PK21 Focal 4 AWG Performance Series Power Amplifier Wiring Kit - Ready

In this review the PK21 - Focal 4 AWG Performance Series Power Amplifier Wiring Kit is evaluated for installers and enthusiasts who need a complete, ready-to-fit wiring solution for car amplifiers. The bottom line: this kit is aimed at anyone fitting a compatible FPP power amplifier and the single biggest reason to buy is its all-in-one convenience and high-flexibility power cable that simplifies a clean, reliable installation. The review highlights durability, connector choices, and what to expect in a full amplifier wiring package.

Key Features

• All-in-one solution: The kit includes power, ground, remote, RCA and speaker cables plus an accessory pack so installers have everything needed for a single-amplifier system.
• High-flexibility power cable: The 4AWG soft-touch cable with multiple braiding is easier to route in tight engine bays and helps maintain a neat installation.
• Gold-plated fuse box: The mounted fuse holder with an 80A fuse offers secure protection and corrosion resistance at the battery end.
• RCA cable convenience: The 5m PR5 RCA cable with two 90 degree plugs and two straight plugs reduces strain and improves access behind head units or dash panels.
• Generous speaker and remote lengths: A 10m speaker cable and 5m remote lead provide flexibility for long runs and varied amplifier placements.

Who It's For

The PK21 kit is best for car audio installers, DIY enthusiasts, and anyone who plans to run a single FPP power amplifier (models 1000, 2100, 5300, 4100). It is most useful when a tidy, reliable installation is a priority and when installers prefer to avoid sourcing individual cables and connectors separately.

Those who should look elsewhere include users needing multi-amplifier setups, extremely high-current systems beyond an 80A fuse, or custom-length cables different from the included sizes; in those cases custom or larger-gauge components may be more appropriate.

Pros & Cons

Pros

• Comprehensive kit that covers power, ground, remote, RCA and speaker wiring for a single amplifier.
• Soft-touch, high-flexibility 4AWG power cable makes routing and handling significantly easier than stiff alternatives.
• Gold-plated mounted fuse box with 80A fuse provides dependable circuit protection and improved contact longevity.
• RCA cables with 90 degree connectors reduce installation strain and improve fit in tight spaces.

Cons

• Includes an 80A fuse which may be limiting for users planning higher current draws or multi-amp systems.
• Ground cable length at 1 m may require additional grounding planning in some larger vehicles.

Specifications

Power cable	4.9m x 21mm2 (16ft x 4AWG), soft-touch high-flexibility
Fuse box	Gold-plated mounted box with 80A fuse
Ground cable	1 m (4AWG)
Remote cable	5 m (16.4ft)
RCA cable	5 m PR5 with 2 x 90 plugs and 2 straight plugs
Speaker cable	10 m (32.8ft)
Recommended use	FPP power amplifier models 1000 / 2100 / 5300 / 4100

Our Verdict

The PK21 Focal 4 AWG Performance Series kit is a practical, value-minded choice for anyone installing a single compatible FPP amplifier who wants a neat, reliable wiring job without sourcing parts separately. It offers quality connectors, a flexible power lead, and long RCA and speaker runs, making it well suited to most standard car audio installations where an 80A fused feed and the included cable lengths meet system needs.

Frequently Asked Questions

Is this kit compatible with other amplifiers?
It is designed and recommended for FPP power amplifier models listed, but the included cables and terminals are broadly compatible with many single-amplifier installations if the 80A fuse and cable sizes meet the amplifier requirements.

Can the fuse rating be changed?
The kit ships with an 80A fuse in a gold-plated mount; installers can replace the fuse with a different rating if appropriate for their amplifier and wiring plan, following proper safety guidelines.

Are cable lengths sufficient for most vehicles?
The kit provides 4.9m power, 1m ground, 5m remote, 5m RCA and 10m speaker cable, which cover most compact to mid-size vehicle layouts but may require adjustments for large or custom installations.