Inverted (or UPSD, UP Side Down) fork tube assemblies from Öhlins are often transferred from metric Superbikes to Harley-Davidsons. These assemblies feature outer fork tubes that are tapered from 54mm to 50mm and 43mm diameter inner tubes. To fit them in a Dyna or Softail you'll need triple trees, wheel axle, caliper brackets and eventually a set of fender brackets. We offer Fat & Beefy Wide Glide (252mm pitch) Billet Aluminum Triple Trees with a 30mm thick upper, 35mm lower yoke and 48mm clamping section for the fork tubes. The lower triple tree is equipped with fork stops that can be easily adapted for use on custom bikes. Wheel axles are for use with the late ball bearings for 25mm axles. These bearings can be installed in all 2000 and later wheel hubs originally set up for use with 3/4" or 1" diameter axles. Caliper brackets are for use with 11 1/2"(292mm) discs and 2000-2014 style Softail 2000-2005 Dyna calipers. Can also be used with 2006-2017 Dyna calipers when used with 11 1/2" (292mm) discs.