[Ls1cameric]

Anyone have experience with the Tbolt 88 big bore kit? Is there a better one out there? I'm on a budget (wife says so) and I wanted to know if upgrading the oil pump was necessary when doing the bore kit?
Anything else that is necessary Also?

 

[Quinc]

If on a budget you can get a lifan 125cc off ebay for 300$ shipped and have much more power.

 

[tmas]

Anyone have experience with the Tbolt 88 big bore kit? wanted to know if upgrading the oil pump was necessary

I think you mean Trail Bikes 88 BBK. You can do it without the oil pump but it's Recommended.
tmas

https://tboltusa.com/store/tbparts-...kit-brsl70-xl70-atc70-trx70-68-81-p-1430.html

 

[SS LS1]

They are both right, but to be honest you will be looking for more power with just an 88cc kit. The tiny bit more displacement does help a little but most gains are from higher compression and a Race head. But at that cost I would just get a cheap 125cc kit and be done. Way more power and now you have two motors. For more than you need power the Pirahna 140cc will likely scare you at first and is quite inexpensive also.