RD-11 vs RD-22

[HS-YZ250]

I need to replace the 32-21 Compound Gear in one of my Rocky's. This is the one the motor directly drives.

Found these two auctions by the same seller. One is listed as an "RD-11" and the other "RD-22". The latter is a couple of dollars more, but they both use the same images, and they appear the same as the Rocky part (don't know what the Rocky part number is)

RD-11 - https://www.ebay.com/itm/RD-11-Idler-Gear-32-21-Tooth-Kyosho-Raider-Outlaw-Raider-Series/254805145254?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3Db349a016dc3141a08f5aba518587ffa3%26pid%3D100675%26rk%3D5%26rkt%3D15%26mehot%3Dnone%26sd%3D324427300113%26itm%3D254805145254%26pmt%3D0%26noa%3D1%26pg%3D2380057%26brand%3DKyosho&_trksid=p2380057.c100675.m4236&_trkparms=pageci%3A836a99c4-4fd2-11eb-9113-32e843a4f227%7Cparentrq%3Ad5d288111760ad355125ca9fffe8a21f%7Ciid%3A1

RD-22 - https://www.ebay.com/itm/RD-22-Idler-Gear-32-21-Tooth-Kyosho-Raider-Outlaw-Raider-Series/402630337593?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3Db349a016dc3141a08f5aba518587ffa3%26pid%3D100675%26rk%3D4%26rkt%3D15%26mehot%3Dnone%26sd%3D324427300113%26itm%3D402630337593%26pmt%3D0%26noa%3D1%26pg%3D2380057%26brand%3DKyosho&_trksid=p2380057.c100675.m4236&_trkparms=pageci%3A836a99c4-4fd2-11eb-9113-32e843a4f227%7Cparentrq%3Ad5d288111760ad355125ca9fffe8a21f%7Ciid%3A1


Just curious if either or both of these will work in the Rocky

[GoMachV]

RD-11 was the entire gear set, RD-22 was just a pair of idlers. Same idlers, just packaged differently. The seller has parted a set to sell them that way, and has thus just assigned his own part numbers. Neither are wrong, but RD-11 should be a whole set and RD-22 should be a pair of idlers.

[HS-YZ250]

Awesome! Thanks for the info!