170cc kit is in the house, Pic, comparison to stock grom cyclinder

I received my BrianS 170cc kit this afternoon. Kit looks very well made. I took some pic with a stock cylinder for comparison. The kit will not be installed until I get my port/polished head back from Brian and also when I get my second Grom June 15.

Enjoy the pictures.
Cylinder comparison








The piston is a work of art






Warranty notice, same as with most performance equipment sales