Features: 1.High strength aluminum alloy, strong and durable, security, anti-theft, anti-corrosion and anti-rust. 2.The original car matches, it is worth buying high-quality accessories. 3.The helmet lock will not affect the overall appearance of the motorcycles. 4.Easy to install, easy to use, compact but rugged. 5.Available in black, red, orange, yellow, green and blue to meet your needs . Specification: Condition: 100% Brand New Item Type: Helmet Lock Material: High Quality Aluminum Alloy Color Optional: Black, Red, Orange, Yellow, Green, Blue Product Composition: Bottom Mounting Bracket (Black Part) + Lock Body (color optional ) Bottom Mounting Bracket Size: Approx. 179mm x 30mm x 10mm /7.0 x 1.2 x 0.4 in(Overall Height: Approx. 52mm/2.0 in ) Screw Hole: Approx. 9mm/0.35in The Distance Between The Two Screw Holes: Approx. 83mm/3.3 in Flat Helmet Lock Size: Approx.62mm x 22mm x 40mm/2.4 x 0.9 x 1.6 in Lock Column: Approx.6mm / 0.2 in Adapted Models: Fits for Yamaha YZF-R25 2014 to 2019 Fits for Yamaha YZF-R3 2015 to 2019 Fits for Yamaha MT-25 2015 to 2019 Fits for Yamaha MT-03 2015 to 2019 What is the problem solved by this product? 1. After parking, the helmet is not convenient to carry; How inconvenient it is to carry a helmet with a motorcycles owner when strolling around the city centre, walking on the beach or shopping! ! ! 2, placed on the motorcycles, will be stolen if you are not careful; If your car is equipped with a helmet lock, you can directly lock the helmet on the motorcycles, mainly without worrying about the theft of the helmet; The original car open mold design, the installation of the helmet lock will not affect the appearance of the motorcycles! ! ! It is the best choice for motorcycles and accessories; Note: Recommended for professional installation.