X4P Boxer short shackle U-lock mated to a 3.5' chain with massive 14mm (0.55") link titanium reinforced chain. Perfect for powersport users who travel fast but need maximum protection for high crime areas. Boxer U-lock can also be used alone as a disc lock. SKU: #8016Security Rating: 99 | Lock Series: Beast | Technology: X4PPower Sport Protection Offer: $1401 | Bike Protection Offer: $5001For Powersports: Yes For Bikes: Yes