The Surly Moonlander Fork. Fits up to a 5" tire on a 100mm rim. Awesome.

100% 4130 CroMoly; custom tapered and butted blade

Tire clearance up to 5" on 100mm rims

Compatible with any standard 135mm rear hub or specialty front hubs with rear disc offset

51mm IS disc brake mount; if an adaptor is required due to caliper or rotor choice you must use a front disc brake adaptor

Fully threaded through-blade eyelets at mid-fork; upper and lower pairs of barrel bosses; fender mounts

Not compatible with the Paul 135mm WHUB