Kleinn Onboard Air System w/ Model 730 Horns — Fits 2020-2024 Chevrolet Silverado/GMC Sierra 2500HD 3500HD

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SKU: KLEGMHD20-734
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Sale price$1,299.99 Regular price$1,689.94
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Kleinn Air Horns

Kleinn Air Horns engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Kleinn Air Horns lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Kleinn Onboard Air System with Demon Model 730 Horns for 2020-2024 GM HD Trucks

Upgrade your 2020-2024 Chevrolet Silverado 2500 HD/3500 HD or GMC Sierra 2500 HD/3500 HD with the powerful Kleinn Onboard Air System, featuring the renowned Demon Model 730 train horns. This comprehensive kit is specifically designed for a seamless, direct-fit installation on your late-model GM heavy-duty truck, providing both a robust onboard air supply and an incredibly loud, attention-grabbing horn system. It's the perfect solution for truck owners who demand both utility and an unmistakable presence on the road.

Key Advantages:

  • Demon Model 730 Train Horns: Equipped with the legendary Model 730 triple air horns, delivering an aggressive and commanding sound that ensures you're heard.
  • Integrated Onboard Air: Provides a complete air source for inflating tires, operating air tools, and other pneumatic needs, making your truck more versatile.
  • Vehicle-Specific Fitment: Engineered with custom brackets and components for 2020-2024 Silverado and Sierra HD models, ensuring a straightforward, bolt-on installation without modifications.
  • Durable Construction: Built to Kleinn's high standards, using robust materials that withstand the toughest conditions and provide long-lasting reliability.

The Kleinn GMHD20-734 system is an indispensable upgrade for modern GM HD truck owners looking for top-tier onboard air functionality and the most powerful horn sound. Find this premium kit at GGCRACING.COM.

Vehicle Fitment

Years Make Model Trim
2020-2024 Chevrolet Silverado 2500 HD Custom
2020-2024 Chevrolet Silverado 2500 HD High Country
2020-2024 Chevrolet Silverado 2500 HD LT
2020-2024 Chevrolet Silverado 2500 HD LTZ
2020-2024 Chevrolet Silverado 2500 HD WT
2020-2024 Chevrolet Silverado 3500 HD High Country
2020-2024 Chevrolet Silverado 3500 HD LT
2020-2024 Chevrolet Silverado 3500 HD LTZ
2020-2024 Chevrolet Silverado 3500 HD WT
2020-2024 GMC Sierra 2500 HD AT4
2020-2024 GMC Sierra 2500 HD Denali
2020-2024 GMC Sierra 2500 HD SLE
2020-2024 GMC Sierra 2500 HD SLT
2022-2024 GMC Sierra 2500 HD Pro
2024 GMC Sierra 2500 HD AT4X
2024 GMC Sierra 2500 HD Denali Ultimate
2020-2021 GMC Sierra 3500 HD Base
2020-2024 GMC Sierra 3500 HD AT4
2020-2024 GMC Sierra 3500 HD SLE
2020-2024 GMC Sierra 3500 HD SLT
2022-2024 GMC Sierra 3500 HD Pro
2024 GMC Sierra 3500 HD Denali Ultimate

Product Details

Product Description
Part Numbers
Sizing & Fit

About Kleinn Air Horns

Kleinn Air Horns engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Kleinn Air Horns lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Kleinn Onboard Air System with Demon Model 730 Horns for 2020-2024 GM HD Trucks

Upgrade your 2020-2024 Chevrolet Silverado 2500 HD/3500 HD or GMC Sierra 2500 HD/3500 HD with the powerful Kleinn Onboard Air System, featuring the renowned Demon Model 730 train horns. This comprehensive kit is specifically designed for a seamless, direct-fit installation on your late-model GM heavy-duty truck, providing both a robust onboard air supply and an incredibly loud, attention-grabbing horn system. It's the perfect solution for truck owners who demand both utility and an unmistakable presence on the road.

Key Advantages:

  • Demon Model 730 Train Horns: Equipped with the legendary Model 730 triple air horns, delivering an aggressive and commanding sound that ensures you're heard.
  • Integrated Onboard Air: Provides a complete air source for inflating tires, operating air tools, and other pneumatic needs, making your truck more versatile.
  • Vehicle-Specific Fitment: Engineered with custom brackets and components for 2020-2024 Silverado and Sierra HD models, ensuring a straightforward, bolt-on installation without modifications.
  • Durable Construction: Built to Kleinn's high standards, using robust materials that withstand the toughest conditions and provide long-lasting reliability.

The Kleinn GMHD20-734 system is an indispensable upgrade for modern GM HD truck owners looking for top-tier onboard air functionality and the most powerful horn sound. Find this premium kit at GGCRACING.COM.

Vehicle Fitment

Years Make Model Trim
2020-2024 Chevrolet Silverado 2500 HD Custom
2020-2024 Chevrolet Silverado 2500 HD High Country
2020-2024 Chevrolet Silverado 2500 HD LT
2020-2024 Chevrolet Silverado 2500 HD LTZ
2020-2024 Chevrolet Silverado 2500 HD WT
2020-2024 Chevrolet Silverado 3500 HD High Country
2020-2024 Chevrolet Silverado 3500 HD LT
2020-2024 Chevrolet Silverado 3500 HD LTZ
2020-2024 Chevrolet Silverado 3500 HD WT
2020-2024 GMC Sierra 2500 HD AT4
2020-2024 GMC Sierra 2500 HD Denali
2020-2024 GMC Sierra 2500 HD SLE
2020-2024 GMC Sierra 2500 HD SLT
2022-2024 GMC Sierra 2500 HD Pro
2024 GMC Sierra 2500 HD AT4X
2024 GMC Sierra 2500 HD Denali Ultimate
2020-2021 GMC Sierra 3500 HD Base
2020-2024 GMC Sierra 3500 HD AT4
2020-2024 GMC Sierra 3500 HD SLE
2020-2024 GMC Sierra 3500 HD SLT
2022-2024 GMC Sierra 3500 HD Pro
2024 GMC Sierra 3500 HD Denali Ultimate

Product Details

Product Description

About Kleinn Air Horns

Kleinn Air Horns engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Kleinn Air Horns lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Kleinn Onboard Air System with Demon Model 730 Horns for 2020-2024 GM HD Trucks

Upgrade your 2020-2024 Chevrolet Silverado 2500 HD/3500 HD or GMC Sierra 2500 HD/3500 HD with the powerful Kleinn Onboard Air System, featuring the renowned Demon Model 730 train horns. This comprehensive kit is specifically designed for a seamless, direct-fit installation on your late-model GM heavy-duty truck, providing both a robust onboard air supply and an incredibly loud, attention-grabbing horn system. It's the perfect solution for truck owners who demand both utility and an unmistakable presence on the road.

Key Advantages:

  • Demon Model 730 Train Horns: Equipped with the legendary Model 730 triple air horns, delivering an aggressive and commanding sound that ensures you're heard.
  • Integrated Onboard Air: Provides a complete air source for inflating tires, operating air tools, and other pneumatic needs, making your truck more versatile.
  • Vehicle-Specific Fitment: Engineered with custom brackets and components for 2020-2024 Silverado and Sierra HD models, ensuring a straightforward, bolt-on installation without modifications.
  • Durable Construction: Built to Kleinn's high standards, using robust materials that withstand the toughest conditions and provide long-lasting reliability.

The Kleinn GMHD20-734 system is an indispensable upgrade for modern GM HD truck owners looking for top-tier onboard air functionality and the most powerful horn sound. Find this premium kit at GGCRACING.COM.

Vehicle Fitment

Years Make Model Trim
2020-2024 Chevrolet Silverado 2500 HD Custom
2020-2024 Chevrolet Silverado 2500 HD High Country
2020-2024 Chevrolet Silverado 2500 HD LT
2020-2024 Chevrolet Silverado 2500 HD LTZ
2020-2024 Chevrolet Silverado 2500 HD WT
2020-2024 Chevrolet Silverado 3500 HD High Country
2020-2024 Chevrolet Silverado 3500 HD LT
2020-2024 Chevrolet Silverado 3500 HD LTZ
2020-2024 Chevrolet Silverado 3500 HD WT
2020-2024 GMC Sierra 2500 HD AT4
2020-2024 GMC Sierra 2500 HD Denali
2020-2024 GMC Sierra 2500 HD SLE
2020-2024 GMC Sierra 2500 HD SLT
2022-2024 GMC Sierra 2500 HD Pro
2024 GMC Sierra 2500 HD AT4X
2024 GMC Sierra 2500 HD Denali Ultimate
2020-2021 GMC Sierra 3500 HD Base
2020-2024 GMC Sierra 3500 HD AT4
2020-2024 GMC Sierra 3500 HD SLE
2020-2024 GMC Sierra 3500 HD SLT
2022-2024 GMC Sierra 3500 HD Pro
2024 GMC Sierra 3500 HD Denali Ultimate

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