Upgrade Your Traxxas 1/10 4ร4 with the Cobra Racing Blue Traxxas Complete Differential Set
Take your Traxxas 1/10 4ร4 to the next level with the Cobra Racing Blue Aluminum Differential Set. This complete set, featuring the Cobra Racing Helical Differentials and premium aluminum housings, is hand-assembled in the USA for smoother power delivery, enhanced handling, and unmatched durability โ all while looking stunning on your RC vehicle.
Looking for a different color? These differentials also come in Red and Green to match your style.
Key Features of the Cobra Racing Blue (Complete) Differential Set
High-Grade 7075-T6 Aluminum Housing
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Crafted from premium 7075-T6 aluminum for maximum strength
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Durable enough for high-speed bashing and off-road abuse
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Lightweight yet robust, engineered to fit precisely in Traxxas 1/10 4ร4 chassis
Cobra Racing Helical Differentials
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Pre-installed helical cut gears made of hardened steel
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Provides smoother operation and more efficient power transfer
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Reduces gear slippage and minimizes noise under high loads
Complete Front and Rear Set
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Upgrade both front and rear differentials at once
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Balanced handling and improved traction for every ride
Enhanced Compatibility
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Designed for a wide range of Traxxas 1/10 4ร4 vehicles (see compatibility list below)
Performance and Longevity
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Combines aluminum housing with precision-engineered helical cut gears
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Reduces maintenance while ensuring long-term durability
Why Upgrade to the Cobra Racing Blue Complete Differential?
Durability
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Aluminum housing withstands intense RC driving, whether on-track or off-road
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Built to last for years of aggressive bashing
Performance
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Helical cut gears deliver smoother, quieter, and more efficient power
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Improves acceleration, cornering, and overall handling
Complete Upgrade
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Balanced front and rear set ensures optimal driving performance
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Pairs perfectly with the Cobra Racing Aluminum Shock Towers for a complete, eye-catching upgrade
Compatibility
The Cobra Racing Blue Traxxas Complete Differential Set is compatible with the following models:
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Traxxas Slash 4ร4 / Slash 4ร4 VXL / Ultimate / Platinum
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Traxxas Rustler 4ร4 VXL
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Traxxas Stampede 4ร4 / VXL
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Traxxas Hoss 4ร4 / VXL
- Telluride 4×4
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Traxxas XO-1
- Rally 4×4
Also pairs seamlessly with the Cobra Racing Center Differential for full drivetrain upgrades.
Whatโs Included in the Package
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Front Differential Assembly with aluminum housing (fully assembled)
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Rear Differential Assembly with aluminum housing (fully assembled)
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Pre-installed Cobra Racing Helical Differentials
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High-quality screws for installation
โ ๏ธ Important Notes
Grease / Maintenance
This differential set comes fully assembled, but the external grease is not pre-applied. Internal gears are pre-filled with grease, but for optimal performance:
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Open and top off or replace with your preferred differential oil
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Ensures smooth operation and long-term durability
Aluminum Housing Fit
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Manufactured to precise tolerances for a snug, exact fit
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When reassembling, press both halves firmly together until a distinct click confirms closure
Break-In Period (Highly Recommended)
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Run your vehicle at half power or on 2S batteries for 1โ2 full cycles before stepping up to 3S
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Proper break-in ensures the internal components seat correctly and maximizes longevity
Shimming
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Proper shimming may be required for correct operation depending on your setup
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Incorrect shimming can cause excessive wear or output gear failure
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Always check fitment and adjust as needed before running
Guide to shimming your differential

Verified owner michael b. (verified owner) –
Installed these in my Stampede 3s vxl. Fit and finish is top notch. It included new bearings and a new set of hardware. Makes a super cool sound at high speeds like zszsssssszzzszz
Verified owner Hershel Irwin (verified owner) –
Happy with the purchase
Verified owner mark clark (verified owner) –
I think the transmission is great