BSHWKP 5pcs Push Bike Gear Flywheel Bevel Pinion Fits 66cc 80cc Motorized Bicycle

Fits perfectly

just what i needed for my 50cc

They're good replacement parts. Just wish they came with the little keys. But worth the money. If only I could get the old ruined stock gears off the engine I would have 2 more working engines.

There’s not much to say for these little gears except they are pretty strong considering the abuse they see on my bike. i did not have to file the key way, which is usually what has to be done and that is a huge time saver! I wish there was a different set up instead of the straight drive that it is. I’d also like to see the gears in different size options. Would I recommend these gears, absolutely.

I purchased these as my existing crank gear was all chewed up due to the retaining bolt coming loose. Very nice to be able to use one and have 4 extras lying around in case you need them. Very smooth engagement and I have noticed significantly reduced geartrain noise.