Some mods like exhausts or tuners boost power. But weight limits against going overboard for street use.
From hundreds for cosmetics to thousands for extensive engine work, customization expenses pile up fast.
Non-dealer modifications can void factory warranties and leave you paying for broken parts down the road.
Insurers may deny claims if they deem significant custom work as increasing your bike's risk profile.
Extensive mods limit your bike's appeal to other buyers down the road compared to a stock example.
Advanced mechanical work requires experience. Botched DIY jobs create problems or safety issues.
Flashy customized bikes attract more attention from thieves looking to steal your pricey parts.