RE: Sig Extra 300XS ARF
Not sure but my Saito 180 protrudes a little from the cowl with side mounting on my Hanger 9 Cap 232 1/4 scale. Are you sure you want to power the Sig Extra 300 with a 120? If the Extra 300 is the arf it may be way under powered. My son has been flying his with an OS 160 FX 2s and it's ot over powered.