• 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.

  • Technical Overview

    +
    • Single Axle

        • 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
    • Tandem Axle

        • Capacity (lbs.)
          40,000
        • Axles
          Mack S38R, S40
        • Maximum GCWR (lbs.)
          160,000
        • Site Travel Ratings (lbs.)
          50,000
        • Maximum Engine Torque
          2,050 lb.-ft
        • Weight = Complete Suspension (lbs.)
          644

Resources

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