JIS 124L+1 / 124 MM AXLE

The Thun Topaz 124 mm bottom bracket is a sealed cartridge type, designed for bicycles equipped with square taper (JIS standard) cranksets. It provides smooth and reliable operation, being protected against dust and moisture for a longer service life. Its robust construction, with sealed bearings and a durable shell, ensures resistance in daily use and consistent performance for both city bikes and MTB or trekking models. 🔧 Technical specifications: Model: Thun Topaz Type: Bottom Bracket Standard: JIS, square taper Axle length: 124 mm (124L+1) Compatibility: Square taper cranksets System: Sealed cartridge Color: Black / silver