Take advantage of longer terms (up to 24 months) and lower payments. No impact on your credit score because there is no hard credit check. No prepayment penalties. Apply without any impact on your credit score.
Expanded Audio Features Combined with Ridiculous Power and Intelligence from Helix
If you're a fanatic for amazing sound, the Helix M FOUR is precisely the right way to go. This amplifier will fire up your speakers in no time with an abundant 135 Max Watts RMS per channel on a scaled-down footprint. Perfect for integration with factory Harley radios, the M FOUR has many features distinguishing it from any other amps ever conceived.
Tap Into Your Factory Radio For a Clean, Well-Defined Sound
The M FOUR is equipped with many intelligent attributes to help it quickly adjust to all installation challenges of modern factory Harley radios. The extensive audio features will offer a sound quality at its best.
This Amplifier is Totally Cool
The M FOUR stays cool thanks to the highly efficient Class D design topology, allowing you to listen for many hours without overheating while it delivers up to 540 Watts of clean and undistorted output power.
Extreme Level Performance
- Integrated, Adjustable Crossover: highpass, lowpass, and bandpass
- Input Mode Switch makes for flexible input signal routing
- Automatic Turn-On Function
- Compact footprint
- High output power of 135 Watts RMS
- Intelligent high-level input makes for easy integration into factory Harley radios
- Surface Mounted Device manufacturing technology combines minimum space with maximum reliability
- Exclusive clean and efficient design
Flash Your Bike Yourself and Be Sure That the Job Is Done Right
Our flash tool rental kit ships with all of the parts required to flash any Harley touring bike radio from 2014 - current year. The kit ships with a return shipping label for your convenience. After you are finished with the tool simply drop it in the mail and receive a full refund for your $200 deposit.
- Output Power RMS: 4 x 100W @4 Ohms; 4 x 100W @2 Ohms; 2 x 200W Bridged @4 Ohms
- Max Output Power/Channel: 135W RMS @2 Ohms
- Amplifier Technology: Class D
- Inputs: 4x RCA; 4x High-Level Speaker Input; 1x Remote In
- Input Sensitivity: RCA 0.5-6V; High Level 1.3-13V
- Input Impedance: RCA 20 kOhms; High Level 13 Ohms
- Outputs: 4x Speaker Output
- Frequency Response: 10 Hz-30,000 Hz
- Highpass: 15 Hz-4,000 Hz adj; Lowpass: 40 Hz-4,000 Hz adj; Bandpass: 15 Hz-4,000 Hz adj
- Slope High/Lowpass: 12 dB/Oct
- Signal-to-Noise Ratio: 98 dB
- Distortion (THD): 0.05 %
- Damping Factor: 100
- Operating Voltage: 10.5-16V (Max. 5 sec. down to 6V)
- Fuse: 2 x 30A Maxi-fuse (APX)
- Dimensions: 2.00" H x 9.06" W x 6.06” D
- (1) 4-Channel Amplifier with Integrated Active Crossover
- (1) Pair Front Speaker Pod Connectors
- (1) Remote Wire
- (1) Pair Signal Input Wire
- (1) Mounting Pad with Adhesive
- (1) Instruction Manual
Perfect way to pay within 100 days with no credit history required and no hard credit check. We cover the financing fees for you as long as you pay off your purchase within 100 days. So there are no hidden fees. Apply without any impact on your credit score.
100 Day same as cash financing
Most items ship in 24 hours (83% on average), some items do have a lead time due to manufacturing and tech oversight. All orders are processed and built in the order in which they are received. This allows our experts to review every order and check that it is correct for your specific bike. This means that sometimes you might have to wait a little longer to receive your order, but it’s always worth it!
Returns are easy, simply contact us for a returns number and send your item to our returns centre for fast processing. We’ll get you a replacement or refund in a snap! You can find our refund policy here.
Some items have a longer lead time due to custom assemblies and requirements for tech oversight before shipping. We do our best to add estimated lead times directly to the product page for these items as well as inform our customers over the phone. All items in an order will generally ship together, so if you have one or more items that have longer lead times the other items in your order will usually ship out as soon as all parts are assembled and inspected. Please do not plan the ride of your life around the estimated shipping times of your stereo equipment :)
Simply contact us for a return Authorization number and send your item to our returns center for fast processing. We’ll get you a replacement or refund in a snap! You can find our return policy here.
your part is guaranteed to fit
We test fit every part we sell on actual bikes in order to verify fitment on each moden, generation, and in each possible location. You can be sure that if we have stated that a part fits your bike, that it will, or your money back. You will find model, year, and location fitment details on most product pages.
We thoroughly test every part we sell on a real bike
There are a lot of parts out there that we refuse to sell. If it’s not up to our high standards, it never makes it to this website. We have parts that fit various budgets and levels of insanity, but all parts we carry are exceptional performers.
WE ARE FULLY AUTHORIZED RETAILERS FOR ALL BRANDS WE SELL
There are only a select few authorized online retailers for the brands we sell. Most all online retailers (even the really big ones) are not authorized at all! And the manufacturer’s warranty is void before you even get your items.
ordering from american hard bag is 100% safe and secure
You can rest easy - your personal details are never shared, sold, or rented to anyone either.