Enhance your bicycle’s performance and durability with this high-quality Bicycle Bottom Bracket, crafted from robust steel for long-lasting use. Designed to fit 80mm and 100mm frame shells, this bottom bracket features an integrated system that protects the frame while delivering increased power output, outperforming ordinary bottom bracket structures. The steel shell effectively absorbs roundness tolerance during installation, ensuring a secure and precise fit for your bike’s bracket bottom. Key Features: · Durable Steel Construction: Made from solid steel, this bottom bracket offers exceptional strength and longevity for reliable cycling performance. · Frame Protection & Enhanced Power Output: The integrated system design safeguards your bike frame and provides better power transfer compared to conventional bottom brackets. · Precision Fit: The steel shell accommodates roundness tolerance in the frame shell ports, allowing for smooth and accurate installation. · Compatibility: Suitable for 80mm and 100mm frame shells with cups thread size of 34.798mm and pitch of 1.37 * 24TPI. · Multiple Size Options: Available in 80*142mm, 100*155mm, and 100*177mm sizes to fit various bicycle models and rider preferences. · Easy Installation Reminder: For safety and proper fitting, it is recommended to use a BB tool when installing or replacing the bottom bracket. Specifications: · Condition: 100% Brand New · Item Type: Bicycle Bottom Bracket · Material: Steel · Color: Black · Fitness: Compatible with 80/100mm Frame Shell · Cups Thread Size and Pitch: 34.798mm, 1.37 * 24TPI · Optional Sizes: 80*142mm / 3.1 * 5.6 inch, 100*155mm / 3.9 * 6.1 inch, 100*177mm / 3.9 * 7.0 inch · Weight: Approx. 384g Package Includes: · 1 x Bottom Bracket with Screws Note: The product may be shipped as either the new or old type randomly. Please consider this before ordering. This Bicycle Bottom Bracket is an essential upgrade for cyclists seeking durability, precise fit, and improved power transfer. Its solid steel construction and integrated system make it a dependable component for enhancing your bike’s overall performance.