#A857 - HEAVY-DUTY 13 TOOTH FINAL GEAR (P1x13T) (NITRO RS4 MT) Discontinued Genuine HPI spare part for ensured quality, correct maintenance and easy repairs. See below for kit compatibility.
#86084 DRIVE GEAR 32 TOOTH (1M)
#86329 HEAVY-DUTY FINAL GEAR SET (P1x36T/P1x14T)
#A855 DIFF FINAL GEAR SET (P1x38T/P1x13T)