Ignitions and Electrical› Wiring Components

Sky High Car Audio

4 Gauge OFC Big 3 Upgrade Kit

$60.49

SKU: SH-BIG34G-OFC

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Sky High Car Audio 4 Gauge OFC Big 3 Upgrade Kit is designed to enhance your vehicle's electrical system. This kit improves power flow, reduces voltage drop, and ensures efficient operation of high-performance car audio systems. It is essential for reinforcing alternator, chassis, and battery connections to provide stable voltage and peak system efficiency.
Show original supplier description
The Sky High Car Audio 4 Gauge OFC Big 3 Upgrade Kit is engineered to maximize the conductivity and durability of your vehicle's electrical system. This comprehensive kit is crucial for upgrading and reinforcing the connections between your alternator, chassis, and battery. By ensuring a stable and efficient power flow, it prevents voltage drops and allows your high-performance car audio system to operate at its peak potential. The kit includes 12 feet of 4 Gauge Oxygen-Free Copper (OFC) power wire, provided in three 4-foot runs to facilitate essential Big 3 upgrades. The wire features an ultra-flexible jacket for easy routing and resistance to wear. For convenience and adjustability, only one end of each wire is pre-terminated with a copper ring terminal, allowing for custom shortening if needed.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandSky High Car Audio
Part NumberSH-BIG34G-OFC
CategoryIgnitions and Electrical

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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