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I have had one of these kits in the closet for a couple of years now. I have lost interest in using it. I tried the intake and a different carb that I had on a motor once. Everything else has never been used. Here is a link to it: Trail Bikes 88cc Complete Racehead Kit CRF50-XR50 How...

I have a 91 CT70 with a 12v motor. The vin number and motor number are on California's back registration owed list to the tune of 543 bucks. I refuse to pay it. I have a KO frame with a clean vin. It looks like everything will swap over except the seat. I can handle that. The engine is my...

I have a motor that I bought in a box completely disassembled by the previous owner. Mainshaft looks right. I am trying to figure out the countershaft assembly. The parts book shows a collar #4 that I didn't have so I ordered one. I do not think that collar should be there. Now I am wondering...

I have a 1988 Z50 bottom end almost ready to put together. I would like to replace the pump with a high volume one. I have the Doctor's pre 82 high volume pump in my stock of parts. I'm just curious why that pre 82 pump would not fit. The pumps look the same to me. I know the shafts are...