SM-Parts Aluminium Track Schraubritzel color:silber-poliert making it virtually invisible

making it virtually invisible

Bottom bracket length: JIS - 113mm

Width: for 1/2 x 3/32" chains (also 1/8" compatible)

which is made of lightweight aluminum

RIDEA Track bottom bracket BB Cups steel bearings

SM-Parts Aluminium Track Schraubritzel color:silber-poliert making it virtually invisibleSM Parts aluminum track screw sprocket The new SM Parts aluminum track sprocket is completely CNC machined screw sprocket, made from durable 7075 T6 aircraft aluminum, this material has 300% more strength than the usual types of aluminum otherwise used in the bicycle industry, which ensures excellent durability. The material in conjunction with the precise bores gives the pinion a feather light weight while maintaining consistent stability. Material: