Factory machined boost ports

[Fabian]

http://www.aliexpress.com/product-g...e-cylinder-with-2-extra-solt-wholesalers.html

http://www.aliexpress.com/product-g...e-cylinder-with-3-extra-solt-wholesalers.html


and the billet style cylinder head


http://www.aliexpress.com/product-gs/244953172-performance-barrel-head-wholesalers.html


Now i hope they make those things for a 47mm bore?

 

[Old Bob]

That cylinder is some fairly rough looking work!

They don't show any dyno info giving the buyer any idea of what this mod does or doesn't do.