Retarder on Freightliner M2

The Allison output retarder is now available as an option for Freightliner M2 112 natural gas refuse trucks spec’d with Allison 3000 and 4000 series RDS transmissions.

Integrated with the Cummins Westport ISL G natural gas engine and part of the transmission, the output retarder provides what’s called “seamless” secondary vehicle braking, ultimately reducing brake-lining deterioration and extending the lifespan of the truck’s hard-working service brakes.

The retarder can be configured with a switch on the dash, allowing the driver to control braking power.

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