changing 153 on nytro mtx boosted

[lowmark]

Is there a good 153 replacement for a boosted nytro?? I heard a 156 2" works well but is there other solutions for more traction and stock skid?? I do not want to extend rails.

 

[Srxspec]

Camoplast Challenger Extreme 2.25 #9985

 

[lowmark]

Thanks SRX , Not sure if this would be any better than stock, looking for a stiff one for up to 19 lbs. this year. Anyone try the challenger extreme #9974 2.5 156???