Cobra Racing 12mm-17mm Hex Hub Adapter & Extender for Traxxas 1/10 Cars (See compatibility list below)
Level-Up your Traxxas 1/10 scale RC Car with the Cobra Racing 12mm-17mm Hex Hub Adapter. Designed to provide enhanced stability and improved handling, this high-quality hub extender is ideal for bashing, racing, and custom builds. Made from durable 7075-T6 aluminum and featuring a sleek mirror-chrome finish with a contrasting midnight-black nut, it combines strength, style, and functionality.
Each adapter also features a 6mm offset on each side, widening your RC car’s stance and providing additional stability, especially beneficial in tight turns and at high speeds. This part is also ideal for users looking to convert their Slash into a Backslash or anyone that wants to turn their rig into Monster Status. By adding this upgrade, you would have essentially turned your 1/10 into a 1/8th, giving your model added versatility.
Key Features
- Premium 7075-T6 Aluminum: Known for its high strength and corrosion resistance, 7075-T6 aluminum ensures these extenders can withstand tough conditions.
- 6mm Offset: With an added 6mm offset on each side, your RC model gains a wider stance for enhanced control and balance.
- Ideal for Conversions: Perfect for converting your Slash into a Backslash or giving your RC truck a monster truck transformation, essentially turning your 1/10 model to a 1/8 scale.
- Stylish Mirror-Chrome: With a mirror-chrome body and midnight-black nut, this extender adds a show-room look to your RC setup.
- Easy Installation: Quickly converts 12mm hex hubs to 17mm, allowing you to fit larger wheels and tires for improved performance.
Compatibility
The 12mm-17mm Hex Hub Adapter & Extender is compatible with the following Traxxas 1/10 models:
- Traxxas Slash 1/10 (2WD, 4WD, VXL)
- Traxxas Stampede 1/10 (2WD, 4WD, VXL)
- Traxxas Rustler 1/10 (2WD, 4WD, VXL)
- Traxxas Bandit 1/10 (2WD, VXL)
- Traxxas Hoss 1/10
- Traxxas Rally 1/10
Package Contents
- 4 x 12mm-17mm Hex Hub Extenders (Mirror-Chrome with a black nut)
- Locking nut hardware set – Includes all necessary screws for secure attachment
Why Choose Cobra Racing’s Hex Hub Extender?
- Increased Versatility: Expands your vehicle’s wheel options, allowing for larger, more aggressive tires.
- Durable Build: 7075-T6 aluminum construction ensures long-lasting performance.
- Enhanced Performance: Provides a wider stance for better handling and control.
- Stylish Upgrade: Mirror-chrome and black accents offer a unique, custom look.
- Conversion Potential: Easily adapt your model to a larger scale, enabling custom builds like the Backslash or monster truck conversion.

Verified owner Anonymous (verified owner) –
Put these on my stampede VXL 4×4
Verified owner james dupuis (verified owner) –
The product was good , just did not fit the tires from upgrade racing.
Store manager cobraracingtech (store manager) –
Hi James –
Glad you liked the adapter. These are 12mm to 17mm adapters. So if they didn’t fit on the Upgrade RC tires, just double check that those tires are 17mm. If they are the standard 12mm tires, then these won’t work as they are suppose to convert your truck from 12mm to 17mm.
Any questions, please don’t hesitate to reach out to us.
Best,
CR Support