Kouba lowering link (CRF4) will lower the rear 1.75" assuming the race sag is still set at approx. 100 mm's/3.9". (Honda's CRF recommendations.)
Being vertically challenged, (5'7"), the only prob I had barging on my 450X was when I came to a stop! ...
I have this lowering link on my XR650L as well as my 450R, and there're great, I had to have ...
Well built! Better than stock piece of equipment. Easy install too. ...
Easy to install but the 1 3/4 drop was to much. It took to much travel from the rear suspension. ...