Under $50

Gear set, differential (output gears (2)/ spider gears (3))/ differential output shafts (2)/ 1.5x6mm pin (3)/ 1.5x8mm pin (2)

Gear set, differential (output gears (2)/ spider gears (4)/ 16x23.5x.5mm TW (2))

Gear set, differential (output gears (2)/ spider gears (4)/ spider gear shaft (2)/ output shaft (2)/ 2.5X13.8 pin (2))

Gear set, differential (spider gears (4), spider gear shaft (2))

Gear set, differential, metal (output gears (2)/ spider gears (4)/ ring gear, 35T (1)/ 2x14.8mm pin (1))

Gear set, metal (for 2070, 2075 servos)

Gear set, metal (for 2085, 2085X servos)

Gear set, rear differential (output gears (2)/ spider gears (4)) (#8581 required to build complete differential)

Gear set, transmission (includes 18T, 25T input gears, 13T idler gear (steel), 35T output gear, M3x13.75 screw pin)

Gear set, transmission, metal (includes 18T, 30T input gears, 36T output gear, 2x9.8 pins (5))

Gear set, two-speed (2nd speed gear, 29T/ input gear, 17T steel)

Gear shaft, fixed/ driveshaft adapter (requires #8950X or 8996X steel constant-velocity driveshafts and #8984 transmission output gear)

Gear shaft, primary (1)

Gear, 10-T pinion (32-p) (steel) (fits 3mm shaft)/ set screw

Gear, 10-T pinion / set screw

Gear, 11-T pinion (0.8 metric pitch, compatible with 32-pitch) (fits 5mm shaft)/ set screw

Gear, 11-T pinion (32-p) (steel) (fits 3mm shaft)/ set screw

Gear, 12-T pinion (48-pitch) (fits 3mm shaft)/ set screw

Gear, 12-T pinion (1.0 metric pitch) (fits 5mm shaft)/ set screw (for use only with steel spur gears)

Gear, 13-T pinion (0.8 metric pitch, compatible with 32-pitch) (fits 5mm shaft)/ set screw

Gear, 13-T pinion (1.0 metric pitch) (fits 5mm shaft)/ set screw (for use only with steel spur gears)

Gear, 14-T pinion (48-pitch) (fits 3mm shaft)/ set screw

Gear, 14-T pinion (0.8 metric pitch, compatible with 32-pitch) (hardened steel) (fits 5mm shaft)/ set screw

Gear, 14-T pinion (1.0 metric pitch) (fits 5mm shaft)/ set screw (for use only with steel spur gears)

Gear, 14-T pinion / set screw

Gear, 15-T pinion (1.0 metric pitch) (fits 5mm shaft)/ set screw (for use only with steel spur gears)

Gear, 15-T pinion (48 pitch, 2.3mm shaft)/ set screw

Gear, 15-T pinion (machined) (1.0 metric pitch) (fits 5mm shaft)/ set screw (for use only with steel spur gears)

Gear, 16-T pinion (1.0 metric pitch) (fits 5mm shaft)/ set screw (for use only with steel spur gears)

Gear, 16-T pinion (48-pitch) / set screw

Gear, 17-T pinion (0.8 metric pitch, compatible with 32-pitch) (fits 5mm shaft)/ set screw

Gear, 17-T pinion (1.0 metric pitch) (fits 5mm shaft)/ set screw (for use only with steel spur gears)

Gear, 18-T pinion (0.8 metric pitch, compatible with 32-pitch) (hardened steel) (fits 5mm shaft)/ set screw

Gear, 18-T pinion (1.0 metric pitch) (fits 5mm shaft)/ set screw (for use only with steel spur gears)

Gear, 18-T pinion (48-pitch) / set screw

Gear, 18-T pinion (48-pitch, 2.3mm shaft)/ set screw

Gear, 18-T pinion (machined) (1.0 metric pitch) (fits 5mm shaft)/ set screw (for use only with steel spur gears)

Gear, 19-T pinion (48-pitch) / set screw

Gear, 1st speed 32T/ input gear 14T

Gear, 1st speed, 43T

Gear, 20-T pinion (0.8 metric pitch, compatible with 32-pitch) (fits 5mm shaft)/ set screw

Gear, 20-T pinion (1.0 metric pitch) (fits 5mm shaft)/ set screw (for use only with steel spur gears)

Gear, 21-T pinion (48-pitch) / set screw