A UTV, golf cart, or off-road build usually doesn't have a dedicated speaker cutout anywhere, which is exactly the problem Boss Audio's two powersports sound systems are built around. Both mount with straps and zip ties to whatever bar is actually on the vehicle, and both bring their own amplifier, no separate wiring to a receiver's power output required.
Key Takeaways
- The UTV4B ($269.99) is a single 24" sound bar unit with a built-in 350W amplifier and Bluetooth streaming.
- The UTV4BRGB ($269.99) is a 4" speaker and 1" tweeter system at the same price point, a different physical format than the single-bar UTV4B.
- Both mount using two heavy-duty straps with velcro plus two zip ties, fitting essentially any bar size rather than requiring a specific pipe diameter.
- Both include a built-in amplifier, meaning no separate amp purchase or wiring is required beyond power and ground to the unit itself.
- Neither requires a receiver, control happens directly via Bluetooth pairing to a phone.
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UTV4B: One Bar, Everything Included
At $269.99, the UTV4B is a single 24" sound bar (23.5"x7.5"x5", 7 lbs) with a 350W built-in amplifier and Bluetooth streaming, designed to mount to a UTV, golf cart, or RV bar with the included straps and zip ties. There's no cutout to measure or cut, no separate amp to wire, the entire system lives in one enclosure that straps onto whatever bar is already there.
UTV4BRGB: A Different Format, Same Core Idea
Also $269.99, the UTV4BRGB uses 4" speakers with 1" tweeters rather than a single bar enclosure, still with a built-in Class D amplifier and Bluetooth streaming, and the same strap-and-zip-tie universal mounting approach. The product name suggests RGB lighting, though the description we reviewed didn't explicitly confirm a lighting feature the way Boss Audio's dedicated RGB speaker and subwoofer listings do, confirm this specifically on the current listing if integrated lighting is a priority for your purchase rather than assuming it from the name alone.
Sound Bar vs. Separate Speakers: Which Format Fits Your Vehicle
The UTV4B's single-bar format means one mounting point and one unit to secure, generally simpler on a vehicle with just one convenient bar location. The UTV4BRGB's separate speaker-and-tweeter format allows spreading sound across two mounting points instead of one, potentially better stereo separation if your vehicle has two reasonable mounting locations spaced apart. Neither format is objectively better, it depends on what your specific roll cage or bar structure actually offers.
Why the Universal Mount Matters Here Specifically
Every other speaker mounting system covered on this site, Kicker's PSM clamp, the KMFC flat-mount tower speakers, Boss Audio's own MRWT40 and BM40AMPBT, specifies a particular pipe diameter range or a flat hardpoint requirement. These two UTV systems skip that constraint entirely, straps and zip ties adapt to essentially any bar shape or size within reason, which matters specifically for UTVs and off-road vehicles where roll cage dimensions vary widely between models and aftermarket cage upgrades.
Battery Draw: A Question Worth Asking Before Install
Both systems run their own built-in amplifier directly from the vehicle's 12V system, meaning they draw power whenever connected and powered on, independent of whether a separate stereo or amp circuit exists. On a UTV or golf cart with a smaller battery than a typical boat's marine battery bank, confirm the amp's actual current draw against your vehicle's electrical capacity, especially if you're already running other accessories off the same circuit, rather than assuming a self-contained sound system has no electrical footprint to plan around.
What You're Giving Up for That Flexibility
A strap-and-zip-tie mount is inherently less permanent and less vibration-resistant than a purpose-built clamp or bolted hardpoint mount. For a UTV or off-road vehicle that sees real impact and vibration, periodically checking strap tightness is a reasonable maintenance step, this isn't a mount-it-once-and-forget-it solution the way a properly torqued clamp mount can be.
Checking Strap Security the Right Way
A strap-and-zip-tie mount isn't inherently unreliable, but it does require actually checking it rather than assuming a first install holds indefinitely. After the first few outings on rough terrain, recheck both straps for tightness and inspect the zip ties for any stress cracking at the connection points. This takes under a minute and is the realistic maintenance tradeoff for a mount that adapts to any bar shape instead of requiring a measured, purpose-built clamp.
Honest Cons
Strap mounting requires periodic re-checking, especially on a vehicle that sees rough terrain, build this into your normal maintenance routine rather than assuming a one-time install is permanent.
The UTV4BRGB's actual RGB lighting capability isn't explicitly confirmed in what we reviewed, confirm this specifically before purchase if lighting is the deciding factor between this and the UTV4B.
Both rely on Bluetooth for control, there's no wired source option mentioned, confirm that fits your actual use case if you want a hardwired audio source instead.
Frequently Asked Questions
Do I need a separate amplifier for either of these?
No, both include a built-in amplifier, that's the core design of both products.
What bar sizes do these fit?
Both use heavy-duty straps and zip ties rather than a specific clamp diameter, fitting essentially any reasonably-sized bar rather than a narrow measured range.
Which one actually has RGB lighting?
The UTV4BRGB's name suggests it, but confirm directly on the current product listing before assuming, since the description we reviewed didn't explicitly detail a lighting feature.
Can I use these without a phone connected via Bluetooth?
Based on what we reviewed, Bluetooth is the primary control method for both, confirm wired input options directly if that matters for your build.
Can I run one of these alongside a separate receiver instead of relying on Bluetooth alone?
The UTV4B's aux-in port allows a wired connection from a separate source, giving you a fallback beyond Bluetooth if a paired phone isn't always practical for your use case.
Bottom Line
Both systems solve the same real problem, sound on a vehicle with no dedicated speaker location, bar, or amp wiring already in place, with a mount that adapts to the bar you actually have rather than requiring a specific pipe size. Confirm the RGB feature directly before choosing between the two if lighting matters to your decision, and confirm your vehicle's electrical capacity can support the built-in amplifier before committing to either.