





JWL 30T Front Differential with 12T Input Gear for ARRMA GROM Series
SKU JCSGR3012F
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 with 12T input pinion, powder metallurgy (MIM metal injection molding)
- 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
Core Advantages
- Complete front differential assembly: Includes input pinion gear ¨C ready to bolt in
- MIM gear technology: Superior strength and wear resistance over stock
- Aluminum housing: Eliminates flex and improves gear mesh consistency
- Direct fit for GROM series: No modification needed
- Chromium steel outdrives: Reduce wear and improve driveshaft life
Usage Notes
- Run gently for first battery pack to allow gears to bed in
- Use 3000cSt silicone oil; re-lubricate every 10-15 runs
- Inspect input gear wear after heavy use ¨C replace if teeth show sign of rounding
- Apply thread locker to input gear grub screw
Compatible Vehicle Models
Fits ARRMA GROM 1/18 series (front differential position)
- ARRMA Granite GROM (front)
- ARRMA Typhon GROM (front)
- ARRMA Mojave GROM (front)
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.