Steering bearing Pioneer 550, 555, 05, 20, 21, 23 - set

Complete set of steering bearings for Pionýr motorcycles, steering cups are identical for both upper and lower mounting. Thanks to the zinc-plated surface treatment, the components are protected against corrosion.

• Pioneer - 550, 555, 05, 20, 21, 23

• Frame bowl: 2x
• Steering bowl: 2x
• Ball set: 2x

Technical parameters:

• Surface treatment of bowls: Nitriding (chemical-thermal treatment)
• Properties: Thanks to nitriding, the cups have a very high surface hardness and excellent wear resistance (ball extrusion).
• Appearance: Without additional surface treatment (characteristic dark/matte surface after nitriding).