This R&G Mirror Wideners are designed to fit model years Ducati Monster 821 2014 2015 2016 2017 2018. This Mirror Wideners set contains one M8 x 1.25 right-hand thread Mirror Widener and one M8 x 1.25 left-hand thread Mirror Widener designed to both lift your mirrors and move them further outwards for better visibility clearance.
eBay