STAGE 2 KTM 690 Ecu Reflash

Sharper response, smoother power, and real performance gains.

Our Stage 2 ECU Reflash unlocks the full potential of your KTM 690 single-cylinder LC4 engine, removing restrictive factory settings and optimizing fuel, ignition, and throttle control for maximum output and precision.

Technical Enhancements

• Full removal of speed, torque, and throttle restrictions

• Optimized fuel and ignition maps for improved combustion and throttle precision

• Throttle-by-wire recalibration for faster response and better modulation

• AFR (Air/Fuel Ratio) adjustment for performance exhausts and intake upgrades

• Revised torque and load maps for smoother power delivery and stronger midrange

• Cooling fan temperature optimization for better thermal management

Performance Gains (with exhaust and high-flow filter)

• +7 to +10 HP over stock configuration

• +8 to +11 Nm of torque gain, especially in midrange RPM

• Noticeably faster throttle response and improved rideability

Handheld System Features

• Direct flashing via OBD-II port  no ECU removal required

• Save and restore your original map anytime

• Compatible with all KTM 690 models (Duke / SMC / Enduro)

• Software updates and future map support included

This Stage 2 tune refines the 690’s power curve, eliminates flat spots, and delivers a smoother yet more aggressive throttle feel. Perfect for riders seeking a more responsive and powerful LC4 setup on track or off-road.