What compression piston are you running and what brand?

[BM@Ronayers]

What compresson piston are you running and what motor work do you have done? What is your cylinder bore?

[m0t0xk1d]

sparks piston(cp) 14:1 76mm with everything else sparks in the motor

[XBLASTERRACERX]

Full TC National stage 2= 14:1 ,not sure what brand, 299cc bore.