ZF-40K Amplifier
Zeroflex
$2,999.00
🔥 UNLEASH THE BEAST – ZEROFLEX ZF-40K | 40,000W RMS 🔥
Power. Precision. Pure Carnage.
Introducing the Zeroflex ZF-40K, the ultimate heavy hitter for those who aren’t just in the game — they ARE the game. Packing a mind-melting 40,000 watts RMS, this monster amp isn’t for the faint-hearted. It's built for bass junkies, SPL kings, and anyone mad enough to chase true wall-flexing, door-popping, eardrum-tickling power.
🔊 FEATURES THAT SLAP HARDER THAN YOUR EX’S TEXT AT 3AM 🔊
Massive 40,000W RMS @ 1 Ohm – Real numbers. No fluff. Enough power to blow your hair back and your trunk lid off.
Designed for Demons – Built with hardcore SPL in mind, this amp thrives on extreme builds and isn’t afraid of the dark side.
Full Protection Circuitry – Over-voltage, under-voltage, thermal, and short protection, because power means nothing without control.
Solid Alloy Heatsink + Advanced Cooling – Keeps things chill when your music’s melting faces.
If your idea of “loud” is scaring people three blocks away…
If your build makes the clouds part when you hit 20Hz…
If "too much power" isn’t in your vocabulary…
Then the ZF-40K was made for you.
BACKED BY ZEROFLEX. PUSHED BY PASSION.
This is not your average amp. It’s a statement. A weapon. A challenge to the laws of physics. Built by people who live and breathe car audio. Born from the streets of NZ’s loudest scenes and battle-tested by the boldest.
RMS 1 Ohm: 1 CH x 40000W
RMS 2 Ohm: 1 CH x 25500W
RMS 4 Ohm: 1 CH x 16700W
THD: <1%
Frequency Response: 10HZ - 10KHZ
HPF: 15HZ - 80HZ
LPF: 40hz - 10KHZ
Bass Boost: 12DB
Dimensions LxWxH: 1055x208x64MM
NOTE:
Connect the 12V power supply lead only after all the leads have been connected
Be sure to connect the ground lead of unit securely to a metal point of car. A loose connection may cause malfunction of the amplifier.
Be sure to connect the remote control lead of the head unit to the amplifier's remote terminal, A loose connection may cause malfunction of the amplifier.
Place The fuse inline with the power supply lead as close as possible to the Battery.
ABOUT US
🔊 Sonic Kustomz: Precision. Power. Performance. Your One-Stop Shop for Elite Car Audio, Custom Power, and Next-Level Fabrication
At Sonic Kustomz, we go way beyond the basics. We're driven by a passion for innovation, sound, and style — delivering custom car audio installs that are built not only to be heard, but to make a statement.
Whether you're dialing in a clean daily setup or building a full-blown demo vehicle, we tailor every system to your ride, your goals, and your sound signature — using only the best brands in the game, including Morel Audio, Zapco, Rainbow, and Zeroflex.
🔊 Custom Installs & Fabrication That Set You Apart
We specialize in:
🎯 Full custom audio installs
🔊 Handcrafted subwoofer enclosures (sealed, ported, 4th & 6th order)
💡 Fully illuminated enclosures and builds — RGB, acrylic, plexi, underglow, and more
🎚️ Custom bass knobs with LED options
🎛️ Custom RCA distribution blocks
🔥 Custom fuse holders in 2, 4, 6, and 8 output configurations
🪫 Battery delete Boxes — clean up your bay while maintaining system integrity
Every detail is designed in-house for maximum function, clean aesthetics, and performance under pressure.
🔋 Custom LTO Battery Banks – Built for Serious Power
Sound this powerful needs an equally serious power source — and we’ve got it. At Sonic Kustomz, we build custom LTO (Lithium Titanate Oxide) battery banks using premium Yinlong 35Ah cells — trusted for their:
⚡ Ultra-fast charging (fully charges in under 10 minutes)
🔋 20,000+ cycle life
💪 Massive discharge capability (easily supports 15,000W+ systems)
🧊 Extreme temp range (-40°C to +60°C)
🔧 We Build to Fit Your System:
✅ 2-bank (12-cell) systems for 12V–16V builds
✅ 4-bank (24-cell) setups for even greater capacity
✅ Custom configurations available — 3-bank, 5-bank, or more, with options for:
Voltage (12V to 16V+)
Capacity (35Ah, 40Ah, 45Ah cells)
Orientation, space constraints, and power goals
Each bank includes:
High-grade plates / busbars
Pre-installed active balancer
Heavy-duty protective case
Fully pre-tested, balanced, and ready for install
Whether you’re building a high-power car audio system, mobile power unit, or off-grid energy bank — we’ll design the LTO solution that fits your exact needs.
🛋️ Home Audio (Coming Soon):
We’re bringing our audio expertise indoors with high-end home audio systems featuring Morel and JL Audio — perfect for home theaters, audiophile listening, and whole-home sound.
🚗 Performance Upgrades (Coming Soon):
Expect Max Load air suspension systems, adjustable ride kits, and more — giving you total control over stance, comfort, and handling.
💯 Built Different. Installed Right. Powered to Perform.
At Sonic Kustomz, we combine technical know-how with custom creativity to bring your vision to life — loud, clean, and head-turning from every angle.
🔧 We offer:
Premium car audio systems
Custom LTO battery banks (35Ah, 40Ah, 45Ah)
Illuminated builds & custom fabrication
Custom made bass knobs, RCA distro blocks, fuse holders, and more
Coming soon: Home audio & performance parts
🎯 Ride Loud. Live Clear. Perform Clean.
Only at Sonic Kustomz.
#SonicKustomz #CustomCarAudio #LTOBatteryBanks #YinlongCells #CustomEnclosures #IlluminatedBuilds #Zeroflex #MorelAudio #ZapcoAudio #RainbowAudio #BassKnobs #RCADistroBlocks #FuseHolders #BatteryDelete #BuiltToOrder #HomeAudioComingSoon #AirSuspensionComingSoon #PerformanceParts #FabricationMasters
