JWL 30T 3000CST Front/Rear Differential for ARRMA GROM Series
SKU JCSGR30T
Review fitment and specifications below, then purchase this JWL upgrade through Amazon.
Purchases are completed securely on Amazon.
Specifications and fitment
Product details
Material Specifications
- Main gear: 30T, powder metallurgy (MIM metal injection molding) for high density and strength
- Differential housing: 7075-T6 aerospace grade aluminum alloy
- Outdrive cups: Hardened chromium steel
- Internal gears: Powder metallurgy steel
- Fasteners: High-strength alloy steel screws
- Differential oil: Pre-filled with 3000cSt silicone oil (or dry ¨C check your version)
Core Advantages
- MIM gear technology: Provides near-forged density and wear resistance, far superior to stock sintered or plastic gears
- Aluminum housing: Eliminates flex and gear misalignment common with stock plastic diffs
- Precision fitment: Direct upgrade for ARRMA GROM 1/18 scale models
- Ready to install: Pre-assembled with bearings and screws, saves time
- Smoother power delivery: Chromium steel outdrives reduce wear on driveshafts
Usage Notes
- No break-in required for MIM gears, but recommended to run gently for first battery pack
- Recommended oil: 3000cSt silicone oil; re-lubricate every 10-15 runs
- Check screw tightness after initial runs as housing may settle
- Ensure correct orientation when installing (front vs rear marked on housing)
Compatible Vehicle Models
Fits ARRMA GROM 1/18 series (front or rear differential)
- ARRMA Granite GROM
- ARRMA Typhon GROM
- ARRMA Mojave GROM
Fitment and product support
Confirm the fit before you hit it.
Compatibility is part of the product. Review the platform collection or contact JWL before ordering if your setup is unclear.