Now you can mount a 21" Basket you just about any sub! 

21" BASKET ADAPTER

$45.00Price
  • Mounting pattern
    1/4" thick
    3.5" Inside Diameter
    7" Outside Diameter
    6 x 5" counter sunk for mounting
    6 x 6.1" tapped 1/4-20 threads (for 21" Basket)