Mammoth X-Line Motorcycle Cable The Mammoth X-Line motorcycle cable is perfect for use with existing cable or U-Locks. The X-Line allows you extend your security coverage by adding another 1.8 m length to your locks, or for winding through wheels while your U-Lock secures the frame to a lamp post or other immovable object. Motorcycle Cable Features: 6 mm thick strong cable. Woven steel construction. Double loop ended. 1.8 m overall length. Protective coating for Anti-Cut protection. Great for extending locks. Locks available separately. This is an extension cable.