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RoundLock Padlock

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RoundLock Padlock

Discounts Apply !
  •    Info
  •    Tech
  •    Video
  •     Reviews

Our custom-made SecurityForBikes RL21 RoundLock super-compact padlock. Sold Secure Motorcycle Gold/Quad & ATV Gold/Bicycle Gold/Motor Scooter Gold approved with any appropriately-approved chain and also on its own (e.g. as a disc lock).

The RoundLock is lighter and a lot more compact than the Squire SS65CS whilst offering similar security at a much cheaper price. Note that this is a 2-part lock where the top section comes out completely and is then re-inserted sideways through the chain and into the female lock receiver. It may be slightly harder to use than the SS65CS as a result (although you typically need 2 hands to fit that lock to a chain as well).

Disc detainer anti-pick cylinder with 9 discs, protected by rotating anti-drill hardened alloy steel plate.

3 keys supplied.

Keyed-alike available at initial order only (not available retrospectively) when ordering more than one lock together, and only amongst other RL21 locks and/or DIB-Series D-Locks. These locks can't be keyed-alike with any of the Squire locks. Please note that the Keyed Alike option must be selected for *all* locks in the set that you wish to be Keyed Alike.

Very compact and a perfect partner for Protector 16mm chains at a great price! 

Not suitable for our 19mm chain unless the optional extra RL21A socket is also purchased and that is used in place of the standard RL21 socket. The RL21A socket is available separately to adapt this lock to fit our Protector 19mm chains - Please Click for the RL21A Socket product listing.

The RL21 can sometimes be used with our Protector 13mm chains - it's a close fit and the manufacturing tolerance on the chains can make-or-break the idea of the combination. Check to see if we have the corresponding Package Deal available - if it shows as available to order then we have a batch of chain that fits the RoundLock!

This lock can also sometimes be used as a motorcycle disc lock - Check that you have a suitable opening that will take the 21mm diameter shackle in your brake disc or disc carrier and that there is clearance behind the disc for the lock to sit. Sometimes spokes or the wheel hub are too close for the lock to fit in the gap. When it fits your disc, you can then use this with a chain when at home and as a disc lock when out and about.

The RoundLock is generally not suitable for 11mm (or, sometimes, 13mm) chains nor for use with hasps, padbars, etc.

The lock body is 40mm diameter and in the locked position it measures approximately 77mm long overall. That excludes the the plastic cap at approximately 6mm thick.

21mm diameter shackle.

Weight: 0.55kg

Click for more technical information on the RoundLock.

Below is a short video overview of the SFB RoundLock, showing how it can be used with our Protector 16mm and 13mm chains and, with the optional RL21A socket, with the 19mm chains:

81 Product Reviews - Average rating 4.9 / 5 (Click here to expand and to show more reviews)
Love it!
- 09/05/2022
Ordered a Roundlock along with a 19mm chain, a Double Doofer, and a Torc Maxi Ground Anchor.... love the simplicity and the ability to use it as a straightforward disc lock.


Excellent!
Roundlock
- 28/04/2022
Good communication and quick delivery. Decent lock, small Enough for jacket pocket and seems to be quality item. Only used a disc lock so far. Recommend over rubbish Oxford locks for sure.
Excellent lock.
- 01/04/2022
Have waited a few months to review this great lock. It's been used so far as a disc lock on a covered bike outside. It's showing no signs of degradation after a tough winter only 200m from the sea. The keyway is still slick to use and you'd need Lockpickiread more
Excellent quality
- 28/02/2022
Really impressed with this lock. Appears to be very well made & secure whilst being small enough to keep under the seat.
Round lock Padlock
- 02/02/2022
Excellent fast efficient service, solid product, bought as present for son in law. No hesitation in recommending.
Price (inc VAT): £44.95

 

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