(SSST003) This design leaves space for the subwoofer. If you don't have a sub installed, how much space is left next to the slide? Kevin Schultz 27 April 2020 14:04 Updated Follow The width of the JKU Cargo Slide (SSST003) is 35.4 inches. To get the correct measurement of the leftover cargo space you will have to measure the cargo space of your JK and subtract the 35.4 inches from your measurement. Front Runner This question is about: Jeep Wrangler JKU Cargo Slide - by Front Runner (SSST003) Comments 0 comments Article is closed for comments.