The MadDad Whisper 2.5" Bolt-on axleback uses the same design features of it's bigger brother the MadDad 3" Catback. Utilizing the same in canister self resonated design, the Whisper has quickly earned it's reputation as one of the most charasmatic sounding exhausts without any drone at any rpm on wagon or sedan. The 2.5" Whisper catback is featured on SubieSport magainze's own Project WRX Wagon, where they combine the 2.5" Whisper axleback with a MadDad V2 downpipe and MadDad Velocity exhaust header.
