Replacement was a perfect drop-in fit for my short course truck, no shimming or filing needed to get the mesh right. Spins smooth and quiet on the bench, and it's holding up fine after a few full battery packs.
Lily★★★★★
My old diff gear was stripped, but this replacement dropped right in with no issues. The gear teeth mesh perfectly with the pinion, and it's held up well through a few packs on my short course truck.
Riley U.★★★★★
My 18-series monster truck was sitting on the shelf with a stripped diff gear, but this replacement fit perfectly and brought it back to life. The hardened steel teeth feel much more durable than the stock plastic ones.