K5 Optima Store

So far so good! Ez install.

Instructions were clear Fitted in under 10 minutes Raises the seat height perfectly The wife loves the extra height Recommend this product A+

They work great!! The original plugs are trash on 21 Kia k5 1. 6t after I replaced w these plugs my car gets so much better gas!!

Sounds amazing not bad to install took around 2 hours with basic tools.

Solidly built and very easy to install. The car feels more planted in very hard cornering.