DOC #CERT-293C-6948-8B13
19.09.2026
Performance Report
ECU Chiptuning — Stage 1
Document Date
19.09.2026
Harley Davidson 1250 Night Rod V Rod Sportster
2021 1250 sportster s 121HP Petrol
Original
121HP
125 Nm
Stage 1
129HP
133 Nm
+8 HP / +7% +8 Nm / +6%
Estimated Power and Torque Curve
Customer
Chassis
Date
Signature
Stamp
NOTICE: This document represents estimated values based on database information. It is not valid as official certification without the original handwritten signature and physical stamp of the authorized technician. Performance values may vary based on vehicle condition, fuel quality and operating environment.