I recommend getting either the Road Morph mentioned above or some CO2 with 16g cartridges. If the latter, carry your 90 psi pump with you in case you run out of cartridges (to get you home).
The Road Morph is the only frame pump I've seen comfortably go up to 120 psi. Every other pump rated that high is only rated that way because it won't blow out a seal, but it takes a body builder who can bench 250 to actually get it into a tire.
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