Description

TSP Power Kit Carb for Yamaha YZ125 (2006–2021) & YZ125X (2006–2022)

After over a decade of building and tuning high-performance 2-stroke engines, TSP developed their TSP Power Kits as the ultimate bolt-on upgrade – engineered from the ground up, not just pieced together from random parts. Every component in this kit is designed to work in harmony to deliver maximum performance with proven reliability.

This kit includes:

• TSP 2-Piece Billet Head – anodized in factory bronze
• TSP CDI Unit – pre-programmed with two ignition maps
• Handlebar-Mounted Map Switch
• Recommended Jetting Specs – included with every kit

Each map is developed in-house through dyno and real-world testing, ensuring optimal performance with your engine, head, and combustion chamber design.

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

High Compression: Slightly higher than stock and safe on 91-93 octane (pump premium) with proper jetting. It offers improved low to mid power and a stronger, more linear pull. Ideal for off-road, enduro, or MX riders wanting extra midrange torque.
Recommended for YZ125X models when used with a standard YZ125 power valve spring (Yamaha Part #90501-300A0).

Fitment:

• YZ125 (2006-2021)
• YZ125X (2006-2022)
  YZ125X requires installation of the standard YZ125 powervalve spring to match performance output.