Rank #8 in Best Bike Locks 2026: 10 Ranked, Diamond Beats Gold on Price
Sportneer 18 mm U-Lock with 6 ft Cable and Bracket
Price and rating as shown on Amazon when we collected them. Both change.
The Sportneer ALU-01 is a U-lock sold with a 6 ft steel cable and an adjustable mounting bracket, listed at £16.31 with 4.5 stars from 291 ratings and third place in Amazon's Cycling U-Locks category. It takes the number eight slot in this guide, and on the figures given in the listings it is the cheapest pick here to claim an 18 mm shackle — the £18.03 Kryptonite Combo quotes 12 mm.
The awkward part of this fiche is not the steel but the paperwork. There is no Sold Secure grade anywhere in the listing; the security case rests on one number, hydraulic shear forces of up to 12 tons. The lock is also three different sizes depending on which line you read: 9.5 x 4 in in the title, 11.5 x 6.25 in in the first bullet, and 30.5 x 17 x 7.5 cm in the specification field. The piece count disagrees with itself as well — 3 pieces, 1 item, 1.0 count. Everything on this page is taken from the Amazon listing; we have not cut, weighed or attacked this lock.
How those 291 ratings break down
An average hides its own shape. This is the spread behind the 4.5 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £16.31 |
|---|---|
| Rating | 4.5 out of 5, from 291 ratings |
| Claimed shackle thickness | 18 mm (0.71 in) |
| Lock size, title | 9.5 x 4 in |
| Lock size, first bullet | 11.5 x 6.25 in |
| Item dimensions, spec field | 30.5 x 17 x 7.5 cm (as listed) |
| Piece count (as listed) | 3 pieces, 1 item, 1.0 count |
| Best Sellers Rank | 3rd in Cycling U-Locks |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“For what this cost you'd think it was a higher end lock it's great and does everything I need it too, I've not had anyone try and get it off yet but I'm guessing it isn't going to be easy”
Verified purchase“Feels sturdy and my bike hasn't been nicked...yet.”
What it is up against
The rivals it was ranked against in Best Bike Locks 2026: 10 Ranked, Diamond Beats Gold on Price.
Questions people ask
Does the Sportneer ALU-01 have a Sold Secure rating?
The listing makes no Sold Secure claim for the Sportneer ALU-01. Its security argument is the lock core: a zinc alloy core and alloy steel lock head, described as withstanding hydraulic shear forces up to 12 tons.
What size is the Sportneer ALU-01?
The listing gives three sizes. The title says 9.5 x 4 in, the first bullet says 11.5 x 6.25 in, and the specification field says 30.5 x 17 x 7.5 cm. The bullet and the specification figure are closer to each other than either is to the title.
How many keys come with the Sportneer ALU-01?
Two. The fourth bullet says the lock comes with two keys, and the Included Components field lists 2 keys, a 6 ft steel cable and an adjustable mounting bracket.
What does the cable and bracket do?
The second bullet says the 6 ft steel cable and bracket let the Sportneer ALU-01 secure wheels, frames or other bikes to posts, fences or poles, and that the bracket fits bike tubes from 2.2 cm (0.87 in) to 8 cm (3.15 in). The fifth bullet says the lock can be used alone or with steel cables.
Is the Sportneer ALU-01 well rated by buyers?
The rating field quotes 4.5 out of 5 from 291 ratings, with a best sellers rank of 3rd in Cycling U-Locks. The star breakdown supplied with the listing adds up to 100 reviews — 72 five-star and 6 of them one or two stars — which is not the same figure as the 291 ratings quoted.
How heavy is the Sportneer ALU-01?
The first bullet gives 2.5 lb, with a silicone coating listed as 0.1 in over an 18 mm shackle.
Comments
Reader comments are not checked against the manufacturer's claims above.
No comments yet
Be the first to add something we missed — a price change, a spec that turned out wrong, or how one of these held up.
Leave a comment
No account needed. Own one of these? Tell other readers how it actually performed.