'99 CR125 Bottom End

Wiseco has a problem with quality control, no big surprise since their stuff is made in China. Just my opinion, but they're junk. I came to own an 07 RM 450 with about an hour and a half on a complete rebuild on it, with a brand new Athena big bore kit, genuine Zook parts in the head, etc:. The crank locked up solid with that little time on it, smoked the new cylinder with it, as well as a couple of valves.
The guy who owned it called Wiseco and they basically said "Sucks to be you". He was so mad he parked the bike and went out and bought a brand new YZ250. I bought it from him a few months later, in the basket. He took an ass whippin' on that bike.
Does that sound like the kind of company you want to support? Just a thought here. If you still have the OEM crank, go get a Pro-X rebuild kit for $100 or so, and get the original rebuilt.
Hot Rods-Chinese. Your call.

We installed a Wiseco crank kit in my boy's YZ85 that had probably 15 hours on it when the connecting rod snapped in half and destroyed everything below the cylinder. There was no bearing failure whatsoever--the rod just snapped in half. That is nothing other than poor quality material.

I bought a blown CRF250R for $700 when the previous owner had 2 hours on a Hotrods crank kit and the rod snapped while he was in the air on a big jump--this destroyed the engine and nearly ended his moto career.

We now rebuild everything with OEM cranks, no exceptions for me. I know lots of people have had good results with aftermarket cranks, but I'm not taking the gamble anymore.

Spectro Oils is a very good oil (used at many years on the national circuit) Wiseco does have issues with QC, I would recommend going back to OEM crank.