A single-mass flywheel is one of those mods people misunderstand because they keep chasing dyno numbers instead of response. It won't add horsepower. It will make the engine change speed faster, which is why it feels so alive on track. But if your car spends more time in traffic than at apexes, the dual-mass might still be the smarter part. #ThreePieceUS #cars #manualtransmission #trackbuild #carfacts #drivetrain #autocross #trackday