U-lock ONGUARD Brute STD X-SERIES 8001 — hardened shackle 16.8 mm, inner widths 115 mm and 202 mm, includes 5 coded keys

U-lock ONGUARD Brute STD X-SERIES 8001 is a hardened-steel bicycle lock engineered for high-security fastening. The lock features a 16.8 mm hardened shackle and is available with two inner clearances, 115 mm and 202 mm, to accommodate different frame sizes and mounting points. Supplied with five coded keys, this U-lock is designed for securing bicycles to racks, solid anchors or immovable fixtures in urban and commuting environments.

Advantages

The hardened 16.8 mm shackle provides increased resistance to cutting and leverage attacks compared with thinner shackles. Dual inner clearance options allow selection of a size that gives a snug fit to the frame and anchor point, reducing leverage opportunities. Delivery with five coded keys ensures multiple users can access the lock while preserving key control and allowing spare keys. The lock body and materials are constructed for weather resistance and daily outdoor use.

Suitable for

• Securing commuter and city bicycles to bike racks
• Locking bicycles to fixed anchors, posts or railings
• Shared access situations where multiple keys are needed
• Use in urban environments with higher theft risk

Key specifications

• Shackle diameter: 16.8 mm hardened steel
• Inner clearances: 115 mm and 202 mm options
• Lock type: U-lock (D-lock) design for frame-to-anchor security
• Keys: five coded keys included
• Intended use: outdoor bicycle security for racks and solid anchors

How to use

Choose the inner clearance that best fits your bicycle frame and the anchor point you will use. Position the shackle so it passes through the bicycle frame and wheel and engages the chosen anchor point, minimizing empty space inside the shackle to limit leverage. Insert the shackle into the lock body until it clicks, then remove the key and keep it in a secure place. When unlocking, insert the coded key, turn to release the shackle and remove the bicycle. Store spare keys separately to avoid loss.

Usage recommendations

For optimal security, use the smallest inner clearance that fits both frame and anchor, attach the lock through the frame and a wheel where possible, and avoid leaving the bicycle locked in isolated or poorly lit areas for extended periods.