i meant the black exhausts

 

hks hipower with silencers = similar power band without silencers (ask gernby...he did some tests with this), drone is not gone but it's a night and day difference inside...outside sounds almost exactly the same

imo the best sounding axleback period

 

Unless they changed something, the HKS HiPower doesn't come with the silencer inserts, but they are easily added. You only have to drill 2 holes.