1. Product Overview
The Smith & Locke D-Lock is a robust security device designed to protect your belongings. It features a durable steel body and a hardened steel shackle, making it suitable for securing bicycles, motorcycles, and other valuable items against theft. Each lock is supplied with two keys for your convenience.

An image showing the Smith & Locke D-Lock, highlighting its robust steel body and hardened shackle. The lock is presented in its standard grey color.
Key Features
- Hardened steel shackle for enhanced cut resistance.
- Durable steel body construction.
- Key unlocking mechanism.
- Overall dimensions: 170 mm (width) x 245 mm (height).
- Internal shackle dimensions: 115 mm (width) x 185 mm (height).
2. Setup
The Smith & Locke D-Lock comes pre-assembled and ready for use. No complex setup is required.
- Inspect the Lock: Before first use, visually inspect the D-lock for any signs of damage or manufacturing defects. Ensure the shackle moves freely and the key operates smoothly.
- Key Management: Keep one key in a safe, accessible location and store the spare key separately. Avoid attaching both keys to the same keyring.
3. Operating Instructions
Follow these steps to properly secure and unlock your D-Lock.
Locking Procedure
- Position the Item: Place the item you wish to secure (e.g., bicycle frame, motorcycle wheel) next to a fixed, immovable object (e.g., bike rack, lamppost).
- Insert Shackle: Open the D-lock by inserting the key and turning it to release the shackle.
- Secure the Item: Pass the shackle through the item and around the fixed object. Ensure both the item and the object are encompassed by the shackle.
- Close the Lock: Re-insert the shackle into the lock body and push it firmly until it clicks into place. Remove the key.
- Verify Security: Gently pull on the shackle to ensure it is fully locked and cannot be opened without the key.
Unlocking Procedure
- Insert Key: Insert the key into the lock cylinder.
- Turn Key: Turn the key to release the shackle.
- Remove Shackle: Pull the shackle out of the lock body.
- Retrieve Item: Remove the D-lock from the secured item and fixed object.
4. Maintenance
Regular maintenance will ensure the longevity and smooth operation of your D-Lock.
- Lubrication: Periodically apply a small amount of graphite powder or a silicone-based lubricant to the keyhole and shackle mechanism. This helps prevent rust and ensures smooth operation. Avoid oil-based lubricants as they can attract dirt.
- Cleaning: Wipe the lock body and shackle with a damp cloth to remove dirt and grime. Dry thoroughly.
- Storage: When not in use, store the D-lock in a dry environment to prevent corrosion.
5. Troubleshooting
If you encounter issues with your D-Lock, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Key is difficult to insert or turn | Dirt or corrosion in the cylinder; worn key | Apply graphite lubricant to the keyhole. Try the spare key. If the problem persists, the lock may need replacement. |
| Shackle is stiff or stuck | Dirt, rust, or lack of lubrication | Clean the shackle and lock mechanism. Apply a silicone-based lubricant to the shackle entry points. |
| Lock does not secure properly | Shackle not fully engaged; internal mechanism damage | Ensure the shackle is pushed in completely until it clicks. If it still doesn't secure, the lock may be damaged and require replacement. |
For issues not listed here, please contact customer support.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | SMITH |
| Model | D-Lock 170 x 245 mm |
| Material | Alloy Steel |
| Shackle Material | Hardened Steel |
| Color | Grey |
| Locking Mechanism | Key Unlocking |
| Overall Dimensions (W x H) | 170 mm x 245 mm |
| Internal Shackle Dimensions (W x H) | 115 mm x 185 mm |
| Number of Keys | 2 |
| ASIN | B01MXUK4YQ |
7. Warranty and Support
For warranty information, product support, or to purchase replacement parts, please refer to the official SMITH website or contact their customer service department. Keep your purchase receipt as proof of purchase.
Contact Information:
- Manufacturer: Smith
- Website: Visit SMITH Store on Amazon
- ASIN: B01MXUK4YQ