Join Date: Sep 2004
Bikes: 2008 Davidson Custom Titanium, Custom Seven Steel Tandem, 1981 Shogun Touring Bike
I looked around for those a year ago. It is hard to find ANY 20" fork with a steerer tube long enough for a twenty, let alone a carbon fork. The Woundup 20" fork is Very Nice
and has v-brake bosses, but >$400 is kind of expensive considering what it is going to be used on. The $200 Answer Carbon Expert looks nice but AFAIK
has no provision for mounting brakes. It might be possible to drill a hole through the crown and install a caliper brake. Many other 20" carbon mini BMX forks, like Answer Scythe and Redline Microline, have rider weight limitations, like <100 lbs., and no brake mounts. Granted, you're not going to be doing a lot of skatepark riding on your 20, but how lucky do you feel? Breaking a fork could really ruin your day.
All that said, I'd look around for new recumbent forks.