Roboracer

I'm buying a new underhead for my HPI Nitro MT2 (T-15 engine) and I want to ask if it's hard to put it in? Do I need to worry about anything when I take the cooling head of and change the underhead?

Frost_

My Feedback: (1)

You mean the plug-button/head-button?

slim-jim

Dont use a ball hex driver to remove the bolts i did and the ball came off and stayed in the bolt head.