Randy's 2013 Mini Cooper S with 2-Chime Air Horn Kit train horn install exterior photo 1

Randy's 2013 Mini Cooper S 2-Chime Air Horn Kit install gallery photo 2

Randy's 2013 Mini Cooper S train horn installation detail with 2-Chime Air Horn Kit photo 3

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Featured Install

2-Chime Air Horn Kit

Randy's 2013 Mini Cooper S

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Owner Randy

Year 2013

Vehicle 2013 Mini Cooper S

Randy T. transformed his 2013 Mini Cooper S with a HornBlasters 2-Chime Air Horn Kit, proving that even a compact hatchback can pack a serious punch. The kit was installed in the trunk, making excellent use of available space while delivering a loud, attention-grabbing dual-tone blast whenever needed—far louder than the factory horn, without needing a full train-horn footprint.

The trunk-mounted setup keeps the installation clean and organized while allowing the 2013 Mini Cooper S to carry a complete onboard system. HornBlasters’ 2-Chime Air Horn Kit ships as a turnkey package: stealth-black dual metal trumpets, a pre-assembled 120 PSI air source (compressor and tank), a pre-installed 1/4″ high-flow electric valve, wiring, fittings, and hardware. The kit makes its own air on demand—no shop refill required.

Randy’s build is a great example of how the 2-Chime kit can fit a wide variety of vehicles without sacrificing performance. On the product page, choose Non-Weather Resistant (HK-2CHI-M3, AC-M3 3-liter combo, ~4–5 seconds of honk) for the most compact trunk install, or Weather Resistant (HK-2CHI-127H, 1.5-gallon 127H unit, ~6–7 seconds) when you want longer honks and a weather-sealed compressor with snorkel kit. Both run 120 PSI with 90 PSI restart and roughly 35 seconds to recover from 90–120 PSI.

Have you added a HornBlasters horn to your Mini Cooper or another compact car? We’d love to see your setup—submit photos for a chance to be featured in the install gallery.

Feature Highlights

2-Chime Air Horn Kit: complete onboard air system with dual stealth-black metal trumpets and a bright dual-tone chord
This Mini Cooper S install: trunk mounting for a clean, organized hatchback layout that preserves cabin space
Pre-assembled 120 PSI air source and pre-attached 1/4″ high-flow electric valve—bolt-in kit, not a parts puzzle
Two air-system tiers: compact HK-2CHI-M3 (3-liter, ~4–5 sec) or weather-sealed HK-2CHI-127H (1.5-gallon, ~6–7 sec)
Designed for 12-volt trucks, SUVs, cars, RVs, and boats—ideal when you want big sound without a multi-gallon train horn stack

HornBlasters Shocker S6 544K Nightmare Edition Train Horn Kit

PRODUCT

PRICE

Sold out

UP TO 1500% LOUDER

UNLIMITED HONKING

ZERO
DELAY

CAPABLE ONBOARD AIR SYSTEM

2-CHIME AIR HORN ATTITUDE FOR YOUR MINI

The 2-Chime Air Horn Kit delivers the same trunk-friendly discipline and dual-tone punch Randy T. showcased on his 2013 Mini Cooper S. Pick Non-Weather Resistant or Weather Resistant on the product page, confirm mounting and wiring notes before you order, then follow HornBlasters’ instructions so warranty coverage stays intact.

SPECIFICATIONS

Part Number:	HK-2CHIME-M3
Operating Pressure:	120 PSI
Restart Pressure:	90 PSI
Voltage:	12-Volt DC
Horn Length:	15.75" (400.05 mm)
Horn Width:	7.75 in (196.85 mm)
Horn Height:	4.25 in (107.95mm)
Horn Weight:	11.7 lb (0.77kg)

Air Source Kit:	AC-M3 3 Liter Compressor and Tank Combo
Air Source Length:	16.535" (420mm)
Air Source Width:	4.921" (125mm)
Air Source Height:	7.086" (180mm)
Air Source Weight:	11.2lbs (5.08kg)
Max Amperage:	18 Amps

Frequently Asked Questions

No. The 2-Chime Air Horn Kit is a complete onboard system. The 120 PSI air source unit (compressor and tank) is included and pre-assembled, so the kit makes its own air. Randy T.’s Mini Cooper S uses that turnkey package in the trunk—bolt it in and wire it up.

For the tightest trunk footprint, start with Non-Weather Resistant (HK-2CHI-M3—the AC-M3 3-liter compressor and tank combo with about 4–5 seconds of honk per fill. Choose Weather Resistant (HK-2CHI-127H when you want roughly 6–7 seconds of honk and a weather-sealed 127H unit with snorkel kit. Both options use the same dual-chime horns and are listed on the 2-Chime Air Horn Kit product page.

Yes—Randy’s install proves trunk placement works on a 2013 Mini Cooper S. Mount the tank and compressor upright in an enclosed space when running the Non-Weather Resistant 3-liter system, away from moisture, dirt, and debris—HornBlasters notes that tank-mounted compressor is not fully sealed. Protect airlines and wiring from hatch hinges and cargo, and follow the included instructions for fuse and relay protection.

HornBlasters lists about 4–5 seconds of honk on the Non-Weather Resistant system and 6–7 seconds on Weather Resistant—that is total air time per fill, whether one long blast or several short ones. Recovery from 90 to 120 PSI is roughly 35 seconds on both tiers; a full 0–120 PSI charge is about 2 minutes (or ~2 min 10 sec on the 127H unit). Always re-read the live spec tables on the product page before ordering.

No. HornBlasters warns that detaching the compressor from the tank voids the warranty on both 2-Chime air-system options. If you need a detached-compressor layout, their guidance points you toward 232 and higher models—see the warranty notes on the 2-Chime Air Horn Kit product page.

SHARE YOUR HORNBLASTERS SETUP

Running a 2-Chime kit, Safety Horn, or another HornBlasters system on your Mini Cooper, hatchback, or compact car? We’d love to see it. Submit photos and details of your installation for a chance to be featured in our install gallery.

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