Heavy-duty Air Suspension
FIREMAAX® EX heavy-duty rear air suspension delivers the superb ride, stability, and handling required for fire and rescue vehicles. Combining a robust design with performance enhancing features, FIREMAAX EX provides a package of benefits previously unavailable in any one emergency vehicle air suspension.
| Model | FMX 242 | FMX 272 | FMX 312 | FMX 482 | FMX 542 | FMX 622 |
|---|---|---|---|---|---|---|
| Capacity (lbs.) | 24,000 | 27,000 | 31,000 | 48,000 | 54,000 | 62,000 |
| Installed Weight1 (lbs.) | 550 | 658 | 665 | 1,090 | 1,305 | 1320 |
| Axle Configuration | Single | Single | Single | Tandem | Tandem | Tandem |
| Axle Travel2 (in.) | 8 | 8 | 8 | 8 | 8 | 8 |
| Ground Clearance3 (in.) | 10.75 | 10.5 | 10.5 | 10.75 | 10.5 | 10.5 |
| Ride Heights4 (in.) | 8.5 to 15.5 | 8.5 to 12.5 | 8.5,10,13 | 8.5 to 15.5 | 8.5 to 12.5 | 8.5,10,13 |
| Axle Spacing (in.) | N/A | N/A | N/A | 52 to 72.5 | 54 to 72.5 | 54 to 72.5 |
| Disk Brake Compatibility | Yes | Yes | No | Yes | Yes | No |
1. Installed weight includes complete suspension, torque rods, axle and frame brackets and all hardware. Published weight is based on a standard FIREMAAX EX suspension compatible with drum brakes using 10.0-inch ride height. Other configurations may vary.
2. Axle travel may be limited by vehicle manufacturer; axle stop settings and shock stroke may restrict suspension's articulation. Varying ride heights and configurations may restrict travel.
3. Ground clearance is based on a standard FIREMAAX EX suspension with 11R22.5 tire size.
4. For different ride height options, please contact Hendrickson (630-910-2800), your truck manufacturer or your dealer.
Hendrickson is a leading manufacturer and supplier of premium fire/rescue suspension components to global markets.
Our legacy embodies over 100 years as the leading innovator and manufacturer of suspension systems and components for the global heavy-duty vehicle industry.