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Featured Install
Conductor's Special 228H
2015 Chevy Camaro
Sound Sample
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Shocker XL 4 bells Trunk air system Undercar horns 150 PSI ~4 sec honk
2015 Chevy Camaro Conductor's Special 228H.
Conductor's Special 228H.
Horns under. Air in the trunk.
No truck required.
Conductor's Special 228H Train Horn Kit
Gary gave his 2015 Chevy Camaro a loud upgrade with the HornBlasters Conductor's Special 228H Train Horn Kit. The 2H air system mounts cleanly in the trunk, while the Shocker XL train horns sit underneath near the rear — sleek look, serious sound.
Even with limited car space, the 228H kit delivers a deep, aggressive honk with around 4 seconds of blast time and a fast ~55-second recovery from 110–150 PSI. Proof you don’t need a big truck to run real train horns.
- Shocker XL train horns: four fiberglass-reinforced ABS bells, locomotive tone
- 2-gallon 150 PSI air source: compact 228H / 2H unit for car installs
- ~4 second honk: strong blast time on a full tank
- ~55-second recovery: refill from 110 to 150 PSI
- Trunk + undercar mount: air in the trunk, horns under the rear
- Complete kit: horns, sealed air source, valve, airline, wiring, and hardware
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What’s in the box
Includes
- Shocker XL horns
- 2-gal air source
- Pressure switch
- Black Widow valve
- DOT airline
- Fittings
- Wiring
- Hardware
- Ear plugs
The kit
Specifications
Conductor's Special 228H Train Horn Kit Gary’s Camaro runs the HK-S4-228H kit: Shocker XL four-bell horns and a compact 2-gallon 150 PSI sealed air source unit mounted in the trunk.
150PSI Operating pressure
4bells Shocker XL train horn
~4sec Continuous honk
2gal 228H air source
| Kit | |
| Part number | HK-S4-228H |
| Operating pressure | 150 PSI |
| Restart pressure | 110 PSI |
| Voltage | 12-Volt DC |
| Max amperage | 25 amps |
| Honk time | ~4 seconds |
| Recovery | ~55 seconds (110–150 PSI) |
| Horn | |
| Horn | Shocker XL train horn |
| Material | High-impact fiberglass reinforced ABS |
| Horn measurements | № 1 19.50″ (495.30 mm) № 2 16.25″ (412.75 mm) № 3 14.75″ (374.65 mm) № 4 12.75″ (323.85 mm) |
| Horn flare | 5″ (127 mm) |
| Air system | |
| Air source unit | HornBlasters 228H / 2H air source unit |
| Air source length | 19″ (482.6 mm) |
| Air source width | 6.25″ (158.75 mm) |
| Air source height | 14.5″ (368.3 mm) |
| Air source weight | 17.15 lb (7.78 kg) |
| Air tank | 2.0 gallon |
| Volume | 2 gal (8.8 L) |
| Maximum duty cycle | 30% @ 100 PSI |
| Fill rate, at 13.8 volts | |
| 2.0 gallon tank · 0 to 145 PSI | 3 min. 5 sec. (± 10 sec.) |
| 2.0 gallon tank · 110 to 145 PSI | 55 sec. (± 05 sec.) |
Frequently Asked Questions
Is the Conductor's Special 228H a complete kit?
Yes. It includes Shocker XL four-bell train horns, a 2-gallon 150 PSI air source unit, pressure switch, air valve, hoses and fittings, wiring, and mounting hardware.
How long can I honk with the 228H kit?
About 4 seconds of honk time on the 2-gallon tank, with roughly 55 seconds to recover from 110–150 PSI. Operating pressure is 150 PSI with restart at 110 PSI.
Why is the 228H a good fit for cars like a Camaro?
The sealed 2H air source is compact enough for trunk mounting, and the Shocker XL horns can mount under the rear. You get real train horn sound without needing truck-sized space.
What are the compressor and air source specs?
12-Volt DC, 25 amp max draw, 30% duty cycle at 100 PSI. The air source measures 19″ L × 6.25″ W × 14.5″ H and weighs about 17.15 lb — also useful for tire inflation and small air tools.
What are the advantages of a trunk-mounted air system?
It keeps the install clean using factory trunk space, leaves the exterior uncluttered, and pairs well with undercar horn mounting for strong sound without changing the car’s look.
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