Arrma 223S Grom Assembled Oil Filled Differential (30T) (Brushless)

Differential Overview:

Arrma Grom Assembled Oil Filled Differential. These are pre-assembled replacements intended for the Granite Grom, Mojave Grom and Typhon Grom vehicles. Package includes two oil filled, pre-assembled 30T differentials and four bearings.

This product was added to our catalog on August 16, 2024

• Arrma Granite Grom
• Arrma Mojave Grom
• Arrma Typhon Grom

Shawn Lesko Verified Owner Monday, Apr 21 2025 (5 months ago) Arrma 223S Grom Assembled Oil Filled Differential (30T) (Brushless) These have been strong. They are advertised as oil filled. I traded out to a different oil weight right away and noticed they weren’t totally full (common for factory assembled stuff). I was a bit disappointed that there is no o-ring seal. Keeping oil in the diff is dependent upon torquing the plastic cap onto the aluminum housing and as such I expect slow leak over time. Troy Simmons Verified Owner Saturday, Nov 9 2024 (11 months ago) Arrma 223S Grom Assembled Oil Filled Differential (30T) (Brushless) A must up grade for your grom if you’re going brushless. Marcellus Beckman Verified Owner Tuesday, Sep 10 2024 (about a year ago) Arrma 223S Grom Assembled Oil Filled Differential (30T) (Brushless) they’re great for my arrma grom Mojave but after a weeks worth of use I lost front right drive on my 4 wheel drive train View all reviews