865 Bonneville Speedmaster 55hp Stage 1 tuning

The Triumph Bonneville 865 Bonneville Speedmaster 55hp produces 55 hp and 66 Nm as standard. The YASTUNING Stage 1 remap file takes it to 61 hp and 72 Nm, a gain of +6 hp and +6 Nm. The file is checksum-corrected and reviewed by an experienced calibrator within factory component tolerances.