Description
Upgrade the driving experience of your 2025-2026 Kia K4 with the STILLEN TruPedal Throttle Response Controller, engineered to reduce electronic throttle lag and provide faster, more responsive acceleration. In modern vehicles like the Kia K4, throttle lag can make acceleration feel delayed and disconnected. That hesitation is associated with conservative electronic throttle control systems designed to prioritize efficiency, safety, and smooth operation rather than immediate throttle response.
But you didn't buy your Kia K4 to feel slow.
Unlike older mechanical throttle setups, today's drive-by-wire systems can introduce a frustrating pause between accelerator pedal input and vehicle response. While these electronic systems offer safety and fuel-economy benefits, they can reduce the direct throttle response that performance-minded drivers demand.
The STILLEN TruPedal is engineered to eliminate throttle delay and deliver more immediate acceleration the moment your foot hits the gas. This precision-tuned throttle controller optimizes signal transmission between your accelerator pedal and engine, helping provide a quicker and more direct throttle response.
No lag. No delay. Just pure, responsive power.
Whether you're merging onto the highway, accelerating from a stop, overtaking, or enjoying spirited driving, TruPedal is designed to transform the throttle response of your Kia K4 without requiring engine modifications or complicated tuning.
Rediscover what driving your K4 was meant to feel like — instant, intuitive, and powerful.
Fitment
Kia K4: 2025-2026
The STILLEN TruPedal Throttle Response Controller is designed for 2025-2026 Kia K4 models equipped with compatible electronic drive-by-wire throttle systems.
Please verify compatibility with your specific Kia K4 model and configuration before ordering.
Features & Benefits
- Improved Throttle Response: Reduces accelerator pedal and throttle lag while enhancing acceleration for a faster, more immediate response.
- Customization: Provides 4 distinct preset driving modes, not including the stock setting, with 7 fine-tuning options per mode for a total of 28 adjustable settings to dial in the throttle response of your Kia K4 to your specific needs.
- Race Mode: Delivers maximum throttle responsiveness for an aggressive and adrenaline-focused driving experience.
- Sport Mode: Provides dynamic acceleration for everyday spirited driving and overtaking.
- City Mode: Provides smooth and controlled throttle response for stop-and-go traffic.
- Eco Mode: Provides an efficiency-focused throttle response when you want to save fuel.
- Valet Mode: Significantly reduces throttle performance for controlled and slow acceleration, making it ideal when someone else is behind the wheel.
- Built-In Immobilizer Security: Uses Bluetooth authorization to immobilize the throttle until your authorized smartphone is present, doubling as a security device and helping ensure your vehicle stays where it belongs.
- Wireless Convenience: Adjust settings directly on your smartphone using the supplied app for convenient and unrestricted access to throttle-response adjustments.
- Memory Function: Automatically saves your last-used settings for added convenience.
- Vehicle-Specific Calibration: Features a built-in setup function that individually optimizes all available modes for your Kia K4.
- Plug-and-Play Installation: Requires no specialized tools or coding and can be installed in 15 minutes or less.
- 5-Year Warranty: Made in Germany with a focus on quality and safety for complete peace of mind.
- Satisfaction Guarantee: Includes a 30-day risk-free guarantee if you aren't satisfied with your new driving experience.
- California Sales Restriction: Not for sale in California.
How STILLEN TruPedal Works
The STILLEN TruPedal throttle response controller is designed to optimize the electronic signal between the accelerator pedal and engine of your Kia K4. By adjusting throttle-response characteristics, TruPedal helps reduce the hesitation associated with modern drive-by-wire systems and provides a more immediate response to accelerator input.
TruPedal does not require engine modifications or complicated ECU tuning. Instead, it provides customizable control over throttle response through multiple driving modes and fine-tuning settings.
With 4 preset driving modes, excluding the stock setting, and 7 fine-tuning options for each mode, you have 28 total throttle-response settings. Choose Race Mode for maximum responsiveness, Sport Mode for dynamic acceleration, City Mode for smooth and controlled stop-and-go driving, or Eco Mode when you want an efficiency-focused throttle response.
Built-In Security and Smartphone Control
The STILLEN TruPedal combines throttle-response customization with convenient smartphone functionality. Its built-in Bluetooth authorization system can immobilize the throttle until your authorized smartphone is present, allowing TruPedal to double as an additional security device.
You can adjust settings directly from your smartphone using the supplied app, providing convenient access to throttle-response adjustments. The memory function automatically saves your last-used settings for added convenience.
Vehicle-Specific Calibration
TruPedal features a built-in setup function that individually optimizes all available modes for your Kia K4. This vehicle-specific calibration helps configure the controller according to the throttle characteristics of your vehicle.
Plug-and-Play Installation
The STILLEN TruPedal is designed for a straightforward plug-and-play installation without specialized tools, coding, or complicated modifications. Installation can be completed in 15 minutes or less, allowing you to quickly upgrade the throttle response of your Kia K4.
With 28 customizable settings, Race, Sport, City, and Eco modes, Valet Mode, smartphone control, Bluetooth-based immobilizer security, memory functionality, vehicle-specific calibration, a 5-year warranty, and a 30-day satisfaction guarantee, the STILLEN TruPedal for 2025-2026 Kia K4 provides a convenient way to make throttle response faster, more immediate, and more intuitive.
