Well ... I'm not a fan of the Cafe Racer

, but I would think in three ways.
First way (the easy) and remove the fork Bricke simply bolts to the fork tubes and both fork tubes just look out from above the crown.
Simple test times with 20mm.
The second option is to look for a couple of fork tubes with the diameter of the TR 1 (have a list of all Japanese forks the same diameter) is shorter than that of TR1. As a rule, can fit all dip tubes are replaced.
Third idea, but very complicated and expensive ...(. YuLung I think) it has made to reduce the raw fork, but this can only make someone a very good lathe, as well as the sales for the snap ring must be cut back.
Sure, a Cafe Racer riders say more ..