Upgrade Your Entire Drivetrain — Not Just One Weak Point
If you’re still running stock diffs on your Mini Maxx / Mini XRT, you already know where the failure points are. This is a full drivetrain solution — not a patch fix.
Cobra Racing’s complete kit replaces your front, rear, and center differentials + center driveshaft with a precision-matched system built for power, durability, and efficiency.
Key Features & Performance Gains
Full Helical Gear Design (Front & Rear)
- Smoother engagement vs straight-cut gears
- Reduced noise + improved power delivery
- Better load distribution across gear teeth
High-Strength Internal Gear Structure
- Thicker gear profile for increased torque handling
- Tighter mesh = less drivetrain slop & power loss
- Built to handle brushless setups and hard bashing
Complete System Upgrade
- Front, rear, and center diffs engineered to work together
- Eliminates mismatch between upgraded and stock components
Pre-Assembled for Direct Install
- Drop-in ready design
- No guesswork, no complicated setup
Result:
More efficient power transfer, stronger drivetrain, and a truck that stays planted under load.
Why Upgrade to Cobra Racing?
- Designed as a complete drivetrain solution, not individual parts
- Handles high torque + aggressive driving without flex or failure
- Reduces drivetrain loss → more power to the wheels
- Built for both bashing and high-speed runs
What’s Included
- Front Complete Differential (Helical Gear)
- Rear Complete Differential (Helical Gear)
- Center Differential
- Center Driveshaft
- Front & Rear Pinion Gears (Helical)
- Hardware required for a full and complete install.
Specifications
- Front & Rear Gears: 13T / 37T
- Center Differential: 13T / 47T
- Gear Module: 0.8
Vehicle Compatibility
Traxxas Mini Platform:
- Traxxas Mini Maxx (107154-1)
- Traxxas Mini XRT (108076-1)
- Traxxas Mini Slash
Compatibility Note (Mini Slash):
This kit is listed as compatible with the Traxxas Mini Slash. All included components are a direct fit for the Mini Slash except for the center driveshaft, which is not compatible with that model. The front, rear, and center differentials will fit properly.
⚠️ Installation Note
-
Differentials come dry and do not include oil.
Recommended setup:
- Front / Rear: ~50K diff oil
- Center: ~500K diff oil
Proper oil tuning = optimal performance.
Bottom Line
This isn’t just an upgrade — it’s a complete drivetrain transformation.
No weak links. No mismatched parts. Just pure, efficient power delivery built to handle whatever you throw at it.

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