I used a Blackburn frame fit to keep my 622-40 touring tires topped up to 6bar.

120psi is not going to be easy no matter what pump you buy ..

Bruce Gordon's hand Made Titanium frame fit is made in the manner of the original Silca Impero

Silca's new Owner has pushed the retail cost envelope of their new version Up past $150

Impero Ultimate Frame Pump | SILCA .. but it is a Life time purchase and premium stuff.