Kleinn GMTRK-1 Bolt-On Train Horn Kit for GM Trucks Review (2026)

Methodology

This review aggregates publicly available information from manufacturer specifications, retailer listings, and verified user reviews. We do not perform hands-on testing. Last reviewed: August 4, 2026. Primary sources are Kleinn’s official GMTRK-1 product listings, retailer spec pages at RealTruck and LiftKits4Less, and a public YouTube install-and-test video. Every number below is traceable to a source in the Sources section.

Quick verdict

The Kleinn GMTRK-1 is one of the cleanest ways to put a real train horn on a 2007.5–2018 GM half-ton truck or full-size SUV: a genuinely bolt-on, vehicle-specific kit with USA-made powder-coated brackets, a sealed 130 PSI compressor, and dual Model 220 horns rated at a claimed 154.3 dB. You pay for that convenience — new units run about $600 — and the 1-gallon tank limits you to short blasts. We rate it 4.1/5: the fitment engineering is excellent, but Kleinn doesn’t disclose a test distance for the dB rating, and the kit has been superseded on Kleinn’s own site by the GMTRK-3.

What it is

The GMTRK-1 is a complete, vehicle-specific train horn and air system for GM’s 2007.5–2018 full-size trucks and SUVs. Instead of asking you to find mounting space and fabricate brackets — the usual pain of universal kits — Kleinn packages its Model 220 “Lil’ Bad Ass” dual train horns with a 6270RC sealed compressor, a 1-gallon steel tank, and custom brackets that drop into the auxiliary (spare) battery tray under the hood. The horns mount independently behind the front bumper, out of sight. Per Kleinn’s product page, no cutting or drilling is required at any point.

The target buyer is an owner of a 2007.5–2018 Silverado or Sierra 1500 (or Tahoe, Suburban, Yukon, Avalanche, or 2007–2013 Escalade) who wants train horn volume with a factory-clean install and no fabrication. If you drive a 2019+ GM truck, this is not your kit — Kleinn sells separate direct-fit systems for the 2019–2026 1500 and 2020+ HD platforms.

Specifications

Spec	Value
Sound output	154.3 dB claimed (test distance not disclosed)
Horns	Model 220 dual train horns, high-impact ABS, black
Solenoids	One air solenoid per horn (two total)
Compressor	Kleinn 6270RC, sealed, 12V
System pressure	130 PSI
Air tank	1 gallon, steel, Cortec internal corrosion coating, five 1/4” NPT ports
Mounting	Compressor + tank in auxiliary battery tray; horns behind front bumper/air dam
Brackets	Vehicle-specific, powder-coated, made in USA
Install	100% bolt-on — no cutting or drilling
Standards	Built to SAE J10 and FMVSS 121
Onboard air	Can power aftermarket air bags / accessories
Warranty	1-year limited
Price	~$599.95 new at retailers; $449.96–$479.96 open-box/scratch-and-dent direct from Kleinn

Claimed output

154.3 dB (no distance disclosed)

Air system

6270RC compressor, 130 PSI, 1-gal steel tank

Fitment

2007.5–2018 GM 1500 trucks & full-size SUVs

Install

Bolt-on, no cutting or drilling

On fitment: Kleinn’s own listing covers 2007 (new body style)–2018 Silverado/Sierra 1500, Suburban, Tahoe, Yukon and Yukon XL, 2007–2013 Avalanche, and 2007–2013 Cadillac Escalade/ESV/EXT. Some retailer listings shorten this to 2007.5–2017 — we defer to Kleinn’s page, but verify your exact year and battery-tray configuration before ordering.

What’s in the box

• Model 220 dual high-impact ABS train horns (black), each with its own air solenoid
• Kleinn 6270RC sealed 130 PSI air compressor
• 1-gallon steel air tank with Cortec internal corrosion coating
• Vehicle-specific powder-coated mounting brackets (USA-made)
• All hardware, air line, and wiring
• Detailed printed installation instructions

Pros

• True bolt-on install for GM trucks — vehicle-specific brackets, no cutting or drilling, per Kleinn’s product page
• Dual solenoids (one per horn) for crisp, simultaneous response from both horns
• Compressor and tank hide in the factory auxiliary battery tray; horns tuck behind the bumper for a stealth look
• Steel tank with Cortec internal corrosion coating and five 1/4” NPT ports — expandable for onboard air, per RealTruck’s spec listing
• Can power aftermarket air bags and accessories, per Kleinn
• Built to SAE J10 and FMVSS 121 standards

Cons

• 154.3 dB claim comes with no disclosed test distance — treat it as marketing, not a measurement
• 1-gallon tank supports only short blasts before the compressor must refill
• ABS horns, not metal — durable, but less premium than cast or stainless trumpets
• Only a 1-year warranty, short of HornBlasters’ compressor coverage on competing kits
• Kleinn’s own site now sells GMTRK-1 only as open-box/scratch-and-dent stock; the new-production SKU is the GMTRK-3

Alternatives

• Kleinn GMTRK-2 “Chevy Shaker” — the plug-n-play version for 2007–2013 GM 1500s: horns, 6275RC 150 PSI waterproof compressor, and tank come pre-plumbed and pre-wired on their brackets; Kleinn quotes about a 30-minute install.
• Kleinn GMTRK-3 — the current-production successor with the same Model 220 horns and 6270RC air system, and fitment extended to 2020 for Suburban/Tahoe/Yukon; $649.95 direct from Kleinn.
• HornBlasters Conductor’s Special 232 — the universal-kit route with Shocker horns and a bigger air system; more fabrication required. See our Conductor’s Special 232 review.
• For a smaller Kleinn option on tighter budgets, our Kleinn HK2 review covers the compact dual ProBlaster kit.

Install / compatibility notes

The GMTRK-1’s whole pitch is the install. The compressor/tank assembly bolts into the auxiliary battery tray (the empty second tray most GM 1500s have under the hood), and the horn brackets bolt behind the front bumper or air dam. Kleinn includes all wiring and hardware, and its published instructions walk the job step-by-step with common hand tools; a public YouTube install video shows the process and the final horn test. If your truck has a diesel or dual-battery setup occupying that tray, measure first — that tray is the kit’s designated home.

A few practical notes from our broader coverage:

• Expect short, loud blasts — 1 gallon at 130 PSI empties fast. Our air tank size guide explains what that means in seconds of honk.
• The sealed 6270RC is an intermittent-duty compressor; see our duty cycle explainer before you plan onboard-air use like tire filling.
• The five-port tank makes add-ons easy — our onboard air uses guide covers what those spare ports are good for.
• On the loudness claim, read our advertised vs real-world decibels breakdown — no brand’s 150+ dB number survives a 100-foot test.

For how this kit stacks up against the broader field for GM trucks, see our best train horn for Chevy Silverado guide, our Kleinn vs HornBlasters brand comparison, and the rest of our Kleinn reviews. Before installing, check your local rules in our state legality reference.

Sources

• Kleinn — GM 1500 Under Hood Train Horn Kit with Model 220 Dual Train Horns (GMTRK-1, NOB) — official specs: 154.3 dB claim, Model 220 dual ABS horns with per-horn solenoids, 6270RC 130 PSI sealed compressor, 1-gallon steel tank, battery-tray mounting, fitment years, no-cut/no-drill install, open-box price
• Kleinn — GMTRK-1 scratch-and-dent listing (SOD) — SOD pricing and product photo
• Kleinn — GM Direct Fit Train Horn Kit with Model 220 (GMTRK-3) — successor SKU, $649.95 price, extended SUV fitment to 2020
• Kleinn — The Chevy Shaker GMTRK-2 plug-n-play kit — GMTRK-2 alternative specs (6275RC 150 PSI waterproof compressor, ~30-minute install)
• RealTruck — Kleinn Bolt-On Train Horn Kit GMTRK-1 — $599.95 new price, tank construction (steel, Cortec coating, five 1/4” NPT ports), SAE J10 / FMVSS 121 standards, 1-year limited warranty
• LiftKits4Less — Kleinn GMTRK-1 Train Horn System — $599.95 price cross-check and fitment list
• Amazon — Kleinn Air Horns GMTRK-1 Bolt-On Train Horn — retailer availability cross-check
• Summit Racing — Kleinn GMTRK-1 listing — retailer availability cross-check
• Kleinn — Direct Fit Train Horn Kit for 2019–2026 GMC Sierra & Chevrolet Silverado 1500 — backs the note that Kleinn sells separate direct-fit systems for 2019+ GM 1500 trucks
• Kleinn — Bolt-on Train Horns & Onboard Air System for 2020–2026 GM 2500HD/3500HD — backs the note that Kleinn sells a separate direct-fit system for 2020+ GM HD trucks
• Alamo Auto Supply — Kleinn GMTRK-1 for 2007.5–2017 GM 1500 trucks/SUVs — example of a retailer listing the shorter 2007.5–2017 fitment
• HornBlasters — Conductor’s Special 232 Train Horn Kit — competitor warranty terms (lifetime horns, 2-year other components) backing the warranty comparison
• YouTube — KLEINN GM TRK KIT 1 Train Horn INSTALL AND HORN TEST — real-world install walkthrough and horn demo

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