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KL 6880
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MAXIMUM AIRFLOW VELOCITY PACK
Push your pneumatic horn architecture to its absolute mechanical thresholds with the premium Kleinn Model 6880 BlastMaster™ Air Flow Upgrade Kit. Explicitly engineered to unleash immediate airflow scaling, this modification package is designed for Model 630 horns and can be used to significantly overhaul Model 220 train horns to make them up to 30% louder. By providing a dedicated manifold feed structure, your individual horn trumpets no longer have to share a restricted secondary air volume feed from a single valve—boosting your system to a mind-blowing decibel output.
ELIMINATE AIRFLOW BOTTLENECKS
The core philosophy of the BlastMaster™ package is simple physics: more air volume delivery equals massive acoustic power. The Model 6880 ditches standard restrictive supply layouts by feeding a massive, oversized 1/2" high-pressure primary air line directly into the multi-valve cluster. Paired with two high-performance Model 307 "chrome" solenoid valves, each horn trumpet gains an unhindered, continuous path to immediate air tank pressure for a devastating and highly authoritative blast profile.
THE VERDICT: The definitive choice for maximizing classic multi-horn velocity. The Model 6880 introduces an unconstrained 1/2" delivery pipeline and a dedicated triple-valve configuration to ensure your air horn system strikes at its true peak acoustic threshold.
Before finalizing your upgrade order, please perform a physical inspection of your existing air horn manifold assembly to verify valve styling:
🔴 PRO TIP: Balance your upgraded pneumatic speed with clean electrical power distribution. Because you are now firing three high-performance solenoids simultaneously, protect your circuit pathways by routing your trigger lines through an isolated 40-amp fully sealed automotive relay like our Kleinn Part #340 to completely shield your cockpit activation buttons from electrical spikes.
PRODUCT SPECIFICATIONS
| Feature | Details |
|---|---|
| Part Number | 6880 |
| Product Collection | BlastMaster™ Air Flow Upgrade Kit |
| Solenoid Valves Included | Two (2) Model 307 Chrome-Plated Assemblies |
| Primary Upgrade Air Line | Oversized 1/2" High-Pressure Pneumatic Line Run |
| Target System Match | Kleinn Model 630 Horns / Model 220 Horns |
| Acoustic Performance Bump | Up to 30% Decibel Output Increase |
| System Voltage Integration | Standard 12-Volt DC |
Operating a triple-solenoid setup requires structured electrical distribution to safeguard your dash switches and ensure uniform current deployment to all coils simultaneously:
MANUFACTURER INSTRUCTION LINKS

$99.95
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.
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.
This warranty does not cover damage or failure resulting from:
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.
To request warranty service, email warranty@kleinn.com with the following information:
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.
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.