1999-2006 Gmc Sierra Extended Cab
1999-2006 Chevrolet Silverado Extended Cab
Note: This will also fit 2007 Old Classic Body Style. If you have the 2007 Extended Cab, please check to see if you have the new or old body style. If unsure, please contact us.
Hole cutouts:
Popular subs customers use for this box:
Our sub boxes are built by us! CNC precision cut and assembled by hand. We guarantee our sub box will not fall apart.
Our competitors sell cheap pre-fab sub boxes that can't match or beat the strength and sound of our speaker boxes. You will not be disappointed with our sub box.
100% ENCRYPTED CHECKOUT
Using our GeoTrust SSL.
All major credit & debit cards accepted
CUSTOMER SUPPORT
Got a question? Look no further.
1 (443) 345-1537
TRUSTPAY
100% Payment Protection.
Easy Return Policy
FREE SHIPPING
Free Shipping for Orders over $299.00
for US48 states
CELEBRATING 16YRS
#1 car audio store
online since 2006