XS Power BIG3XP Kit
Many in-stock orders ship within 1-2 business days, but timing varies by item. Custom, built-to-order, oversized, special-order and supplier-direct products may need extra processing time. Free shipping applies to qualifying orders over $99 in the contiguous US. Approved returns may be subject to a restocking fee.
Most products are covered by the manufacturer's warranty against defects. Damage from over-powering or improper installation isn't covered — we'll help coordinate any valid claim.
Tell us your vehicle, subwoofers and electrical setup and our team will help you match the right gear. Reach out before you buy.
Ready to unlock your charging system's full potential? The XS Power BIG3XP Kit contains premium big 3 upgrade wiring engineered specifically to complement XS Power batteries and high-demand car audio systems. Every factory charging cable in your vehicle is undersized for serious amplifier loads, and this amp wiring kit corrects that from the ground up.
High-Current Wiring for Serious Builds
The BIG3XP Kit uses OFC power cable and heavy-gauge terminations to minimize resistance in your alternator-to-battery-to-chassis circuit. With lower resistance comes lower voltage drop, tighter amp performance, and a charging system that can actually keep pace with aggressive audio setups. Pair it with any XS Power battery and you will hear the difference from the first track — quality high current power wire truly matters.
Authorized XS Power dealer at JS Ultimate Sounds. Free shipping on orders $99+.
PROP 65 WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. Wash hands after handling.
For more information, visit www.P65Warnings.ca.gov
