yep, They slot in real easy with a few mm clearance. Once bolted they do not move. Im pleased with em. Not really a bit of kit to get excited about like a bit of bling for example but certainly knocks off the "boom boom" of the race cans. Funny thing is today I took mine out as I wanted to have full sound today. Just to make the car drivers pull over and get outer my way on the M3 this morning. DC |