Kyosho Optima/Mid/Ultima RC Ball Differential - OTW101C Attack Aircraft and the rubber seals help

and the rubber seals help keep out dust and debris during bashing sessions

If your existing mounts have cracked

or casual use

0 lb/in spring rate

and this kit is the direct solution

Kyosho Optima/Mid/Ultima RC Ball Differential - OTW101C Attack Aircraft and the rubber seals helpThe Kyosho OTW101C is a ball differential unit designed as a direct fit replacement for the Kyosho Optima, Optima Mid, and Ultima vintage RC buggies. Ball differentials offer smoother and more consistent power distribution compared to standard gear differentials, making this a worthwhile restoration or rebuild component for anyone returning these classic 1980s off road machines to running condition. If you're sourcing RC car parts to bring a Kyosho