Upgrade your Shimano crankset with the CeramicSpeed Alloy Preload Bolt, designed for precise preload adjustment and enhanced ride performance. Crafted from durable black alloy, this preload ring adjuster is engineered to fit 28.99mm Shimano crank spindles, ensuring a secure and reliable connection between your crank arms and spindle. The high-quality materials and precision engineering optimize crank stability, reduce noise, and improve power transfer during cycling. Built for cyclists who demand durability and performance, this preload bolt features innovative design elements that facilitate easy installation and maintenance. Its sleek black alloy finish adds a professional aesthetic to your drivetrain, while the advanced component technology ensures long-lasting reliability in various riding conditions. Ideal for road cyclists, mountain bikers, and professional mechanics, this preload bolt enhances overall crankset performance and drivetrain efficiency. Optimize your bikes handling and drivetrain longevity with the CeramicSpeed Alloy Preload Bolt the perfect upgrade for Shimano cranksets seeking premium quality, precise preload adjustment, and a clean, stylish look. Suitable for avid cyclists and bike enthusiasts looking for high-performance components that deliver superior engineering and reliable functionality.