Description
Complete Dual Amplifier Installation Kit 4 AWG + 8 AWG Power, Two 16ft RCA Cables, Two Distribution Blocks, 30ft Speaker Wire, Maxi Fuse, 20ft Remote Wire. PC-OFC Throughout.
The Rockford Fosgate RFK4D is a complete dual amplifier installation kit everything required to install two amplifiers from a single main power run. The kit runs 4 AWG from the battery to the included distribution blocks, then steps down to 8 AWG for the individual amplifier power and ground runs. Two 16-foot twisted pair RCA cables, 30 feet of 16 AWG speaker wire, a Maxi fuse holder and fuse, and 20 feet of remote wire complete the package. All wire is full AWG specification, 100% PC-OFC.
Kit Contents
| Item |
Specification |
| Main power wire |
17 feet, 4 AWG PC-OFC (21.1mm², 1,862 strands) ✓ |
| Secondary power wire |
6 feet, 8 AWG PC-OFC (8.36mm², 735 strands) ✓ |
| Main ground wire |
3 feet, 4 AWG PC-OFC ✓ |
| Secondary ground wire |
6 feet, 8 AWG PC-OFC ✓ |
| Speaker wire |
30 feet, 16 AWG PC-OFC (1.31mm², 65 strands) ✓ |
| RCA cables |
2 × 16 feet twisted pair ✓ |
| Maxi fuse holder |
Included ✓ |
| Fuse |
100A ✓ (see note) |
| Distribution blocks |
2 × 4 AWG ✓ |
| Remote wire |
20 feet ✓ |
| Termination hardware |
Included ✓ (type TBC) |
Key Specifications
| Specification |
Detail |
| Part Number |
RFK4D |
| Application |
Dual amplifier ✓ |
| Main Wire Gauge |
4 AWG (21.1mm², 1,862 strands) ✓ |
| Secondary Wire Gauge |
8 AWG (8.36mm², 735 strands) ✓ |
| Speaker Wire |
16 AWG (1.31mm², 65 strands) ✓ |
| Conductor |
100% PC-OFC ✓ |
| RCA Cables |
2 × 16ft twisted pair ✓ |
| Distribution Blocks |
2 × 4 AWG ✓ |
| Remote Wire |
20 feet ✓ |
| Fuse Holder |
Maxi ✓ |
| Fuse Rating |
100A ✓ |
| Warranty |
Not specified |
How It Differs From Single-Amp Kits
| Feature |
RFK4 |
RFK8X |
RFK4D |
| Application |
Single amp |
Single amp |
Dual amp ✓ |
| Main gauge |
4 AWG |
8 AWG |
4 AWG ✓ |
| Secondary gauge |
— |
— |
8 AWG ✓ |
| Distribution blocks |
— |
— |
2× 4 AWG ✓ |
| RCA cables |
— |
1× 16ft |
2× 16ft ✓ |
| Speaker wire |
— |
30ft 16 AWG |
30ft 16 AWG ✓ |
| Remote wire |
TBC |
20ft |
20ft ✓ |
| Fuse holder |
Maxi |
AGU |
Maxi ✓ |
| Fuse |
100A |
40A |
100A ✓ |
FAQs
How does the dual wiring topology work in the RFK4D? The main 4 AWG power wire runs from the battery to the included distribution blocks — each block then feeds a 6-foot 8 AWG run to each individual amplifier. This is the standard star-distribution wiring topology for dual amplifier installations — one protected main run splits to two independent amplifier feeds.
Are two separate RCA cables included? Yes — two 16-foot twisted pair RCA cables are confirmed in the kit, one for each amplifier.
What are the distribution blocks in this kit? Two 4 AWG distribution blocks are included — these are the inline distribution points between the main 4 AWG run and the 8 AWG secondary runs. Confirm the specific block specifications from the official product page.
Is remote wire included? Yes — 20 feet confirmed.
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