CyclingCeramic Bottom Bracket BB386 Shimano Black

CyclingCeramic bottom brackets are combined with low-friction ceramic bearings that are more durable than standard bearings. The high-quality finish of the bottom brackets enables them to achieve high performance. The

extreme hardness of CyclingCeramic balls results in a bearing life 4 to 5 times longer than that of standard bearings, while the special grease keeps your bearings sealed and protects them from external elements that could impair proper operation.

Silicon nitride balls are used to improve bearing performance. Ceramic balls are lighter, stiffer, smoother, harder and more resistant to corrosion. They require less lubrication and have lower thermal expansion than their steel counterparts. The balls are continuously polished for 45 days to obtain rounder, smoother balls. This reduces the contact surface as much as possible.

Details

• Compatible with 24 mm bottom bracket axle (Shimano) / frame internal diameter 46 mm / width 86.5 mm (pressfit mounting)
• 7075 aluminum.
• Life expectancy 3 to 5 times greater than conventional bearings.
• Ceramic balls 58% lighter, 121% stronger and 68% harder than steel balls.
• Grade 3 ceramic balls (polished for over 45 days) for virtually no friction.
• Case designed, machined and assembled in the CyclingCeramic workshop in France.
• Weight: 80g