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4TH OF JULY SALE • 20% OFF SITEWIDE • PRICES AS MARKED
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4TH OF JULY SALE • 20% OFF SITEWIDE • PRICES AS MARKED
KL HK2
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TIME TO RETIRE THE WIMPY FACTORY HORN
The Model HK2 is engineered specifically for drivers who demand maximum sonic impact using stainless steel trumpets and a premium chrome aesthetic without sacrificing valuable mounting space. This system provides the ultimate value by packing the raw, commanding authority of an emergency vehicle horn into a compact, streamlined package. Whether you are navigating busy city streets or rural highways, the HK2 ensures you have the presence of a much larger vehicle, making it the perfect upgrade for those looking to replace a weak factory chirp with a professional-grade, high-impact blast.
PROFESSIONAL-GRADE PERFORMANCE
At the heart of the system is the high-performance 6270 waterproof air compressor paired with dual trumpets featuring our signature Chrome finish. This heavy-duty combination is not only built to withstand the harshest elements but also provides a sleek installation that can be fitted to any application. The 120 PSI air system is optimized for rapid recovery and includes a 0.5-gallon inner-coated steel tank, ensuring you always have a reliable air supply ready whenever you need to make your presence known.
BIG SOUND – SMALL FOOTPRINT
Installation is made simple thanks to the kit’s clever, low-profile design. The compact footprint allows for a seamless fit in tight locations, such as behind the grille or tucked neatly inside the engine bay, where traditional train horns simply won't fit. By choosing the HK2, you are joining thousands of drivers who trust Kleinn for superior quality and loud, dependable results. Don’t settle for a vulnerable factory horn when you can have the professional-grade power and "get out of the way" authority of the Universal ProBlaster™ HK2.
THE VERDICT: The Model HK2 Chrome Kit is the ideal premium value upgrade path for trucks, SUVs, and Jeeps seeking an immediate, loud high-pressure double blast while matching classic show-car chrome visual aesthetics in a space-saving footprint.
The Screamer
Engineered for "Emergency Vehicle" authority. This series delivers a sharp, high-frequency blast designed to cut through ambient noise instantly. With 3.5" bells, these horns produce a piercing scream that commands attention in heavy traffic.
The Deep Rumble
Don’t just make noise—make an impact. Engineered with massive 6-7" bells, our Train Horns move huge volumes of air to create a deep, earth-shaking rumble. This is the authentic tone of a classic 40,000-lb locomotive.
Professional-grade engineering. Legendary Kleinn Performance.
Too Loud? Too Bad!
AIR HORN SPECIFICATIONS
| Dual Chrome Air Horns | |
|---|---|
| Part Number | Model 102 |
| Number of Horns | 2 Horns (Single Mount) |
| Warranty | 1-Year Warranty |
| Construction | Chrome Stainless Steel |
| Vortex 4 Chrome 12v Solenoid | P/N- 307 w/ ¼” Airline Input |
| Min / Max Pressure | 120 - 150 PSI |
| Output (dB) @ 150 PSI | 149.1 dB |
| Dimensions | 16.5” L x 7.25” W x 3.75” H |
| Minimum Tank Size | 0.5-Gallon |
| Airline Input Size | 1/4" OD Airline |
AIR COMPRESSOR SPECIFICATIONS
| 12-Volt Light-Duty Compressor | |
|---|---|
| Part Number | Model 6270RC |
| Warranty | 1-Year |
| Max Pressure | 120 PSI |
| Duty Cycle | 25% @ 100 PSI (@ 72° F) |
| Flow Rate | @ 0 PSI (13.8 Volts): 1.56 CFM |
| Compressor Type | Waterproof Sealed, Oil-less |
| Voltage | 12-Volt DC |
| Motor Type | Permanent Magnetic Motor |
| Max Tank Size | 0.5 Gallon |
| Max Amp Draw | 14 Amps |
| Dimensions | 6.4” L x 3.5” W x 4.6” H |
| Mounting Holes | 6.14” L x 2.76” W (5mm Diameter) |
| Mounting Note | Mount in any position except upside down |
| Shipping Weight | 7 lbs |
| Pressure Switch/ Safety Valve HK1-HK2 | P/N 2121 (Pair w/ 52145 for 120 PSI kits) |
| Pressure Switch/ Safety Valve HK3-HK4 | P/N 2131 (Pair w/ 52155 for 130 PSI Kits) |
AIR TANK SPECIFICATIONS
| 0.5-Gallon Air Tank | |
|---|---|
| Part Number | Model 6260RT |
| Warranty | 1-Year |
| Tank Capacity | 0.5-Gallon |
| Construction | All Steel Design (Gloss Black Epoxy Finish) |
| Internal Coating | Cortec Coating for Corrosion Resistance |
| Mounting Legs | 1 Leg w/ 2 Mounting Points |
| Air Tank Ports | 5 - 1/4" NPT Ports |
| Mounting Hardware | Fitting Pack - 2 Bolts, Nuts, Washers |
| Max Pressure | 150 PSI |
| Dimensions | 8” L x 6” W x 8” H |
AIR TANK FILL RATE DETAILS
| Tank Capacity | Tank Pressure Range | Tank Fill Rate |
|---|---|---|
| .5 Gallon | 0 - 150 PSI | 1 Min. 11 Sec. (+/- 5 Sec.) |
| .5 Gallon | 110 - 150 PSI | 26 Sec. (+/- 3 Sec.) |
| 1 Gallon | 0 - 150 PSI | 1 Min. 57 Sec. (+/- 10 Sec.) |
| 1 Gallon | 110 - 150 PSI | 38 Sec. (+/- 5 Sec.) |
INSTALLATION INSTRUCTION LINKS:

$287.96
Kleinn Automotive Accessories is committed to delivering high-quality products to our customers. We stand behind the craftsmanship and materials of our products by offering a comprehensive one-year limited warranty. This warranty is extended to the original purchaser, ensuring that when our products are installed properly and used under standard conditions, they will be free from defects in workmanship and materials for a period of one year from the original date of purchase.
This warranty encompasses a promise that the product you have purchased will perform as expected under normal use conditions and will not suffer from flaws in materials or craftsmanship. However, it is important to note that this warranty does not cover any damage that results from abusive use, operation that is not in line with the product’s intended purpose, or harm resulting from exposure to harsh environmental conditions. In the event that a product is found to be defective within the warranty period following a thorough inspection, Kleinn Automotive Accessories reserves the right to either repair or replace the defective item at no additional charge to the purchaser. It is our goal to ensure that our products meet the high standards that our customers expect, but we also want to clarify that Kleinn is not responsible for covering any costs related to the installation of our products, nor are we liable for any loss or damage that may occur as a result of the repair or replacement process of any product under warranty.
Understanding the specific needs of our customers and the demands placed on certain products, Kleinn Automotive Accessories is pleased to offer an exclusive extended two-year warranty for our 6450/6650 Compressors and 730 Horns. This special warranty extension reflects our confidence in these products’ durability and performance. Eligible products under this extended warranty will enjoy all the benefits of our standard one-year warranty with an additional year of protection, totaling two years from the date of purchase. This extended warranty coverage ensures that these specific models, recognized for their robustness and reliability, receive the extra assurance customers desire for these critical components.
Should you need to initiate a return under the warranty, we have a straightforward process designed to make it as convenient as possible for our valued customers. To start, you will need to email a copy of your sales receipt, which must be dated within the past year for standard warranty claims or within the past two years for claims under the extended warranty for the 6450 Compressors and 730 Horns. This email should be directed to our Warranty Manager and include your full name, email address, telephone number, and a concise description of the problem you are experiencing.
Upon receipt of your email, a dedicated representative from Kleinn Automotive Accessories will reach out to you directly. Our first step will always be to attempt to resolve the issue through technical support, aiming to provide a quick and effective solution. If the problem cannot be addressed remotely, our representative will issue a Return Authorization number. This number is crucial as it will identify your return throughout the inspection process. You are then required to send the product back to Kleinn Automotive Accessories for a comprehensive physical inspection.
Upon inspection, if the product is determined to be defective due to issues in workmanship or materials, Kleinn will undertake to either repair or replace the product at our discretion. We are committed to ensuring that our customers receive products that meet our high-quality standards, and we will make every effort to resolve warranty claims to your satisfaction. However, if the inspection reveals that the product does not have a material defect, we will return the unit to the customer. In such cases, the shipping costs for the return will be the responsibility of the customer.
Your item must be in its original unused condition to be returned, unless there is a manufacturer defect. You must return the item within 30 days of your purchase.
1. Please email support@kleinn.com to request a refund and we will assign you a Return Authorization #.
2. Mail your returned item to:
Kleinn Automotive Accessories
Returns Department
4045 N Highway Drive
Tucson, AZ 85705
3. Include in your package a signed letter stating the reason for your return and the original receipt.
Merchandise that has been worn, used, or altered will not be accepted for return or exchange.
All returns are subject to a 15% restocking fee, which will be deducted from your refund. If shipping and handling fees were applied to your order, they are non-refundable.