BMX/MTB Steel One Piece Crank Bottom Bracket Axle 170mm OPC + YST BB Set Option

Large Shell BB Set
YST Professional (OEM packaging)
Complete with both frame cups & set of 5/16" caged bearings
1 fixed cone, 1 adjustable cone, washers & lock nut

Standard size for BMX & Mountain bikes that use a solid 1 piece crank
Known as large shell / USA BB

Frame cup shell size 51.3mm
Outside diameter of bearing cages 44mm

Will also fit 3 piece cranks that use this large shell bottom bracket
If in any doubt please ask

170mm One Piece Crank 
Oxford Darxide
Perfect for old school BMX
Raleigh Burner, Mongoose, Haro ETC
That use a large shell BB
Suitable for pedals with 1/2" thread

Please note:
Pedal end chamfer may vary depending on our supplier
See pictures for details

Available separately or as a set
Choose option from the drop down menu