DIRECT FIT TRAIN HORN AND ONBOARD AIR SYSTEMS FOR 2007-2021 TOYOTA TUNDRA

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KL TUN-734

Kit Type
Regular price $1,359.95
Sale price $1,359.95 Regular price $1,599.95
In stock

PROP 65 WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

DIRECT FIT TRAIN HORN AND ONBOARD AIR SYSTEMS FOR 2007-2021 TOYOTA TUNDRA

$1,359.95

Overview

Power & Performance — Heavy-Duty Onboard Air Systems

At the heart of every Kleinn onboard air system is a 100% duty-cycle, submersible waterproof air compressor engineered for extreme reliability, fast recovery, and maximum airflow. The high-output compressor feeds a high-capacity, anti-corrosion inner-coated steel air tank built to withstand harsh under-vehicle conditions while delivering consistent pressure and long-term durability for your rig.

When activated, Kleinn train horn systems deliver a true locomotive-style blast engineered for maximum airflow and aggressive output. Whether equipped with ABS (230) or stainless steel (730) horns, each system is tuned to produce a serious road-clearing presence and the kind of attention-commanding performance professional truck builds demand.

System Performance Highlights

  • 100% Duty-Cycle - Waterproof Compressors
  • High-Output Locomotive-Style Air Blast
  • Tuned for Maximum Decibel Output
  • Internal Anti-Corrosion Coated Air Tanks
  • Integrated Tire Inflation Station Support

Kleinn systems don’t just outperform the competition—they redefine the standard. For more than 15 years, Kleinn has dominated by providing the most powerful onboard air systems and unrivaled locomotive volume available. As the only manufacturer to offer true, vehicle-specific bolt-on kits that preserve your OEM spare tire, Kleinn systems provide the perfect fusion of massive airflow and the real-world utility required for tire inflation, air lockers, and pneumatic tools.

True Direct-Fit Installation — Engineered in Tucson, AZ

Every Kleinn direct-fit train horn and onboard compressed air system starts at the Kleinn Automotive Accessories engineering facility in Tucson, Arizona. Our team designs and builds precision-fit, powder-coated steel brackets and pairs them with premium hardware defining what a "true" direct-fit kit should be.

These chassis-specific brackets bolt directly to factory mounting points, delivering a flawless, no-drill OEM-style installation that eliminates the guesswork and frustration of universal kits. By utilizing heavy-duty, laser-cut steel, we ensure each component is securely anchored to the vehicle, providing a stable foundation that can withstand extreme vibration and harsh off-road environments.

Vehicle Specific Kit Highlights

  • 100% bolt-on design
  • Powder-coated heavy-duty steel mounting brackets
  • No drilling. No Cutting. No Welding.
  • No fabrication required
  • Clean, stealth, under-truck mounting
  • Premium mounting hardware
  • Tire Inflation with compressed air service station
  • Spare tire is retained

Ditch the DIY guesswork. Experience a 100% bolt-on transformation that pairs OEM-Style finish with the aggressive performance of our signature train horn blast and compressed air system. Engineered for a perfect fit and maximum decibel output, this is professional grade power designed to dominate the road.

Built for Long-Term Performance — Heavy-Duty Reliability

Kleinn systems are engineered for long-term reliability, heavy-duty performance, and minimal maintenance. Every component is built to withstand harsh under-vehicle conditions while maintaining consistent air pressure and dependable output. Our onboard air systems don’t just survive the elements—they deliver professional-grade power exactly when you need it.

To maximize this utility, each complete system includes the Kleinn INF-1 Tire Inflation Kit and the (1302) Air Coupler Relocation Kit. This powerful combination transforms your vehicle into a convenient mobile air service station, providing the pneumatic muscle required for everything from rapid trail-side maintenance to daily heavy-duty utility.

kleinn COMPLETE SYSTEMS include

  • Heavy-Duty 24' Air Hose: Durable Kink-Resistant High Pressure Hose with attached quick connect couplers
  • Luminscent Gauge: Custom Tire Inflator with glow-in-the-dark face gauge, clip-on air chuck, pressure release
  • Premium Storage: Custom Kleinn canvas storage bag.
  • Coupler Relocation: Quick connect coupler, 12' airline, fittings. Mount your coupler anywhere
  • Automated Pressure: Pressure switch controls the compressor turning on and off automatically.
  • Installation Supplies: All Fittings, Airlines, Horn button, mounting hardware, thread sealant.
  • Complete Wiring: Relay, wires, loom, and fittings needed for installation.

Whether you’re commanding the road with a massive blast, airing up truck tires, or engaging pneumatic accessories, this system is engineered to stay strong and stay loud. The "Demon" bolt-on models ending in -734 enjoy an extended 2-year warranty on both the compressor and horn assembly. Don’t just hit the trail—dominate it with the peace of mind that comes with professional-grade engineering.

Kleinn 230 vs. 734 Systems
What’s the Difference?

Choosing the right system for your truck depends on your demand for air power and volume. While all options are 100% bolt-on, Kleinn systems are categorized into three distinct performance tiers:

Performance Tier Comparison For Vehicle Specific Kits

-OBA Series

Dedicated 200 PSI Onboard Air systems only. Designed for tire inflation, managing air suspension and lockers, and powering small air tools. Horns not included.

-230 Series

High-performance entry-point featuring the Beast™ Series 230 Triple ABS Train Horns, 1/4" airline, and our reliable 150 PSI onboard air system capable of filling tires up to 35".

-734 Series

Step up to the Demon™ Series featuring our 730 Stainless Steel Flagship Train Horns fed by 1/2" airline. The 734 is built to decimate all. UNMATCHED VOLUME. UNRIVALED POWER!

Vehicle Specific System Comparison at a Glance

Feature 230 Series (xxxxxx-230) 734 Series (xxxxxx-734)
Horn Model Beast™ Triple Train Demon™ Triple Train
Horn Material ABS Black Plastic Stainless Steel
Air Line Size 1/4" High-Pressure 1/2" Max-Flow
Air Compressor 6350RC (150 PSI) 6450RC (200 PSI)
Duty Cycle 100% Duty Cycle 100% Duty Cycle
Tire Inflation Up to 35" Tires Up to 39" Tires

Ultra BLASTMASTER™
UPGRADE OPTIONS

Maximize Your Horn's Potential

Maximize your horn's potential by upgrading the airflow. These kits bypass standard restrictions to deliver instant air directly to each horn.

Kleinn Model 6885 — Upgrade Kit for (xxxx-230)

Engineered specifically for -230 Beast Series systems, the 6885 BlastMaster™ shatters the limitation of standard 1/4" line. By feeding high-velocity air through a massive 1/2" primary line directly to a high-flow manifold, this kit floods each solenoid with maximum air volume. The result is a devastating increase in output and a sharper, perfectly synchronized tri-tone blast that hits with absolute authority.

  • Designed for Model 230 Beast Train Horns
  • (2) Heavy-duty VX6003 High-Flow Brass Solenoid Valves
  • High-Flow Manifold for maximum airline distribution
  • Optimized 1/2" Airline from the tank to the manifold
  • Delivers a massive 30-40% volume increase

Kleinn Model 6890 — Upgrade Kit for (xxxx-734)

Engineered for our flagship -734 Demon Series, the 6890 Ultra BlastMaster™ unleashes the dominance of the legendary 730 Demon Stainless Steel Horns. This kit completely replaces standard plumbing with a specialized high-volume manifold and 1/2" Max-Flow lines. By equipping each horn driver with its own dedicated solenoid, the 6890 upgrade ensures synchronized engagement and peak pressure for every blast.

  • Designed for Model 730 Demon Train Horns
  • (2) Heavy-duty VX6003 Brass Solenoid Valves
  • High-Flow Manifold for 1/2" airline distribution
  • Upgrades to 1/2" Max-Flow airlines delivered to each horn
  • Delivers a massive 30-40% volume increase

Does it come with a warranty?

Kleinn Automotive Accessories Limited Warranty

Kleinn Automotive Accessories stands behind the quality and craftsmanship of our products. Our products are covered against defects in materials and workmanship when properly installed and used under normal operating conditions, subject to the terms below.

One-Year Limited Warranty

Unless otherwise specified, Kleinn Automotive Accessories products are covered by a 1-year limited warranty from the original date of purchase.

This warranty applies to the original purchaser and covers defects in materials and workmanship under normal use.

If a product is determined to have a covered warranty defect, Kleinn Automotive Accessories will, at its discretion, repair or replace the defective product or component.

What Is Not Covered

This warranty does not cover damage or failure resulting from:

  • Improper installation
  • Misuse, abuse, or improper operation
  • Use outside the product's intended application or specifications
  • Modification or alteration of the product
  • Accidents or physical damage
  • Electrical damage
  • Environmental damage or exposure
  • Normal wear and tear

Kleinn Automotive Accessories is not responsible for installation or removal charges, diagnostic fees, labor costs, vehicle downtime, loss of use, or other incidental or consequential expenses associated with warranty service.

Warranty Claims

To request warranty service, email warranty@kleinn.com with the following information:

  • A copy of your original sales receipt or proof of purchase
  • Your full name
  • Email address
  • Telephone number
  • A brief description of the issue

A Kleinn representative will review your claim and may first attempt to resolve the issue through technical support.

If the product needs to be returned for inspection, Kleinn will provide a Return Authorization (RA) number and return instructions. Products should not be returned without prior authorization.

Once received, the product will be inspected to determine whether the issue is covered under warranty. If a covered defect in materials or workmanship is confirmed, Kleinn will, at its discretion, repair or replace the defective product or component.

If inspection determines that the product does not have a covered warranty defect, the product may be returned to the customer, and the customer will be responsible for applicable return shipping costs.

This limited warranty gives you specific legal rights. You may also have other rights, which vary from state to state.

Kleinn Automotive Accessories
4045 N. Highway Drive, Tucson, AZ 85705
Tel (520) 579-1531

What's the returns policy?

How To Return An Item

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.

Return Non-Exceptions

Merchandise that has been worn, used, or altered will not be accepted for return or exchange.

Restocking Fee

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.