Unlock the true performance of your 2025–2026 Indian Challenger 108 with custom ECU tuning from Lukos Engineering.

This particular Indian Challenger equipped with the 108 cubic inch engine delivered 101.95 WHP and 160.66 WTQ in stock form. After custom tuning, output increased to 111.86 WHP and 172.52 WTQ. While the peak gains are impressive on paper, the real transformation is in how the bike rides across the entire rev range.

Our calibration completely changed the character of the bike. The engine no longer falls flat or dies off at 5250 RPM, and instead continues to pull cleanly and consistently. The result is stronger power delivery throughout the rev range, improved ride-ability and a far more responsive motorcycle on the road.

At Lukos Engineering, we do not use generic files or one-size-fits-all flashes. Every tune is developed with a custom approach, focusing on real-world performance, smoothness and reliability. Whether the bike is stock or fitted with supporting modifications, we calibrate it to suit the exact setup.

Benefits of our custom Indian Challenger 108 tuning include:

• Increased horsepower and torque
• Stronger pull throughout the full rev range
• Eliminates the power drop-off around 5250 RPM
• Improved throttle response and rideability
• Smoother, more consistent power delivery
• Custom calibration tailored to the individual bike

We focus on delivering results that are felt every time you ride, not just numbers on a dyno graph. For riders looking to get more from their 2025–2026 Indian Challenger 108, Lukos Engineering provides bespoke tuning designed for performance, drivability and reliability.