Illustrative imageOnGuard · D-lock
OnGuard Pitbull STD 8003
A Diamond D-lock that clips to the frame.
Diamond (ordinary bikes)
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See on AmazonDiamond with a frame mount in the box, and more room inside the shackle than the Mini-7.
This suits you if your policy names Sold Secure Diamond for an ordinary bike and you want the lock clipped to the frame. It weighs 1.44kg, with a 115 × 230 mm locking area and a mount in the box. There is no cable, and no e-bike grade is listed on our records.
Verdict
This suits you if your policy names Diamond and you won’t take a lock that doesn’t clip to the bike. Specs: 1.44kg, 14 mm shackle, 115 × 230 mm locking area, a frame mount, five keys, no cable. The ordinary-bike grade is Diamond. There’s no e-bike grade listed, so if the policy names powered Diamond, check Sold Secure and the insurer’s list before you treat this as an e-bike lock. It isn’t sold as anti-grinder.
See on Amazon- Weight
- 1.44kg
- Sold Secure
- Diamond
- Locking area
- 115 × 230 mm
- Shackle
- 14 mm
Who this suits
- Diamond on a weekday commute, with a clip on the frame
- Ordinary bikes where the policy names Diamond and a Mini already closes on the stand
- Riders who will skip the X1 or D1000 because those boxes have no mount
Less suitable if
- The policy names e-bike Diamond and you haven’t checked this model on Sold Secure
- You need a cable in the same box — that’s the DT 8005
- You need a long shackle for a fat post — that’s the LS 8002 or the ABUS 540
The X1 and the D1000 are Diamond locks you typically carry in a bag. This Pitbull fits if you want Diamond security but also want to carry the lock on the bike. At 1.44kg it’s lighter than the Mini-7, and the mount is in the box. That combination is why it sits on the best-of table: if you need Diamond and you already know you won’t take a loose lock every morning, start here.
Diamond with a frame mount
The locking area is 115 × 230 mm. That’s more generous than the Evolution Mini-7 (83 × 178 mm) and the D1000 (92 × 155 mm). It isn’t a 300 mm shackle. Measure your stand plus the frame tube. If a compact lock already fails on a fat lamp-post, look at the Pitbull LS (115 × 292 mm) or the ABUS 540.
115 × 230 mm locking area
There’s no cable in this box. If the front wheel is quick-release, you still need something else to hold it, or you buy the DT 8005, which is this shackle plus a cable. The cable on the DT isn’t Diamond. Only the ordinary-bike Sold Secure grade is listed. If you ride an e-bike and the policy names the powered grade, the X1 and the D1000 are Diamond for both.
No cable, and no e-bike grade listed
It’s a 14 mm shackle, not sold as angle-grinder resistant. Diamond is the grade. A 14 mm bar isn’t a 32 mm Hiplok. If anti-grinder marketing is why you’re here, this is the wrong lock. If you wanted Gold with a cable and a mount, that’s the Mini-7.
STD, DT, or LS
The DT is the same 115 × 230 mm D-lock with a cable in the box — heavier, still a mount, cable not graded. The LS is the long 115 × 292 mm sibling for posts this one won’t close on. Choose the STD unless you know you need the cable or the extra length.
What works well
- Sold Secure Diamond for ordinary bikes,
- 1.44kg with a frame mount in the box
- 115 × 230 mm — more room than the compact Minis
- Five keys listed
What to watch for
- No e-bike Sold Secure grade listed
- No cable, not sold as angle-grinder resistant
- 230 mm won’t close on every fat post
One thing we’d change
Print the ordinary-bike grade next to the e-bike line, even if the e-bike line is blank. Too many Diamond D-locks are sold as if every policy is the same.
The numbers
The weights, grades and sizes below come from the maker and from Sold Secure. If a figure’s missing, we’d rather leave the cell blank than guess.
| Grade | |
|---|---|
| Sold Secure (ordinary bikes) | Diamond |
| Maker says it resists grinders | No |
| Size and weight | |
| Type | D-lock |
| Shackle | 14 mm |
| Locking area | 115 × 230 mm |
| Weight | 1.44kg |
| In the box | |
| Frame mount | Yes |
| Cable included | No |
| Keys | 5 |
Other options
Another option
OnGuard Pitbull DT 8005
Same Diamond D-lock, and you want a wheel cable in the box. The cable isn’t graded.
See on AmazonAlso worth a look
Litelok X1
The policy names e-bike Diamond, or you want the armoured lock when you’ll still carry 1.7kg in a bag.
Not currently available on Amazon UKCommon questions
Is the Pitbull STD Sold Secure Diamond?
Yes — Pedal Cycle Diamond on the listing. There’s no e-bike grade recorded. Check the marking on the lock you buy, and your insurer’s list.
STD or DT 8005?
Same 14 mm shackle, same 115 × 230 mm locking area, same mount. The DT adds a cable and is listed at 1.6kg. The cable isn’t Diamond. Choose the STD unless you want that cable in the box.
Pitbull STD or Litelok X1?
The X1 is Diamond for ordinary bikes and for e-bikes, 1.7kg, sold as armoured, no mount in the box. The STD is Diamond for ordinary bikes, 1.44kg, with a mount. Choose on the e-bike grade and on whether you’ll clip it on.
Will it fit a Sheffield stand?
Often yes. The locking area is 115 × 230 mm. Measure your stand plus the frame tube. If a Mini already fails, look at the Pitbull LS or the ABUS 540, not a thicker compact lock.
If you haven’t measured your stand yet, start with how to choose a bike lock. You can compare the shortlist on best bike locks UK, or read D-lock vs chain. For the differences between lock types, see bike lock types explained, and for sizing, see shackle size and lock security. For how the research is put together, see how we research.
Prices and stock on Amazon can change, so it’s worth a check on the day you click through.
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