Shimano Press Fit BB72 Bottom Bracket R1 They have streamlined the oil

They have streamlined the oil route throughout the system to prevent air bubbles from being captured in the system

and then extensively machined

2 sizes available

5 mm plug is great for bigger punctures on mtb tyres

Max Tire Clearance: 25mm

Shimano Press Fit BB72 Bottom Bracket R1 They have streamlined the oilSHIMANO ULTEGRA Bottom Bracket Press Fit HOLLOWTECH II 86. 5 mm shell width. With reliable SHIMANO bearings and seals, the SHIMANO ULTEGRA bottom bracket has a long service life. Specifications Optimum power transfer Lightweight maintains efficiency DURA ACE proven 4 arm design: Same stiffness and lighter weight 14 g lighter weight and half the friction of the SM BB6700, while maintaining the same durability. Mfr Claimed Weight 69g