TIP: make your own security chain for cheap - Pinkbike Forum
OKG Extra Long Security Chain - 10ft x 3/8in Thick Heavy Duty Chain, Eco-Zinc Plated - Uncuttable Chain for Outdoor & Indoor Use -Bike & Motorcycle Lock Chain - Ideal for
REETOMETAL Heavy Duty Security Chain with Reinforced Hidden Shackle Lock - Hardened Steel 6 Foot × 5/16 (9mm) Square Link & 304 Solid Stainless Steel Puck Trailer Padlock Anti-Cutting : Sports & Outdoors
BIGLUFU Motorcycle Chain Lock 100cm/3.3ft Heavy Duty Bike Chain Lock Anti-Theft Durable Cut Proof 14mm Thick Security Bicycle Chain with 4Keys 16mm U Lock for Moped,Scooter,Motorcycles : Sports & Outdoors
Vulcan Brands Premium Case Hardened Security Chain and Lock Kit
ABUS Hardened Steel 10KS 10 Foot x 3/8 Thick Square Security Chain for Bikes, Containers, Trailers, ATV's, Motorcycles and Personal/Industrial Property : Sports & Outdoors
VULCAN Security Chain and Lock Kit - Premium Case-Hardened - 3/8 Inch x 9 Foot Chain Cannot Be Cut with Bolt Cutters or Hand Tools, Shop Now:, By TrucknTow
OKG High Security Chain - 10ft Extra Long Heavy Duty Chain - 9mm Thick Hardened Steel Bolt Cutter Proof Chain - Premium Anti Theft Chain Ideal for Motorcycles, Generators, Yard Tools
VULCAN Security Chain - Premium Case-Hardened - 3/8 Inch x 3 Foot
Vulcan Brands Premium Case Hardened Security Chain and Lock Kit
Vulcan Case Hardened Security Chain
Vulcan Security Chain - Premium Case-Hardened - 5/16 inch x 3 Foot Chain Cannot Be Cut with Bolt Cutters or Hand Tools
TrucknTow: High Quality Trucking & Towing Accessories
PEWAG 10mm (3/8) Anti-Cut Security Kit w/VIRO Panzer Lock
VULCAN Security Chain - Premium Case-Hardened - 3/8 Inch x 6 Foot Chain Cannot Be Cut with Bolt Cutters or Hand Tools : : Sports & Outdoors