The Shimano 105 BB-5500 is a long-standing Octalink bottom bracket known for its reliability and smooth performance. It continues to provide excellent service for cyclists, even after years of consistent use. Compatibility with Crankset Types: The 105 BB-5500 comes in two axle lengths, 109.5 mm and 118.5 mm, catering to 2-way and 3-way cranks, respectively. This versatility makes it an ideal choice for a variety of 8-speed drivetrain setups. Robust Construction: Featuring a steel axle and high-quality materials, this bottom bracket is built to withstand the demands of road cycling. Its durable design ensures long-lasting operation, even under challenging conditions. Precise Fit Options: The BB-5500 is available in multiple configurations to suit different bottom bracket shells, including 68 mm (BC1.37) and 70 mm (M36) versions. These options allow for seamless integration into a wide range of bike frames. Despite its age, the Shimano 105 BB-5500 continues to hold up as a reliable and efficient bottom bracket for 8-speed gearing, proving its timeless value for road cyclists.