High quality Steel Steering head for custom frame building. These are CNC machined to a very high standard in the uk from billet steel. The overall length is 195mm, and the outside diameter is 50.8mm stepped up to 57.15mm at the ends. They are machined to take 52mm taper roller bearings, a size which is available with seals for a lot of Japanese bikes. The internal bore is 45.5mm. They were made in a batch for a twinshock motocross frame project and are now surplus. I will offer discounts it your buying more than one, just ask. I have 2 other sizes also available, check my other items. Any questions please do not hesitate to ask.