Rockford Fosgate Polaris RANGER Rear Speaker Add on Harness (Gen 1) RFRNGR RSW16 MotoTote and it comes with enough RCB CA X3 and it comes with enough dielectric grease to keep water out of every connection You're so close to a full cab enclosure for your PRO XP 4 MODEL 2015 2016 2017 2018 2019 2020 2021 MIDSIZE 570 1 — — — — — — — CREW 570 4 1 ✔ ✔ ✔ — — — — CREW 570 6 1 ✔ ✔ ✔ — — — — CREW XP 900 1 ✔ ✔ ✔ — — — — CREW XP 1000 EPS 1 — — ✔ ✔ 2 — — — CREW DIESEL 1 ✔ ✔ ✔ — — — — FULL SIZE XP 900 1 ✔ ✔ ✔ — — — — FULL SIZE XP 1000 EPS 1 — — ✔ — — — — FULL SIZE DIESEL 1 ✔ ✔ ✔ — — — — FULL SIZE DIESEL HST DELUXE 1 ✔ ✔ ✔ — — — — FULL SIZE RXR 1 ✔ ✔ ✔ — — — — FULL SIZE 500 1 — — — — — — — FULL SIZE 570 1 ✔ ✔ ✔ — — — — FULL SIZE EV 1 — — — — — — — FULL SIZE EV LI ION 1 — — — — — — — 1 Compatible with Polaris heater & defrost option Rear speaker harness