The SSV Works UNPHASED-7 is an 11-speaker factory audio upgrade for 4-seat Polaris RZR Pro R 4 Ultimate models and the other 4-seat Ultimate trims that came from Polaris with factory Rockford Fosgate audio. It replaces the factory speakers with two tweeters and eight SSV V6 6.5-inch full-range speakers, adds a 10-inch subwoofer in a rear-seat enclosure, and runs from the factory 1500-watt, 8-channel amplifier and 10-inch Ride Command display.
SSV Works says the factory setup only uses about half of that amplifier: one subwoofer channel sits unused, the front doors have no speakers and the factory speakers hold the system back. This RZR Pro R 4 audio upgrade puts that unused amplifier capacity to work without adding an aftermarket amp, so you get a louder RZR Pro R 4 sound system with more bass while the factory Ride Command integration stays in place.
For buyers comparing RZR Pro R 4 speakers, this is the Polaris RZR Pro R 4 factory audio upgrade and RZR Pro R 4 Ultimate speaker upgrade at the top of SSV's UNPHASED line, and it also serves as the RZR Pro XP 4 speaker upgrade and RZR Pro S 4 speaker upgrade on 2027 Ultimate trims. It is a Rockford Fosgate speaker upgrade for the RZR and a Ride Command speaker upgrade, not a replacement head unit; the SSV Works UNPHASED-7 is the largest SSV Works RZR Pro R factory audio kit for 4-seat machines.
The included rear-seat RZR Pro R 4 subwoofer plugs into the amplifier's unused second subwoofer channel, which SSV rates at 400 watts at 4 ohms. The factory front subwoofer stays in place and keeps its own channel.
Key Features
- 11 speakers total per SSV Works: two tweeters, eight 6.5-inch full-range speakers and one 10-inch subwoofer
- Runs on the factory 1500-watt, 8-channel Rockford Fosgate amplifier; no aftermarket amplifier is added
- Plug-and-play into the factory audio wiring harnesses; SSV says the RGB harness is the only wiring that needs to be run
- Rear-seat 10-inch subwoofer enclosure uses the factory amp's unused second subwoofer channel (400 watts at 4 ohms)
- Factory front subwoofer stays in place on its own channel
- Keeps the factory amplifier, factory Ride Command integration and factory functionality
- SSV enclosures and SSV speakers are covered by the SSV Works Limited Lifetime Warranty
Built To Solve: Underpowered Factory Audio In The RZR Pro R 4 Ultimate
- Factory speakers that run out of clarity and volume at speed
- A factory amplifier channel for a second subwoofer that is never used
- No speakers in the front doors from the factory
- Wanting more output without replacing the factory amp or Ride Command
Best For: 4-Seat RZR Pro R 4 Ultimate Owners With Factory Audio
- Owners of 2026-2027 RZR Pro R 4 Ultimate and 2027 Pro R 4 Boost Ultimate or Boost Ultra models
- Owners of 2027 RZR Pro XP 4 Ultimate and Pro S 4 Ultimate models with factory audio
- Riders who want every seat covered and double the factory subwoofer channels working
- Not for 2-seat models or trims without factory audio; 2-seat Ultimate owners should look at the UNPHASED-5 or UNPHASED-6 kit
Specifications
- Speakers: 11 total (2 tweeters, 8 x 6.5-inch full-range, 1 x 10-inch subwoofer)
- SSV Works V6 6.5-inch full-range speaker: 160W max / 80W RMS, 4 ohm
- Subwoofer: 10-inch, in a rear-seat enclosure, on the factory amplifier's second subwoofer channel (400 watts at 4 ohms)
- Power: factory Polaris 1500-watt, 8-channel amplifier (not included)
- Source: factory 10-inch Ride Command display (not included)
- Wiring: plug-and-play into factory audio wiring harnesses; RGB harness is the only run
- Manufacturer Part Number: 260-RZ6-UNPHZD7-V
What's In The Box
Per SSV Works, this kit includes:
- (2) Tweeters
- (8) SSV Works V6 6.5-inch full-range speakers
- (1) 10-inch subwoofer
- Rear-seat subwoofer enclosure
- SSV speaker enclosures for the kit's speakers
- RGB harness
Not included: an amplifier, a radio, head unit or display, or audio wiring harnesses. The kit plugs into the factory Polaris amplifier, factory audio harnesses and factory 10-inch Ride Command that are already in the machine, and it will not work without them. A separate RGB controller is not listed in SSV's kit contents.
Fitment
Fits 4-seat models only: 2026-2027 Polaris RZR Pro R 4 Ultimate, 2027 RZR Pro R 4 Boost Ultimate, 2027 RZR Pro R 4 Boost Ultra, 2027 RZR Pro XP 4 Ultimate and 2027 RZR Pro S 4 Ultimate.
This kit requires factory Polaris audio: the factory Rockford Fosgate 1500-watt, 8-channel amplifier, factory audio wiring harnesses and the factory 10-inch Ride Command display. Trims that did not come with factory audio from Polaris are not compatible. SSV Works lists this kit as not compatible with any 2-seat model, any 2025 model, Sport or Premium trims, or 2026 Pro XP 4 and Pro S 4 models. Confirm your year, trim and seat count before ordering; fitment is not guaranteed on unlisted applications.
FAQ
Does this kit include an amplifier or a radio?
No. UNPHASED-7 is a speaker and subwoofer upgrade that runs on the factory Polaris 1500-watt, 8-channel amplifier and the factory 10-inch Ride Command display. Neither is included, and the kit requires both.
Will it work on a RZR Pro R 4 without factory audio?
No. SSV Works states this kit uses the factory amplifier and wiring harness, so it is only compatible with trims that came from Polaris with factory audio.
Which models does the 11-speaker kit fit?
2026-2027 RZR Pro R 4 Ultimate, 2027 Pro R 4 Boost Ultimate and Boost Ultra, 2027 Pro XP 4 Ultimate and 2027 Pro S 4 Ultimate, all with factory audio.
Does it fit a 2-seat RZR Pro R?
No. SSV Works lists the 11-speaker kit as 4-seat only. 2-seat Ultimate owners with factory audio should look at the UNPHASED-5 6-speaker or UNPHASED-6 8-speaker kit.
How does it install?
SSV Works designed it to plug into the factory audio wiring harnesses, with the RGB harness as the only wiring to run. Review SSV's instructions or contact us with install questions before you start.
How is UNPHASED-7 different from UNPHASED-5 and UNPHASED-6?
UNPHASED-5 uses two tweeters and four 6.5-inch speakers, and UNPHASED-6 uses two tweeters and six; both keep the factory front subwoofer only. UNPHASED-7 uses two tweeters and eight 6.5-inch speakers and adds the rear-seat 10-inch subwoofer, and it is 4-seat only.
Why SSV Works
SSV Works has built purpose-made UTV audio since 2006, engineering weatherproof speakers, enclosures and complete systems for the dust, water and vibration of off-road riding rather than adapting car or marine gear.
Finish Your 2026-2027 RZR Pro R 4 Factory Audio Upgrade
Confirm your machine is a 4-seat Ultimate trim with factory Rockford Fosgate audio and the 10-inch Ride Command before ordering this 11-speaker kit. If you ride a 2-seat model, choose the UNPHASED-5 or UNPHASED-6 kit instead. Order from Dunes 2 Dezert SXS.
