Cobra Racing
  • Home
  • SHOP
  • About Us
  • Contact Us
Login / Register
Sign inCreate an Account

Lost your password?

2 items $71.90
Menu
Cobra Racing
2 items $71.90
Home For Traxxas Traxxas 1/10 Scale Parts & Upgrades Spiral-Cut Differential Upgrade Kit for Traxxas 4×4 Models
CR Chrome Differential Housing For Traxxas 4x4 Slash, Rustler, Stampede
CR Chrome Differential Housing for Traxxas Slash & Rustler 4x4 $79.95
Back to products
2WD Blue Aluminum Traxxas Knuckles Set (COMPLETE) for Traxxas SLASH
CR-BL 2WD Aluminum Traxxas Knuckles Set for Traxxas SLASH $34.95
“Black Aluminum Motor Mount for 4×4 LCG Traxxas Slash, Rustler” has been added to your cart. View cart
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Click to enlarge
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede

Spiral-Cut Differential Upgrade Kit for Traxxas 4×4 Models

Rated 5.00 out of 5 based on 2 customer ratings
(2 customer reviews)

$99.95

45 Items sold in last 11 days
Your order qualifies for free shipping!

In stock

Buy with
SKU: CR-SpiralCut-Diffs-F+R-FULLSET#38 Categories: All, For Traxxas, Traxxas 1/10 Scale Parts & Upgrades Tag: Traxxas Gears; Spurs; Differentials and Drivetrain Brand: Cobra Racing
Share:
  • Description
  • Additional information
  • Reviews (2)
  • Q & A
Description

Enhance the performance and reliability of your Traxxas 4×4 RC vehicles with our premium Helical Differential Upgrade Kit. Designed to fit models like the Traxxas Slash, Rustler, and Stampede 4×4, this kit includes front and rear differentials with spiral cut (helical) gears, along with matching pinions.

Advantages of Spiral-Cut (Helical) Gears

Helical gears offer numerous advantages over traditional straight-cut gears:

  • Smoother Operation: The angled teeth of helical gears engage more gradually, resulting in quieter and smoother performance, which is especially beneficial in high-speed RC applications.
  • Increased Durability: Helical gears have a wider surface area on each tooth, distributing the load more evenly. This design makes them stronger and less likely to break under strain, ensuring long-lasting durability even under intense use.
  • Enhanced Efficiency: By reducing sliding friction, helical gears transmit power more efficiently, leading to less heat generation and improved overall drivetrain performance.

Why Choose Our Spiral-Cut Differential Upgrade Kit?

Upgrading to our Spiral-Cut Differential Upgrade Kit provides several benefits for your Traxxas 4×4 RC cars:

  • Compatibility: This kit is compatible with a range of Traxxas 4×4 models, including the Slash, Rustler, and Stampede, making it a versatile choice for RC enthusiasts.
  • Superior Performance: Experience smoother acceleration and reduced drivetrain stress, thanks to the quiet and efficient operation of helical gears.
  • Complete Set: The kit includes both front and rear differentials with matching pinions, and a full set of ABEC5 high performance rubber sealed bearings, ensuring a comprehensive upgrade for your vehicle.

Easy Installation

Designed for straightforward installation, our Spiral-Cut Differential Upgrade Kit includes all the necessary components and hardware. Whether you’re a novice or an experienced RC hobbyist, you’ll appreciate the ease with which you can enhance your vehicle’s performance.

Conclusion

Upgrade your Traxxas 4×4 RC vehicles with our Spiral- Differential Upgrade Kit and enjoy smoother, quieter, and more durable performance. Perfect for models like the Slash, Rustler, and Stampede, this kit is a must-have for any serious RC enthusiast. Transform your RC experience today with the power and reliability of helical gears.

 

⚠️ Please Note:  The differentials are pre-filled with grease, but for optimal performance and long-term durability, we recommend opening them up and either topping off the grease or replacing it with your preferred differential oil. 

Break-In Period (Highly Recommended):
Once fully installed, it is highly recommended to perform a low-power break-in period. Run the vehicle at half power or on 2S for one to two full battery cycles before stepping up to 3S power. This helps ensure proper seating of internal components and extends the life of the differential.

Important Installation Note:
Depending on your specific setup, proper shimming may be required for correct differential operation. Failing to shim the differential correctly—when needed—can result in excessive wear and potential output gear failure. Always check fitment and adjust as necessary before running.

Guide to shimming your differential

 

Additional information
Weight 5 oz
Dimensions 9 × 1 × 7 in
Brand

Cobra Racing

Vehicle Brand

For Traxxas

Type

Differential

Color

Black

Compatible Vehicle Type

Buggy, Monster Truck, Roller, Scale, Short Course Truck, Truck, Truggy/Stadium Truck

Compatible Models

Traxxas Slash, Rustler, Stampede, Hoss 4×4

Compatible Fuel Type

Electric, Nitro & Glow Fuel

MPN

CR-SpiralCut-Diffs-F+R-FULLSET

Age Level

12-16 Years, 17 Years & Up

Compatible Scale

1:10

Condition

New

Compatibility

Ford F-150 Raptor, Ford Fiesta ST Rally, Rally VXL, Slash 4×4, Slash 4×4 VXL, Traxxas Rustler 4×4, Traxxas Slash 4×4, Traxxas Slash Platinum, Traxxas Slash Ultimate, Traxxas Stampede 4×4 Unassembled Kit, TraxxaS Stampede 4×4 VXL

Reviews (2)

2 reviews for Spiral-Cut Differential Upgrade Kit for Traxxas 4×4 Models

5.0
Based on 2 reviews
5 star
100
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%
  1. Verified owner Chris (verified owner) – May 10, 2025

    Rated 5 out of 5

    Had to replace one of the first set due to the shaft snapping at the driveshaft lock-pin. Hopefully was just a fluke, was out of warranty but was given a discount for future products and will use in the future.

    0
    0
    (1) (2)
  2. Verified owner Alan (verified owner) – January 30, 2025

    Rated 5 out of 5

    These gears are solid and quiet

    0
    0
    (0) (0)

Only logged in customers who have purchased this product may leave a review.

Q & A

Q & A

Ask a question
Spiral-Cut Differential Upgrade Kit for Traxxas 4x4 Models Spiral-Cut Differential Upgrade Kit for Traxxas 4x4 Models
Your question
* Question is required
Name
* Name is required
Email
* Email is required
There are no questions yet
Add to WishlistRemove from Wishlist
Add to Wishlist

You may also like…

BLUE Aluminum Front or Rear differential fits Traxxas Slash Rustler Stampede 4x4
BLUE Aluminum Front or Rear differential fits Traxxas Slash Rustler Stampede 4x4
Add to cart

BLUE Aluminum Front or Rear differential fits Traxxas Slash Rustler Stampede 4×4

$23.95
Add to WishlistRemove from Wishlist
Add to Wishlist

Related products

Arrma 6S BLX Aluminum Turnbuckles (Camber, Toe & Drag Link Set) - Red
Arrma 6S BLX Aluminum Turnbuckles (Camber, Toe & Drag Link Set) - Red
Add to cart

Arrma 6S BLX Aluminum Turnbuckles (Camber, Toe & Drag Link Set)

Rated 5.00 out of 5
$34.95
Add to WishlistRemove from Wishlist
Add to Wishlist
CR Blue Aluminum Alloy TALL battery strap holder for Traxxas Slash 4x4 LCG 4WD
CR Blue Aluminum Alloy TALL battery strap holder for Traxxas Slash 4x4 LCG 4WD
Add to cart

CR Blue Aluminum Alloy TALL battery strap holder for Traxxas Slash 4×4 LCG 4WD

Rated 3.00 out of 5
$27.95
Add to WishlistRemove from Wishlist
Add to Wishlist
Add to cart

Black Aluminum Motor Mount for 4×4 LCG Traxxas Slash, Rustler

Rated 5.00 out of 5
$32.95
Add to WishlistRemove from Wishlist
Add to Wishlist
Red Aluminum Shock Towers for Arrma 6S BLX Front & Rear
Red Aluminum Shock Towers for Arrma 6S BLX Front & Rear
Add to cart

Red Aluminum Shock Towers for Arrma 6S BLX Front & Rear

$38.95
Add to WishlistRemove from Wishlist
Add to Wishlist
Cobra Racing Red Aluminum Front + Rear Differentials COMPLETE for Traxxas Slash Rustler 4x4
Cobra Racing Red Aluminum Front + Rear Differentials COMPLETE for Traxxas Slash Rustler 4x4
Add to cart

CR RD Aluminum Front + Rear Differentials COMPLETE for Traxxas Slash Rustler 4×4

Rated 5.00 out of 5
$149.50
Add to WishlistRemove from Wishlist
Add to Wishlist
Add to cart

Aluminum Clamping Servo Horn (Blue) 25T fits Traxxas Slash Rustler TRX4 Axial

$14.95
Add to WishlistRemove from Wishlist
Add to Wishlist
Add to cart

Traxxas Slash Rustler 4WD 54T Metal Spur Gear 32P with FULL clutch assembly 4×4

Rated 5.00 out of 5
$25.95
Add to WishlistRemove from Wishlist
Add to Wishlist
Fits Traxxas 4x4 Ultimate Slash Blue Aluminum Steering Block Hub Knuckle Axle Carrier
Fits Traxxas 4x4 Ultimate Slash Blue Aluminum Steering Block Hub Knuckle Axle Carrier
Add to cart

Ultimate Slash Knuckle Set 4×4 Blue (FRONT + REAR)

Rated 3.50 out of 5
$38.95
Add to WishlistRemove from Wishlist
Add to Wishlist

GET IN TOUCH

At Cobra Racing, we offer a wide range of premium RC car parts and upgrades designed to elevate your driving experience to new heights.

  • info@cobraracing.net
company info
  • Shop
  • About Us
  • Contact Us
  • Gift Card Balance
  • Affiliate Program
  • Shop Reviews
  • RC Blog
  • Track Order
Policy Info
  • Privacy Policy
  • Shipping Policy
  • Return Policy
  • Parts Warranty
  • Gift Card Policy
  • Terms & Conditions
NEWSLETTER

© 2026 Cobra Racing. All rights reserved

payments
  • Home
  • SHOP
  • About Us
  • Contact Us
  • Login / Register
Shopping cart
Close

LIMITED TIME OFFER!  FREE SHIPPING ON ALL ORDERS TO THE UNITED STATES!

Facebook
Spiral Cut (Helical) Differential Gears for Traxxas Slash, Rustler, Stampede

Spiral-Cut Differential Upgrade Kit for Traxxas 4×4 Models

Rated 5.00 out of 5
$99.95

In stock

Buy with
Manage Consent

This site uses cookies to enhance your web site experience. By continuing to browse or use this site, you are agreeing to our use of cookies.  See our cookie policy below.

Functional Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes. The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
  • Manage options
  • Manage services
  • Manage {vendor_count} vendors
  • Read more about these purposes
View preferences
  • {title}
  • {title}
  • {title}
Shop
2 items Cart
My account
Wishlist