Amazon.com: Motorcycle Helmet Lock & Cable. Sleek Black Tough Combination PIN Locking Carabiner Device Secures Your Motorbike, Bicycle or Scooter Crash Hat (and Jacket) to Your Bike. : Automotive
Motorcycle Helmet Lock Waterproof and Rustproof Motorbike Helmet Lock Hanging Hook Battery Car Helmet Anti-theft Lock - Walmart.com
Lidlox Single Helmet Lock Black or Chrome Sportsters 09 or Newer – Baum Customs