Dirt bike riders and motocross enthusiasts, this wheel rim lock is essential protection for your tires! Measuring 1.6 inches (approximately 4.1cm), this replacement rim lock features a unique contoured shape that protects your inner tube from abrasion and reduces heat buildup during riding. The angled and tapered ribs lock your tire securely to the rim, preventing rotation and potential tire damage, especially important for bikes running lower tire pressures. Made from high-strength nylon and metal materials, this rim lock offers durability without adding significant weight to your wheel. The compatibility is excellent - works for 2-stroke 65cc or 4-stroke 110cc, 125cc, and 140cc motorcycles, particularly those with rear wheel sizes of 80/100/12. Whether you're riding motocross tracks, hitting dirt trails, dual sporting, or tearing around on pit bikes, this rim lock provides that crucial security that prevents tire spin on the rim during hard acceleration or braking. The design ensures a tight lock between tire and rim while the contoured shape minimizes inner tube wear - something every off-road rider deals with eventually. Installation is straightforward as a direct replacement for worn or damaged rim locks. If you're tired of dealing with tire rotation issues or want to protect your tubes better during aggressive riding, this quality rim lock delivers the performance and reliability you need. The materials can handle the punishment of off-road conditions, and the precise engineering means proper fitment and function. Your tires and tubes will thank you for the extra protection, especially when you're pushing hard through rough terrain or landing those big jumps!