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A tight fitting Denali Soundbomb Mini Horn

dmonkey

Well-known member
Joined
Jul 4, 2021
Messages
2,255
Location
🇺🇸
I'm not a fan of the horn tone on most newer bikes so I swapped out the stock horn with a Denali Soundbomb Mini. The Mini is 113 db (on paper), compact, and doesn't draw enough current to need a new relay or additional wiring. I have also used the full size Soundbomb which is about 7 db louder on my Scrambler, but it is significantly larger where it would need to be mounted somewhere else on the bike such as crash bars, and it requires more wiring and a different horn relay since it draws more current. In my opinion the mini is fine for around town, the full size one has its place for loud highway riding.

Here is the info on the horn:
RevZilla also carries it for $29.99
You don't need the additional wiring harness unless you're mounting it somewhere else.

Tools used were a 10mm wrench, 10mm socket, and ratchet. I had the headlight off for other work which made it easier, but isn't necessary.

To mount the horn I first removed the old horn including both the bracket stack it is bolted to, and the horn stay bracket which mounts to the steering stem.

20210909_190001.jpg
Stock horn in factory mounted position


20210909_190100.jpg
Horn assembly detached from horn stay bracket.


20210922_211802.jpg
On the left in this photo is the horn stay with a wiring retainer which is removed from the steering stem next. I did not reinstall this part because I want the horn to sit higher up so when I lift the front fender later it won't make contact with the horn when the front suspension is bottomed out. It also gets the horn out of the way visually so it's not hanging down. On the right in this photo is the stock horn.


20210922_181839.jpg
Denali SoundBomb Mini plugged into the stock wiring harness with the black metal bracket stack from the stock horn installed and bent slightly toward the back of the bike when mounted. In this photo I have the black bracket stack mounted backwards on accident 🤷‍♂️ , you want the other side of the rubber spacer to mount against the steering stem.
If you peel back the cable plug boots you can see the wire colors. Light green is the positive lead, dark green is the negative/ground lead.


20210922_182124.jpg
Here is the horn all wired up and mounted. The trumpet needs to point downward so it can properly drain road spray and rain. It is a tight fit and I had to readjust the position and the slight bend in the bracket a few times to get it right so it isn't rubbing against anything. Will certainly re-check it down the road to see how its held its position.
Before you ride the bike you want to turn the steering full lock side to side with the bike running and make sure none of the cables get pulled and all the control work as expected.

Now for the audio!
Here is a clip of the stock horn:

Here is a clip of the Denali SoundBomb Mini horn:
 
Last edited:

rkutzner

Member
Joined
Sep 23, 2021
Messages
45
Excellent write up, thank you ! How much louder would you say it is (a 'lil, very noticable, alot, blew out my eardrums?)
 

dmonkey

Well-known member
Joined
Jul 4, 2021
Messages
2,255
Location
🇺🇸
I would say it's noticeably louder but nothing like a train horn where it will blow out your ear drums. The volume and the tone difference should help it catch attention better. It's less useful for "friendly" honks so need to be careful not to startle others with it unless that's your intent.
 

Gene56

Active member
Joined
Jul 27, 2021
Messages
138
Good Idea, I don't like the stock horn, thanks for the info on this.
 

Baytown

Member
Joined
Sep 16, 2023
Messages
23
Location
Port Arthur Tasmania, AUSTRALIA
I'm not a fan of the horn tone on most newer bikes so I swapped out the stock horn with a Denali Soundbomb Mini. The Mini is 113 db (on paper), compact, and doesn't draw enough current to need a new relay or additional wiring. I have also used the full size Soundbomb which is about 7 db louder on my Scrambler, but it is significantly larger where it would need to be mounted somewhere else on the bike such as crash bars, and it requires more wiring and a different horn relay since it draws more current. In my opinion the mini is fine for around town, the full size one has its place for loud highway riding.

Here is the info on the horn:
RevZilla also carries it for $29.99
You don't need the additional wiring harness unless you're mounting it somewhere else.

Tools used were a 10mm wrench, 10mm socket, and ratchet. I had the headlight off for other work which made it easier, but isn't necessary.

To mount the horn I first removed the old horn including both the bracket stack it is bolted to, and the horn stay bracket which mounts to the steering stem.

View attachment 1431
Stock horn in factory mounted position


View attachment 1432
Horn assembly detached from horn stay bracket.


View attachment 1434
On the left in this photo is the horn stay with a wiring retainer which is removed from the steering stem next. I did not reinstall this part because I want the horn to sit higher up so when I lift the front fender later it won't make contact with the horn when the front suspension is bottomed out. It also gets the horn out of the way visually so it's not hanging down. On the right in this photo is the stock horn.


View attachment 1433
Denali SoundBomb Mini plugged into the stock wiring harness with the black metal bracket stack from the stock horn installed and bent slightly toward the back of the bike when mounted. In this photo I have the black bracket stack mounted backwards on accident 🤷‍♂️ , you want the other side of the rubber spacer to mount against the steering stem.
If you peel back the cable plug boots you can see the wire colors. Light green is the positive lead, dark green is the negative/ground lead.


View attachment 1446
Fantastic write up and photos ‘D’. I’m actually fitting a Denali as you have, but for the life of me, couldn’t find a suitable location for all the reasons you give, so thought I’d check here. You’ve answered all my questions and my big issue was that I forgot about the OEM horn bracket that I removed. I’ll reinstall and shape as per your recommendation.

Thanks again ‘D’.

Ken


Here is the horn all wired up and mounted. The trumpet needs to point downward so it can properly drain road spray and rain. It is a tight fit and I had to readjust the position and the slight bend in the bracket a few times to get it right so it isn't rubbing against anything. Will certainly re-check it down the road to see how its held its position.
Before you ride the bike you want to turn the steering full lock side to side with the bike running and make sure none of the cables get pulled and all the control work as expected.

Now for the audio!
Here is a clip of the stock horn:

Here is a clip of the Denali SoundBomb Mini horn:
 

Baytown

Member
Joined
Sep 16, 2023
Messages
23
Location
Port Arthur Tasmania, AUSTRALIA
I wound up putting my sound bomb on the crash bars. Not ideal, but I just couldn’t get it to fit under there. Might have to try again.
You’ll be able to do it, you just have to man handle the headlight shell loom over to the left a bit. Mine was more pronounced as Ive fitted a Takanowa TFT speedometer instrument in place of the stock gauge.
 

bradatlarge

Member
Joined
Apr 22, 2023
Messages
45
I've got this setup on my CT too. I don't find the Mini to be very loud. I've swapped around the wires and it sounds the same either way.


CT125_Soundbomb.jpg
 
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