The Effect Of The Addition Of Db Killer On The Noise Of Yamaha Vixion 150cc Racing Motorcycle: Pengaruh Penambahan Db Killer Pada Knalpot Racing Motor Yamaha Vixion 150cc Terhadap Kebisingan. PELS [Internet]. 2023 July 14 [cited 2026 Nov. 3];4. Available from: https://pels.umsida.ac.id/index.php/PELS/article/view/1396