Bottom Bracket Thun Topaz 128K 68mm

The Thun Topaz is a sealed cartridge bottom bracket for bikes with a square-taper crank fitting. Fully enclosed and maintenance-free, its bearings stay protected from dirt and water for a long, smooth service life. Thun is known for reliable German bottom-bracket quality, widely used on city, trekking, and hybrid bikes. This version has BSA threading (English, 1.37" x 24T), a 68mm shell width, and a 128mm axle length.  

Deze uitvoering heeft BSA-schroefdraad (Engels, 1.37" x 24T), een huisbreedte van 68mm en een aslengte van 128mm.