Enhance your cycling performance with this premium Ceramic Bearing Bottom Bracket, expertly designed with high-quality materials for superior durability and precision. Featuring a thread bottom bracket suitable for frames measuring 68-73mm with a BC1.37 tooth stripe, this set offers outstanding reliability for demanding riding conditions. Key Features: · **Advanced Ceramic Bearings:** Equipped with ZrO2 ceramic ball bearings, renowned for their exceptional strength, high temperature resistance, and outstanding corrosion resistance, making them ideal for use in harsh environments with corrosive media. · **Durable Stainless Steel Circles:** The inner and outer bearing rings are crafted from imported SUS316 stainless steel, providing high impact resistance and enhanced durability to withstand the stresses of long rides without deformation or wear. · **Lightweight and High-Performance Design:** Ceramic balls are denser and lighter than traditional steel balls, reducing centrifugal force on the outer ring by 40%, which significantly extends the bearing life and improves rotational efficiency. · **High Elastic Modulus:** The ceramic material's elasticity modulus surpasses that of steel, minimizing deformation under stress to support higher working speeds and improve overall precision during use. · **Simple Installation and Operation:** Designed with user convenience in mind, this bottom bracket assembly is easy to install and maintain, ensuring hassle-free operation for cyclists of all levels. Specifications: · Material: Aluminum Alloy (bottom bracket body) · Bearing Material: Inner and Outer Circles – Stainless Steel (SUS316); Ball Bearing – ZrO2 Ceramic · Type: Thread Bottom Bracket · Suitable Frame Size: 68-73mm · Tooth Stripe: BC1.37 · Inner Diameter: Approx. 24mm (0.94 inch) · Weight: Approx. 122g · Available Colors: Black, Red · Quantity: 1 Set Package Includes: · 1 x Ceramic Bearing Bottom Bracket Set This ceramic bearing bottom bracket combines cutting-edge materials and engineering to deliver exceptional wear resistance, corrosion protection, and operational precision. Its lightweight construction and robust design make it an excellent choice for cyclists seeking enhanced speed, longevity, and smoothness in their rides. Upgrade your bicycle with this reliable and high-performance bottom bracket for superior cycling experience.