Classic 350 S owners love customization and modification. It’s an attractive platform for personalization, thanks to the bike’s simple design and large aftermarket support. But there is a split of opinion on whether modifications make much difference to the bike or if they are mainly cosmetic. For sound, common mods are an exhaust system, upgrades to the seat for comfort, and various styling changes. Debate rages over which changes represent the best value for money, and whether some of the bike's perceived performance or comfort shortcomings can be addressed. There are those who say that extensive mods defeat the purpose of buying a retro styled bike, and others who see it as part of the ownership experience. This is a big selling point for potential buyers, as they want to know the bike’s potential for customization.