U features of a 1/4"-20 female threaded security knob and key knob. The RAM 5 Pin-Lock Security Knob B-Size replaces all knobs on 1" diameter B size arms and mounts. This product offers the perfect amount of leverage to tighten your mount correctly and prevent slippage in rugged applications and extreme vibration environments. 

With an emphasis on aesthetics and function, the RAP-S-KNOB3-5U 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-KNOB3-5U is the number one accessory for keeping B-Size equipment safe and your mounted electronic device protected from theft and tampering.

  • Material: Powder Coated Marine Grade Aluminium
  • Ball Size: 1" Rubber Ball "B" Size
  • Convenient. Keys included with the purchase of a RAP-S-KNOB3-5U are compatible with all RAP-S-KNOB3-5U knobs (ie. if you purchased two of this product, you could rely on one of the keys to unlock both locks.

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

Customer Reviews
5.0 Based on 5 Reviews
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Filter Reviews:
    Jeff B.
    Australia Australia
    Very Happy

    Great piece of hardware. Works great. Many thanks.

    Yuval B.
    Australia Australia
    Piece of Mind

    Feeling confident that the ram mount will still be there when I come back to the bike after a day at work

    John C.
    Australia Australia
    Very happy

    Very easy to use. I can park my bike and leave the mount in-place now with no fear of it being stolen.

    Ian S.
    Australia Australia
    Great Added Security

    Easy to swap over from the original RAM thumb nut to the new security knob. It does not add a huge amount of bulk but be aware that you have to leave sufficient clearance to use the key which has a reasonable girth (63mm including securing loop). Once fitted, you have just made your valuable RAM mounts harder to steal. I have 4 security knobs fitted to my BMW R1200GS Adventure and feel confident that all my RAM mounts will still be there when I return to the bike. Obviously, don’t leave your gadgets unattended as they can still be stolen. Well worth the investment and way cheaper than replacing stolen mounts.

    Andrew S.
    Australia Australia
    Pin Lock Security Knob

    I originally ordered a couple of Pin Lock Knobs for my motorcycle mirrors. I didn’t realise they would have different lock configurations. When I raised the issue with Max from Modest Mounts he advised how I could order Pin Lock Knobs all keyed the same. The return process for the original knobs was easy and the new Pin Lock Knobs - keyed alike- arrived super fast!