Mack Trucks launched its Twin Y Air Suspension, a suspension system that uses a Y-shaped high-strength steel design.

Offered with proprietary Mack axles, the Mack Twin Y Air Suspension delivers comfort, handling and fuel efficiency for highway customers desiring a smoother, more stable ride.

The Twin Y is up to 400 pounds lighter than other air suspensions, offering a significantly lighter weight option for customers.  

Mack also announced the availability of Mack proprietary axles on its Mack mRide spring suspension.

Customer field tested for more than three million miles and available on the Mack Pinnacle Axle Back and Axle Forward models, the MACK Twin Y features Mack S38 and S40 series axles with C125/126 and C150/151 carriers.

The design of the Mack Twin Y air suspension includes two stamped high-strength steel Y-shaped blades per wheel end. The Twin Y blades are joined to the axle with both upper and lower axle seats, which greatly reduces suspension windup and significantly improves tire traction and braking control.

The axle seats are clamped to the axle housing by Huck U-bolts on both sides and never need to be re-torqued.

Bushings in the upper and lower axle seats offer greater roll control and deliver easier handling and a more comfortable ride. Lighter weight and non-torque reactive, the Twin Y requires less maintenance and extends tire and component life, significantly improving customer ROI.

The Twin Y’s design means the load on the suspension is entirely on the air ride and not on the pivot bushing.

The Mack mRide spring suspension, paired with the Mack C150/151 series axle carriers, delivers performance for vocational applications and is available on the Mack Granite, Titan by Mack, Mack Pinnacle Axle Forward and the Mack TerraPro model trucks.

The use of spring leafs over four separate rubber block packs offer stability and articulation, while also allowing the needed clearance for larger tires and brake components required in construction and vocational applications.

The Mack mRide provides constant ground contact for all wheels over its articulation range, which in turn maximizes traction on any jobsite.

The parallel pinion angles of the Mack axles extend the driveline joint life. Coupled with the greaseless mRide suspension, the offering boasts easier maintenance and is easier to align, contributing to reduced customer maintenance costs.