BMS BMW N54 JB4 Speed Limit Defeat Wires for 135i and 335i
Unlock your BMW N54’s true potential with the Burger Motorsports JB4 Speed Limit Defeat Wires. Designed for JB4 G5 board users on BMW 135i and 335i models, this simple add-on allows the JB4 to remove the factory speed limiter for top speed derestriction. Perfect for drivers seeking a speed limiter delete, speed limit defeat, Vmax delete, or top speed limiter removal on N54-powered BMWs running the JB4.
Part number: E-N54-JB4UG-SLD
Why choose this JB4 Speed Limiter Delete
- Purpose-built by Burger Motorsports for the N54 JB4 G5 board
- Enables JB4 to remove the factory top speed limiter on compatible setups
- Ideal for BMW 135i and 335i owners looking for N54 speed limiter removal
- Proven on our own Nforcd cars and by happy customers who wanted full derestriction when used as intended
Requirements
- JB4 with G5 board is required
- BMS DATA cable or JB4 Connect Kit (Rev. 3) is required
- Not required if the vehicle is also equipped with a BMS flash
Compatibility
Compatible with N54 JB4 systems using the G5 board, typically fitted to BMW 135i and 335i models running the N54 engine and JB4. If you are unsure, please use our free compatibility check before ordering.
Compatibility Check
We verify fitment prior to dispatch. Add your registration number for UK vehicles or the last 7 digits of your VIN at checkout and we will confirm compatibility for your BMW 135i or 335i N54 JB4 setup.
Installation and Support
For professional installation, we recommend booking fitting with Nforcd in Warwickshire. Request a quote via Sales@nforcd.com. Our team has used this product extensively and can guide you on best practice for JB4 speed limiter defeat on N54 platforms.
Manufacturer and Warranty
Manufacturer: Burger Motorsports / Burger Tuning (BMS)
Warranty: BMS do not offer warranty on this item.
Important Safety Notice
Operating a vehicle at high speed involves extreme risk, including the risk of serious injury or death, and should only be attempted by professional drivers in a closed environment. Use is subject to the terms and conditions posted by BMS.
Key Search Terms
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