BIKES MTB BOTTOM BRACKET CUP & BEARINGS BB SET,24tpi 1.37 STD THREAD BLACK

Mtb Or Any Bike Cotterless Bb Cup Set + Bearings 24tpi 1.37 Bicycle Black. Standard thread 1.37 X 24tpi as used in English, iso, jis bottom brackets. Commonly used bottom bracket set for a standard, mtb, trekking, hybrid, racing, kids bikes.