ULTRA Heavy duty front freewheel designed by SBP, made exclusively for Sick Bike Parts by White Industries.
UHD freewheel required if you are building an electric motor drive with side loading properties.Center hole thread is 1.37 x 24 tpi, 5 bolt pattern diameter is 2.63 inches.
Leaders in the industry for hiqh quality bicycle components. Not only are these freewheels durable but are also serviceable.
Made in the U.S.A. Six month replacement warranty
Best I've found
Posted by John Stowe on 07 04 2018
I'm using this freewheel on a 6-8KW Tangent Ascent. I've put ridiculous amounts of torque through the freewheel and it hasn't even slightly warped. I'm talking enough torque to blow up chains and turn Raceface aluminum chain rings into tacos. So ya it's good.
Posted by Sean Cornell on 09 07 2017
I'm using this freewheel with a home made adapter and 9 tooth #35 sprocket in a 1500 watt DIY mid drive. The Ditca lasted 5 miles this is on 70 miles and so solid! this thing is a beast and very quiet.