




Couldn't load pickup availability
The practicality of the Toyota Highlander only magnifies with a rich sound system that offers striking sound clarity, high grade efficiency, and unmatched power: the Best Toyota Highlander Upgrade Package provides your everyday SUV with a one in a million sound system that ‘s guaranteed to check every box.
This package includes: a 6 x 9” 2-way coaxial speaker, the EXL-SQ6.9 - a 6.5" 2-way coaxial speaker, the EXL-SQ6.5 - a universal dash speaker fitted for most Toyota Models, the PRO-ST - an efficient 1800W 4-channel amplifier, the G1800.4D - and the easy-to-use AMPKIT4.
In the pursuit of perfection, the design team at DS18 is always looking to upgrade on the key factors that put us a grade above the industry standard: sensitivity, frequency ranges, surround materials, and power handling are among the most important factors in every piece of our equipment’s designs. The EXL-SQ line of audio equipment brings it all with materials that deliver impeccable sound quality and is built to last.
The PRO-ST is the best factory replacement speaker for some Subaru or Toyota Vehicles for it’s ease of use and quality increase from the factory speakers. The difference in quality between these speakers and the ones in your dashboard are night and day.
The G1800.4D amplifier fits just about anywhere, and supplies power with unmatched efficiency. We developed these amps with the customer in our minds and the enthusiasts in our hearts, so we can assure users they’re getting the best amp their money can buy. These amplifiers have a maximum output of 430W x 2CH at 4-ohms bridged, 230W x 4CH at 2-ohms, 150W x 4CH at 4-ohms: perfect power settings to supercharge the speakers included with this package.
Installation is made even easier with our AMPKIT 4: we put together everything you need in one convenient package so you can be just as efficient in setup as your new equipment is in action.
If you’re still having trouble, The experts at DS18 recommend using the 82-8148 Adapter: for replacing the 6” – 6.75’ speakers placed in the vehicle’s rear, and the 82-8149 Adapter: for replacing the 6 x 9” speakers placed in the front of the vehicle: these kits are modeled for select Toyota vehicles and allows for a direct size replacement of speakers without the need for cutting or modifying the vehicles door and side panels.
Order yours today!
Highlights
Great for






Order this package and upgrade your Toyota Highlander car audio systems today!
| 2x 6.9" 2-Way Coaxial Speaker with Fiber Glass Cone | EXL-SQ6.9 |
|---|---|
| 2x 6.5" 2-Way Coaxial Speaker with Fiber Glass Cone | EXL-SQ6.5 |
| 2x 1.9" Bullet Compression Tweeter | PRO-ST |
| 1x Full-Range Class D 4-Channel Amplifier | G1800.4D |
| 1x Advance 4-Gauge Installation Kit | AMPKIT4 |
| Nominal Diameter | 6.9" / 6.5" / 1" |
| Nominal Impedance | 3 Ohm / 4 Ohm |
| RMS Power Handling | 160W / 120W |
| MAX Power Handling | 560W / 400W |
| Frequency Response | 55Hz - 22KHz / 80Hz - 22KHz / 1KHz- 20KHz / 20Hz-20KHz |
| Sensitivity | 90dB |
| Magnet | Strontium |
| AES Power Handling | 50W |
| Program Power Handling | 100W |
| Peak Power Handling | 200W |
| Sensitivity (1w/1m) | 98 dB |
| Recommended Hi Pass Crossover | 4 KHz |
| Magnet Material | Neodymium |
| Number of Channels | 4 |
| Max Power | 1800W |
| 2 Ohms RMS Power | 4 x 230W |
| 4 Ohms RMS Power | 4 x 150W |
| 4 Ohms RMS Power Bridge | 2 x 430W |
| Speaker Impedance Range | 2 ohm St / 4 ohm Bridge |
| Signal-to-Noise Ratio | >90dB |
| THD | 0.01% |
Most products ship directly from our vendor warehouses or distributor network. Shipping times can vary depending on the brand, product size, availability, and destination.
Large or oversized items such as lift kits, wheels, tires, bumpers, exhaust systems, and audio enclosures may require additional handling time or freight shipping.
If there is ever an issue with availability, shipping cost, or delivery timing, we will contact you before moving forward with the order.
Returns may be accepted on most new, unused, unopened items within 30 days of delivery. Items must be in original packaging and in resellable condition.
Installed, used, damaged, missing-parts, electrical, special-order, clearance, or custom-built items may not be eligible for return.
Return shipping is normally the customer’s responsibility unless the return is due to our mistake, such as the wrong item being shipped.
Before sending anything back, please contact Kaos Offroad so we can review the order and provide return instructions. Returns sent without approval may be refused.
Some products are vehicle-specific. Please verify fitment before ordering. If you are unsure, contact us with your year, make, model, sub-model, and any relevant details before purchasing.
Original shipping charges, freight charges, and vendor restocking fees may be non-refundable depending on the item and supplier policy.






















