Description

TSP Ignition Kit for Yamaha YZ125 (2005–2021) & YZ125X (2005–2022)

Unlock next-level bolt-on performance with this TSP Ignition System, designed specifically for Yamaha YZ125 and YZ125X models from 2005 onward. Developed and tested in-house with the TSP Billet Head, this ignition delivers proven gains in rideability, throttle response, and top-end power.

Each ignition includes two pre-loaded custom TSP maps:

• Map 1: Full power for use with TSP head and performance exhaust

• Map 2: A de-tuned option for a softer and smoother power delivery.

This ignition is pre-programmed with TSP’s tried-and-tested ignition curves for maximum performance when used with a TSP billet head. While it may function with other aftermarket heads, we only recommend using it with a TSP Billet Head, as our mapping is optimized specifically for that combination. Using the ignition with a stock or non-TSP head may reduce performance or reliability and has not been tested.

NOTE: This setup is specified to run with the factory OEM spark plug – NGK BR-9EVX.

For riders seeking a complete performance upgrade package, this ignition is a key piece of the puzzle – designed to work in harmony with TSP’s high compression head. This ignition is also a part of the Yamaha YZ125 Power Kit for a full power upgrade!