My also owning duke 390 so i am sharing my ownest review My suggestion swap your exhaust with stock exhaust with catalytic converter it will maintain reliability and change coolant because as it was standing for long time and oil too.Check wether your bike has any engine oil drinking issue because it was standing for long so piston ring might gave up u can check by seeing oil by oil window or reving bike in neutral if it realeses the with white smoke then the bike has engine drinking issues tire best are Michelin
Expert examining my KTM Adventure 390: ruclips.net/video/sLvTdUGiM-M/видео.html
My also owning duke 390 so i am sharing my ownest review
My suggestion swap your exhaust with stock exhaust with catalytic converter it will maintain reliability and change coolant because as it was standing for long time and oil too.Check wether your bike has any engine oil drinking issue because it was standing for long so piston ring might gave up u can check by seeing oil by oil window or reving bike in neutral if it realeses the with white smoke then the bike has engine drinking issues tire best are Michelin
Thanks Jaimin