Tbolt USA

Tboltusa has been around forever most of their products are very good 

factory minibikes . Com is great too 

T Bolt USA is an online store. They sell pit bike parts, accessories, etc.
 

“TB Parts” is the company that offers big bore kits, cranks, and misc. parts. 
 

I have used TB Parts for years and been happy with the products. Great customer service as well.

I currently have a 143 kit, V2 head for a KLX110. I’m using the wheels and rear shock as well. I have the 170 big bore kit on my KLX140.

As far as buying TB Parts products, you can buy directly from TB Parts, or from TBolt USA, as well as Factory Mini Bikes and Faster Minis. I’ve used all of them for pieces here and there and had good luck.

Mostly TBparts. Both of these companies have been around since the beginning of the pit bike era and never folded. Must say something about their products and commitment. I have used them and will continue to as long as they keep these products available. 

Tboltusa.com is a great company who retails most manufacturer parts as well as a few of their own private label things I believe.  I have used them for a long time and never had any issues with any of their products.  I’ve built klx, bbr v2 mm12p v3 etc and most everything was sourced through those guys.

Have an xr 100 big bore kit. Quality is very good.

I just ordered the bottom end bearing kit and they use NTN bearings. Seals appear to be good quality also. I’ve used them for years and built a bunch of engines without any problems. I’d highly recommend them. 👍🏽👍🏽

Save your money on the BBR output shaft and buy the updated one from Kawasaki. Think 2008 is the year but not sure. 
 

If you go to a big bore, save your money on a cam and buy a VM26 carb and something similar to a BBR U Flow setup. No matter what you throw on the motor it’ll really struggle with the stock carb. 143 kit with a property setup carb and intake is zippy enough for me. 

It is 08 when they updated it, you can also drill the header out to 5/8 still quieter than an aftermarket pipe but it’ll breathe a little better.

No experience with it, I’m pretty sure you have to go through with boring cases etc. Unless you’re doing some really competitive pitter racing the 143 kit, Mikuni VM26 and a good filter setup really bring some juice out of these things. I couldn’t imagine needing much more for a pit bike.

Correct, 08 is the updated output shaft and if you are going to split the cases you might as well do the 4th gear shift drum while you are at it. On a side note I’d eliminate the Phillips head bolts and get the replacement Allen heads, it will make your life much easier. 
Also a cradle mount will same your cases from ripping out the foot peg bracket bolts. 

Last I checked the OEM cranks were still available but unfortunately they are more than the stroker cranks. 
I don’t know whether that output shaft is overkill, they have quality parts but everyone seems to like the 08 up and they seem priced well. 

Lets see them Pitbikes !!

Good company

Nice photos! Sweet bikes!

The stroker crank works great and is durable. The only problem I ran into was with the 2nd gear. The 177cc engine would spit them out at least once a month with heavy riding. CHP use to make a hardened 2nd gear but I wasn’t able to find one on the last engine I built.  I warned the guy that 190cc would be tough on the transmission.  

TBolt has been around a long time. TBParts has also been around for a long time. Factoryminibikes has been around for a long time. 

I remember contacting TBParts directly by email ~20 years ago and getting my order fixed. I also lived next to the Factoryminibikes owner for many years and he's a stand up guy who does a lot for the sport of minibikes at local and out of town races, in person. I do not have any experience with TBolt. 

TBolt sells TB Parts.  They have excellent customer service and are very knowledgeable with what you need for your rebuild. 
You can use the stroker crank without boring the cases.  Drop in and go.  I’ve probably got a stock crank laying around but couldn’t promise it’s any better than your stock crank (unless of course it’s bad).  I run stroker cranks in all of mine. 
The output shaft just buy OEM. I just go 2012 klx110 non L and buy the output shaft, shift drum and star.   
If your output is indeed broken, inspect the gears thoroughly.   

You guys think I should buy this 1200 bucks? Says it needs a starter but kicks over fine. Thought I read somewhere that kick starting  these things can break cases, kicker gear or something. Think it handles like shit? I've always wanted one tho. Thanks vidtards