JWL 39T Full Metal Front/Rear Differential with 13T Input Spiral Gear for ARRMA 8S Series
$999.00
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JWL 39T Full Metal Front/Rear Differential with 13T Input Spiral Gear for ARRMA 8S Series
$999.00
Material Specifications
- Main gear: 39T with 13T input pinion (spiral cut), chromium steel, precision CNC machined
- Differential housing: 7075-T6 aerospace grade aluminum alloy
- Outdrive cups: Hardened chromium steel
- Fasteners: High-strength alloy steel screws
- Supporting bearings: Matched outdrive bearings included
- Internal gears: Spiral cut for heavy-duty 8S applications
Core Advantages
- Built for 8S brutality: Chromium steel spiral gears withstand extreme torque from 1/5 scale 8S systems
- Superior mesh: Spiral cut reduces noise and increases tooth contact area
- Easy maintenance: Split housing design for quick oil changes and inspection
- Complete set: Includes input gear, bearings, housing, and screws ¨C fully assembled ready to install
- Drop-in fitment: Direct replacement for ARRMA 1/5 scale 8S differentials
Usage Notes
- Mandatory break-in: Run at low speed for 2-3 minutes before full 8S throttle
- Use 100K-500K cSt differential oil for 1/5 scale; re-lubricate every 8-12 heavy runs
- Frequently inspect for gear wear and screw loosening due to high vibration
- Ensure proper shim alignment to prevent premature failure
Compatible Vehicle Models
Fits ARRMA 1/5 8S BLX series (front or rear differential)
- ARRMA Kraton 8S BLX
- ARRMA Outcast 8S BLX