Twin Y™
The Mack Twin Y™ air suspension is a lightweight, low-maintenance suspension for high-demand jobs. Its innovative Y-shaped design delivers unmatched comfort, handling and fuel efficiency for a smoother and more stable drive.
400 LB. WEIGHT SAVINGS
ENGINE TORQUE CAPACITY UP TO 2,050 LB.-FT.
25% LONGER TIRE LIFE
LOW TO NO MAINTENANCE
20,000 TO 40,000 LBS. CAPACITY
High-Strength Steel Y-shaped Blades
Strong and light
The Twin Y ’s revolutionary design creates a weight savings of more than 400 lbs. versus other suspensions, and an engine torque capacity up to 2,050 lb.-ft.
Air Springs
Best-in-class ride and handling
The vertical load rides 100% on the air springs, while the design reduces axle torque windup and allows the tires to maintain contact with the pavement during braking. Reduced wheel hop also improves traction.
Complete Integration
Available on single and tandem axle Mack Pinnacle™ models, Twin Y™ is fully integrated with Mack’s MP® engines, transmissions and axles for increased efficiency.
Uptime by Design
With lubrication- and maintenance-free rubber bushings, axle seats that never need re-torqueing, an easier axle alignment and less driveline vibration for extended component life, the Twin Y™ air suspension requires little maintenance.
Lower Cost of Ownership
Twin Y™ can extend tire life by up to 25% and with a weight-savings of 400 lbs. versus other suspensions. That means less wear and tear on your vehicle and your wallet.
Suspension & Performance Specs
Twin Y™ is available on the Mack Pinnacle™ Axle Back and Axle Forward models and features Mack S38 and S40 series axles with C125/126, C150/151 and 200 Series axle carriers so you can tailor performance to fit your applications.
AXLE CONFIGURATIONS |
GAWR |
CAPACITY (GCW) |
| 4x2 | 20,000 lbs. | 40,000kg./105,000 lbs. |
| 6x4 | 38,000 lbs. | 73,000kg./160,000 lbs. |
| 6x4 | 40,000 lbs. | 73,000kg./160,000 lbs. |
Single Axle
Tandem Axle
Tehnical Overview
CAPACITY (LBS.)
20,000
AXLES
Mack RA23R
MAXIMUM GCWR (LBS.)
105,000 (with CRD203)
SITE TRAVEL RATINGS (LBS.)
25,000
MAXIMUM ENGINE TORQUE
2,050 lb.-ft
WEIGHT = COMPLETE SUSPENSION (LBS.)
322
Tehnical Overview
CAPACITY (LBS.)
40,000
AXLES
Mack S38R, S40
MAXIMUM GCWR (LBS.)
160,000
SITE TRAVEL RATINGS (LBS.)
50,000
MAXIMUM ENGINE TORQUE
22,050 lb.-ft
WEIGHT = COMPLETE SUSPENSION (LBS.)
644