Mustakim M, Gunawan S, Hartana DR. EXPERIMENTAL STUDY ON THE EFFECT OF IGNITION ANGLE VARIATIONS AND FUEL OCTANE NUMBER ON THE PERFORMANCE OF 110CC UNDERBONE MOTORCYCLES. Journal Technology of Civil, Electrical, Mechanical, Geology, Mining, and Urban Design [Internet]. 2026Apr.30 [cited 2026Jun.10];11(1):37-44. Available from: https://journal.itny.ac.id/index.php/krvtk/article/view/6268