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AMS40A / AMS20A
Air Front Suspensions
Front suspension
Up to 40 000 lbs./ 18 000 kg
Ultra-light. Maximum comfort and safety.
The AMS40A and AMS20A air front suspensions optimize the performance of tires and steering components. Their self-leveling systems makes it perfect for any heavy truck on rough terrain or that has snow equipment. All of our air front suspensions require minimal maintenance and few parts.
- Increased lateral stability
- Superior traction on rough and sloping terrain
- Ultra-light structure
- Seasonal removal of unnecessary springs
- Also available for single-axle trucks with a 20 000 lbs. (9 000 kg capacity) - AMS20A
Technical sheet
Suspension type
Air tandem front suspension (replaces chassis OEM suspension)
Load capacity
AMS20A: 12000 / 14600 / 16000 / 18000 / 20000 lbs. (5445 / 6600 / 7250 / 8180 / 9070 kg) AMS40A: 29200 / 32000 / 36000 / 40000 lbs. (13200 / 14500 / 16320 / 18140 kg)
Axle type
I-beam steer axle
Axle load capacity
AMS20A: 12000 / 14600 / 16000 / 18000 / 20000 lbs. (5445 / 6600 / 7250 / 8160 / 9070 kg) AMS40A: 14600 / 16000 / 18000 / 20000 lbs. (6600 / 7250 / 8160 / 9070 kg)
Axle spacing
60” to 145” (1626 mm to 3683 mm) (Note 1 & 2)
Brakes
(16.5 X 6 / 16.5 X 7) S-Cam air, Auto slack adjuster (ABS)
Hub type
Hub pilot, Spoke
Wheel type (rims)
(8 ¼”, 9”, 12 ¼”, 13”) Steel or aluminum
Tire size
11R22.5 / 315/80R22.5 / 385/65R22.5 / 425/65R22.5 / 445/65R22.5
Steering
AMS20A: Chassis OEM AMS40A: Mechanical, hydraulically assisted
Turning radius
Retains same radius as original equipment
Total weight (Suspension, Axle, wheels and Tires)
AMS20A: No significant weight difference with the OEM suspension it replaces AMS40A: Approx. 2450 lbs. - 1100 kg
1. Depending on make and model of vehicle
2. Varies depending on chassis make/model and ATD / DPF option / location
3. Varies depending on front axle spacing
Modifying heavy trucks has never been easier or flexible.
Simard Suspensions offers all-wheel drive conversions for heavy-duty trucks.
Our custom-engineered AWD conversions can be carried out on any medium and heavy-duty chassis.
As a certified installer with all North American axle and transfer case suppliers, we work with the components of your choice.
View all types of modifications
Types of applications
Our AMS40A and AMS20A air front suspensions for heavy-duty trucks are suitable for many applications, including:
Want to learn more about our AMS40A and AMS20A air front suspensions for vocational trucks?
Études de cas
Get more information about our air tandem front suspensions
Simard Suspensions’ AMS40A and AMS20A air front suspensions for heavy-trucks offer maximum robustness and durability for the most demanding, heavy work.