Why would you recommend, this set of 4 or the set of 2 with 600 watts ?

I tried running 4 in the amp provided by boss but it didn't have the power needed to dedicate for clear and loud sound. I went back down to two of these and 2 6/9s in my fairing in a separate amp. I would not recommend more then 2, but with just the 2 it was a decent sound I was pleased with it.

Will these fit a 300cc touring scooter?

The MCBK420B may fit. Thank you.

Will this work with a Honda Rebel 250?

I see no reason why they won't fit your Honda Rebel.If you put it up on utube to see the fitting instructions, you can decide if you want to go ahead with the fitting.You won't be disappointed with the great sound.

Where do I find a replacement fuse?

Available at local auto parts or Walmart automotive department

Mcbk420b | Desertcart Portugal

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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€ 184.88

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Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎵 Amplify your adventure — sound that rides with you!

RIDE THE SOUNDWAVE - Seamlessly stream your favorite playlists via Bluetooth with a 30-foot wireless range, keeping your ride synced and energized.
CUSTOM VOLUME CONTROL - Inline volume control lets you fine-tune your soundtrack on the fly, mounted wherever you need it most.
BUILT FOR THE ELEMENTS - Weatherproof construction ensures your music stays uninterrupted, rain or shine, making every ride an adventure.
UNIVERSAL HANDLEBAR FIT - Adjustable brackets fit handlebars from 0.75” to 1.25”, perfect for motorcycles, ATVs, and UTVs—your ultimate ride companion.
POWER PACKED PERFORMANCE - Experience crystal-clear audio with a robust 600-watt max output from compact 3-inch speakers designed for the open road.

The BOSS Audio Systems MCBK420B package includes two 3-inch weatherproof speakers and a compact 2-channel Class D amplifier with Bluetooth connectivity and a 30-foot wireless range. Designed for motorcycles, ATVs, and UTVs, it features adjustable handlebar mounts, inline volume control, and delivers up to 600 watts of max output power. Backed by a 3-year platinum warranty, this system combines durability and high-performance audio for the ultimate on-the-go sound experience.

Specifications

ASIN	B00T3QBL3M
Additional Features	Amplified, Built-in Bluetooth, Weatherproof
Antenna Location	For Music Players
Audio Driver Type	Dynamic Driver
Audio Output Mode	Stereo
Best Sellers Rank	#11 in Powersports Speaker Systems
Bluetooth Range	30 Feet
Brand	BOSS Audio Systems
Built-In Media	Amplifier
Color	Black
Compatible Devices	MP3 Player, Smartphone
Compatible with Vehicle Type	Motorcycle
Connectivity Protocol	Bluetooth
Connectivity Technology	wired, wireless
Control Method	Remote
Controller Type	Remote Control
Customer Package Type	Standard Packaging
Customer Reviews	4.3 4.3 out of 5 stars (7,144)
Enclosure Material	Plastic
Frequency Response	15 KHz
Global Trade Identification Number	00791489123082
Impedance	4 Ohms
Input Voltage	12 Volts
Is Waterproof	False
Item Dimensions D x W x H	4.5"D x 4"W x 4"H
Item Type Name	Boss Audio Systems MCBK420B Motorcycle Bluetooth Speaker System - Class D Compact Amplifier, 3 Inch Weatherproof Speakers, Volume Control, Great for Use With ATVs / Motorcycles, 12 Volt Vehicles
Item Weight	3.8 Pounds
MP3 player	No
Manufacturer	BOSS Audio Systems
Maximum Range	30 Feet
Model Name	MCBK420B
Model Number	MCBK420B
Mounting Type	Handlebar Mount
Number of Audio Channels	3.0
Number of Batteries	1 12V batteries required.
Number of Items	3
Power Source	Corded Electric
Speaker Maximum Output Power	600 Watts
Speaker Size	3 Inches
Speaker Type	Outdoor
Specific Uses For Product	Pro Audio
Subwoofer Connectivity Technology	Wired
Tweeter Diameter	1 Inches
UPC	791489123082 779423617668
Unit Count	1 Count
Warranty Description	3 YEAR PLATINUM DEALER WARRANTY
Warranty Type	Extended
Water Resistance Level	Water Resistant
Wireless Technology	Bluetooth
Woofer Diameter	3 Inches

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