Amazon.com: Motorcycle Helmet Lock, Electric Bike Hook Lock Security Metal Padlock 2Keys for 0.9‑1.1in Handlebar Universal : Automotive
7/8" 20-26mm Adjustable Black Motorcycle Handlebar Helmet Lock with 2 Keys Kit | eBay
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Amazon.com: 2 Pack Motorcycle Throttle Lock & Motorcycle Helmet Lock, AUCARAUTO Motorcycle and Helmet Anti-Theft Security Protection Solid Alloy Lock, Fits for Motorcycles Mopeds ATVs Bikes, etc. (Black) : Automotive
Amazon.com: Motorcycle Helmet Lock Fits 1" (25mm) Handlebar Anti-Theft Helmet Security Lock with 2 Keys Fit for Motorbike Scooter Street Bike : Automotive
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Amazon.com: Motorcycle Helmet Lock, Metal Motorbike Helmet Lock Motorcycle Safety Lock with 2‑Key Metal Small Portable Universal for 22mm Handlebar : Automotive
Amazon.com: HDBUBALUS Motorcycle Helmet Lock Universal Fit for 7/8'' 22 mm Handlebars Compatible with Harley Sportster XL 883 1200 48 Cafe Racer Touring Road King Dyna : Automotive
SATO RACING | Helmet Lock (Handle Bar mount type) + 8mm Mirror Mount
SATO RACING | Helmet Lock - Universal Handle Bar mount type
Universal Motorcycle Anti-theft Helmet Lock Bike Handlebar Security - Walmart.com