136'' or 144''

[bert]

I have an apex rtx with mpi stage 3 and l want to stretched because no traction with 121''
136'' or 144'' for drag race on hard pack snow ??

 

[rx1 fern]

i went from a 121 to a 136 ,and if i were to do it again i would go 144 for drag racing and better ride also.i have an 04 rx1 with a powderlites turbo kit.i also put on a 2inch track cut down which is a finger track.it still rides nicer than the 121 but you will get better traction with a 144.

 

[ProstockBenji]

144"