Harley Davidson air suspension systems allow riders to adjust their motorcycle’s ride height and damping for improved comfort and handling. These aftermarket kits use compressed air to customize suspension stiffness, adapting to road conditions or passenger loads. Benefits include smoother rides, reduced fatigue, and enhanced stability during cornering or braking. Installation typically requires aftermarket parts and professional calibration.
How to Install an Air Suspension System on a Harley Davidson?
Installation involves mounting air shocks, compressors, and control modules. Key steps include removing stock shocks, routing air lines discreetly, and calibrating pressure sensors. Professional installation is recommended for wiring integration and avoiding frame stress. Brands like Arnott and Legend Suspensions offer Harley-specific kits with pre-assembled components to simplify the process.
For DIY enthusiasts, start by gathering specialized tools like a motorcycle lift, torque wrench (35-45 ft-lbs capacity), and air line crimpers. Disconnect the battery before removing factory shocks to prevent electrical shorts. When routing air lines, avoid sharp bends near the swingarm pivot point – maintain at least 1.5″ clearance from exhaust headers. Many modern kits feature Bluetooth-enabled controllers that require programming via manufacturer apps. Test the system at 25 PSI increments, checking for even lift on both sides. A common mistake is over-tightening air line connectors, which can crack brass fittings – use thread sealant instead of force.
| Tool | Purpose |
|---|---|
| Digital Shock Pressure Gauge | Ensures balanced pressure between shocks |
| Line Disconnect Tool | Removes push-to-connect air fittings safely |
| Anti-Seize Compound | Prevents shock mount corrosion |
What Are Common Air Suspension Issues in Harley Davidson Bikes?
Frequent problems include compressor failures from moisture ingress, torn air springs on corroded shock mounts, and faulty pressure sensors. Uneven sagging often indicates worn piston seals. Diagnose issues using onboard diagnostic ports (if equipped) or manual pressure gauges. Many kits include error-code displays for troubleshooting.
Riders in humid climates should inspect air dryers monthly – compromised desiccant allows moisture to enter lines, leading to valve blockages. A telltale sign of failing air springs is audible hissing during compression. For sensor errors, reset the ECU using the manufacturer’s diagnostic mode before replacing components. Cold weather operation requires special attention: below 20°F, use synthetic air line lubricant to prevent diaphragm stiffening. Always carry a manual inflation kit as backup – some models allow emergency pumping via Schrader valves near the rear fender.
| Symptom | Likely Cause | Solution |
|---|---|---|
| Intermittent Height Changes | Faulty height sensor | Clean sensor contacts with electrical cleaner |
| Slow Inflation | Clogged air filter | Replace compressor intake filter |
“Modern Harley air suspensions bridge the gap between chopper aesthetics and sport-touring functionality. The latest CAN-Bus integrated systems automatically adjust preload based on lean angles and acceleration data – a game-changer for safety.”
– Jake Torrent, Lead Engineer at Ironborne Suspensions
FAQs
- Does air suspension void Harley Davidson’s warranty?
- Most dealerships honor powertrain warranties if certified shops install suspension kits without altering frame geometry. Always confirm with your dealer first.
- Can I retrofit air suspension on older Harley models?
- Yes – kits exist for Evo and Shovelhead engines. Custom mounting brackets may be needed for pre-1990 frames lacking OEM shock mount points.
- How much does a full air suspension system cost?
- Complete Harley systems range from $2,800 (basic manual kits) to $6,500 (smart air ride with auto-leveling). Labor adds $500-$1,200 depending on wiring complexity.