Black Finish Rear Hub; 116mm Wide Lock Nut to Lock Nut. 170mm Long Axle; 3/8" Axle; 36 Holes; Accepts Standard Size Freewheel and Single 6-Bolt Disc Rotor (neither included); Caged Bearings. Includes Axle Nuts! 1.25inch Sprocket Adapter will fit this hub see Part # 20422...
mbrebel.com
2L 3L 49cc 50cc 60cc 66cc 80cc Motorized Bicycle Fuel Gas Tank Petcock Cap Bike. Throttle Clutch Cable / Throttle Line For 49cc 60cc 66cc 80cc Motorized Bicycle. CNC 36T Sprocket W/ 1.5" Adapter Fits 415 chain 80cc Motorized Bicycle Bike.
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I'd start here and build from there. Don't monkey around with rag crap or 2 piece sprocket. This hub means you can attach a sprocket direct to the hub. Some 12 gauge spokeronies and a weinmann alloy rim. Some blue locker and you never need to tighten and adjust the rag crap.