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Abus Steel-O-Flex 1000/100



Not bad for a cable lock, but much easier to break than an equivalent price U-lock

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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The Abus Steel-O-Flex is a beefy cable lock and as such it performs a lot better than others I've seen. It is a cable lock at the end of the day though, and that means that for all the armour and heft you're still better off buying a U-lock in my opinion; especially from Abus, who make some very good ones.

The Steel-O-Flex 1000/100 is certainly a burly looking beast with a 15mm cable protected by an armoured sleeve of cylindrical steel links. The locking unit uses the same cylinder you'll find on many of Abus' other locks including the Granit X-Plus U-lock that we rate very highly. The lock's finished with a vinyl sleeve and plastic lock housing to keep your bike scuff-free. The lock comes complete with two keys (one with an LED light) and a Sold Secure Gold rating.

As usual, I attacked the Steel-O-Flex with our standard thief's armoury – 30" croppers, a persuader of similar length, a hammer, a hacksaw, a cold chisel and a screwdriver. My first thought was that since the bolt croppers wouldn't fit over the 25mm armour around the cable I'd try to twist and pop it with the persuader, but it held fast and wouldn't snap. However, all that manipulation disrupted the armoured links around the cable and meant I could get the lock into the jaws of the croppers which had no trouble at all snipping the cable and ending the lock's resistance. Time elapsed: 3 minutes 7 seconds.

Okay, three minutes ain't bad for a cable lock but the Steel-O-Flex doesn't live up to its Sold Secure Gold rating and certainly didn't do anything to suggest it's a better option than a U-lock: there are better ways to spend your £70, many from Abus themselves.


Not bad performance for a cable lock, but much easier to break than an equivalent price U-lock test report

Make and model: Abus Steel-O-Flex 1000/100

Size tested: 100cm

Rate the product for quality of construction:
Rate the product for performance:
Rate the product for durability:
Rate the product for weight, if applicable:
Rate the product for value:

Did you enjoy using the product? It's fine, but the failure testing is the final word

Would you consider buying the product? no

Would you recommend the product to a friend? no

Overall rating: 5/10

About the tester

Age: 36  Height: 190cm  Weight: 98kg

I usually ride: Schwinn Moab, urbanised with 700cs  My best bike is: Trek 1.5 with upgrades

I've been riding for: 10-20 years  I ride: Every day  I would class myself as: Experienced

I regularly do the following types of riding: time trialling, commuting, sportives, general fitness riding, fixed/singlespeed, mtb, Mountain Bike Bog Snorkelling, track

Dave is a founding father of, having previously worked on Cycling Plus and What Mountain Bike magazines back in the day. He also writes about e-bikes for our sister publication ebiketips. He's won three mountain bike bog snorkelling World Championships, and races at the back of the third cats.

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