Bosch Super 4 spark plugs

[speedcrave]

anybody have tried using this plugs?? how much does it cost? just thinking and considering of using it on my gze.....

or anybody can recommend a good plugs for gze...not the performance or racing plugs that cost rm200++...too costly...

 

[rollaGT]

well brother, if u use performance engine u shpuld use a performance spark plug. or otherwise use back an ordinaru engine. like F spec.

 

[bretbaby]

i got 1 set..just use it for 5 hours...sell it 2 u rm50 if u want...

 

[LevinTE27]

watch up.... high compression u need focusing firing. tats what performance plug design for.
wide firing only good for low compression.
later ur piston crack u also dunno what happen hahaha