Rockford Fosgate RFK4D 4 AWG Complete Dual Amp Installation Kit
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) |
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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.
Original: $235.48
-65%$235.48
$82.42Product Information
Product Information
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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) |
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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.
