Srad
Hi, And Welcome.
A Few Days Ago I Purchased 2 Of Those Kits From "bicycle-engines.com" For $49.99 Per Kit. Mine Are For The 4 Stroke With The Freewheel Adapter. Go To The 2 Strokes Parts For The Non-freewheel Solid Adapter.
I Ordered 2 Kit`s And A Throttle Cable To Get The Free Shipping On Over $100. Order`s. Saved $23. On S/h. They Are Quality Parts.
The Left Had Thread For The Sprocket Is Larger Than The Standard 1 3/8" X 24 Tpi. That Is So The Right Hand Thread (on The Left Side) 1 3/8" X 24 Tpi Can Accept The Drum Brake.
When You Choose The Sprocket Size = Number Of Teeth = 44, 48 Or 56 It Will Let You Choose Only What Is In Stock.
They Kits Have Sealed Heavy Duty Ball Bearings, Not Regular Bicycle Bearings. I Don`t Know If There Is 2 Bearings On Each Side, They Feel Heavy Enough For 4 Bearings!!
Ron