I believe they are 4 inch. -----Original Message----- From: 6pack-bounces at autox.team.net [mailto:6pack-bounces at autox.team.net] On Behalf Of Bruce Moxon Sent: Friday, October 31, 2008 7:11 PM To: 6pack at autox.team.net Subject: [6pack] Speaker Size What is the standard size speaker for the kidneys in a TR6/250? Bruce