Pitster Pro - 155 Z H-O Engine

Fantastic engine and look forward to racing it in my personal race bike. Also, must add that the TBolt team is great to do business with!
Dion B.
CycleTech Performance

Got this motor with the v2 head setup.holt on is all I can say.tbolt has the best customer service.tboltusa all day!!

Used this to replace the 125cc engine in a SSR B2 Pro 125 with 14/12 wheels. 125 was too sluggish with the bigger wheels. This 155cc does a LOT better. Was pretty much a clean swap, just some minor customizing to be done.

Bought this engine to replace my tired Lifan 125cc in my Motoped Pro. Wow! I would not lie to say Double the power PlusPlus. It was not plug n play in my setup, but with a rotating intake and a offset kickstarter swap. It was in and working, but to be complete I need to find wider offset cranks, or install the $300 foot peg kit. I am more than satisfied with the upgrade.

T bolt is a great site pitster is not.

This motor has tons of power and incredibly responsive even dragging my 220# around. Put this in my 03 xr70 with the 26 mikuni and fit great no problems seems well made.

Great engine, stomps the yx125 and the yx140 I weigh almost 240 and this thing pulls me no clutch slippage (six plate clutch) easy access to the top end with the o ring setup fit perfectly into a crf50 style frame although my skid plate (bbr) didn't match up to the head, you have to custom mount the oil cooler which isn't hard. The only thing I recommend is having your rear wheel bullet proof it tore my ten inch wheel apart. As far as speed goes I'm right around 55-60mph running a 16 and 37 tooth pattern. Overall a great engine!

This engine is great!!! I put it in my bike, and immediately noticed a ton more power! It blows all my buddies bikes out of the water! Thanks T Bolt!