Try Downhill Shimano Zee or Saint RDs. They are to sit higher, more tucked in.
Originally Posted by
onbike 1939
Yes....I used the sprockets from another Shimano cassette to change mine in a search for smaller gears.
Problem is that the small 17" inch wheels means that if one has to use a larger capacity rear der in order to achieve more chain wrap, then even a medium rear der means that the hanger being longer is perilously close to the ground.