New Headset Bearings needed

towlawrian
towlawrian Posts: 67
edited October 2014 in MTB workshop & tech
The bearings in my headset on my bike (scott spark 930 2014) needs replacing however I am having trouble finding the right headset for my frame.

My current headset is a Ritchey Pro Minus Tapered 1.5" – 1 1/8", semi integr. OD 50/61mm / ID 44/55mm[/

If possible all I want to do is change the bearings rather than the full headset cups etc. But I cant find what bearings i need the top is caged bearings and these are the ones I need to change.

Does anyone know what size bearings I will need and where I could get them from?