Blackforge
Secondary Strike
You already have the brain. Now add the voice. Secondary Strike kits drop a second pair of speakers into your bag lids or lower fairing pods — using the two unused channels on your 4-channel amp. Plug in and double your output.
Simple Plug-In
Pre-wired with waterproof connectors. Just plug into channels 3 & 4 of your existing amp. No soldering. No new amp.
Same Speaker Brand
Iron Strike uses Polk. Obsidian Strike uses Hertz. Damascus Strike uses Audiofrog. Matched to your tier for consistent sound signature.
Same Weather Sealing
Every Strike kit uses the same IP67 / moisture-resistant speakers as your main system. Rain or road spray — no problem.
No Amp Upgrade Needed
Because your system already uses a 4-channel amp, the headroom is already there. You are just using channels that were waiting for this.
Blackforge Acoustic Lining
Proprietary internal acoustic dampening material absorbs cabinet resonance and road vibration, giving you tighter bass and clearer mids at highway speeds.
How It Works
You Already Have the Brain
Same 4-Channel Amp
Your Iron, Obsidian, or Damascus system already runs a 4-channel amp. You are only using channels 1 & 2 right now. Channels 3 & 4 are sitting there with power ready.
Pre-Wired Speakers
We mount your matched speaker pair in bag lid or fairing enclosures and pre-wire them with waterproof quick-connect plugs sized for your specific amp.
Plug & Ride
Connect the two plugs into channels 3 & 4. Set your gain. Done. No new amp. No splicing. No charging system strain. Just double the sound.
Choose Your Tier
Pick Your Strike
Blackforge Iron Strike
- Speakers
- Polk Audio DB402 4" Coaxial
- Power
- 50W RMS (Channels 3 & 4)
- Sensitivity
- 90dB @ 1W / 1m
- Install
- Plug into existing Kenwood KAC-M5024BT
Two Polk DB402 speakers mounted in your bag lids or fairing pods, pre-wired with waterproof connectors that plug directly into channels 3 & 4 of your Iron Series amp.
Blackforge Obsidian Strike
- Speakers
- Hertz Cento CX 100 4" Coaxial
- Power
- 75W RMS (Channels 3 & 4)
- Sensitivity
- 92dB @ 1W / 1m
- Install
- Plug into existing Infinity Kappa KP5004
Two Hertz Cento CX 100 speakers mounted in your bag lids or fairing pods, pre-wired with waterproof connectors that plug directly into channels 3 & 4 of your Obsidian amp.
Blackforge Damascus Strike
- Speakers
- Audiofrog GS42 4"
- Power
- 100W RMS (Channels 3 & 4)
- Sensitivity
- 90dB+ @ 1W / 1m
- Install
- Plug into existing Kicker 48PXA400.4
Two Audiofrog GS42 speakers mounted in your bag lids or fairing pods, pre-wired with waterproof connectors that plug directly into channels 3 & 4 of your Damascus amp.
Compatibility
Works With Any
Blackforge System
Secondary Strike is not a standalone system. It is an upgrade for existing Blackforge customers. Because every tier uses a 4-channel amplifier as standard, your amp already has the power and the wiring in place.
You can add a Strike kit at purchase time, or come back later. The amp does not care when you plug in channels 3 & 4. It is engineered for it from day one.
The Blackforge 5-Year Promise
Integrity Guarantee. Performance Guarantee. And our "Rider's Policy" — if a part is discontinued, we upgrade you. Every Iron, Obsidian, and Damascus system ships with our industry-leading warranty. No fine print.
Read Full WarrantyDouble Your Output?
Secondary Strike kits start at $149. Same amp. Same quality. Twice the sound. Available as an add-on with any system or as a later upgrade.
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