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Posaidon Boosts AMG GT R Roadster to 880hp

05 May, 2025 1
Mercedes-AMG GT R Roadster

Who says convertibles can't be fast? The new Posaidon RS 830+ proves them wrong. It's based on the Mercedes-AMG GT R Roadster. This sporty car is already rare — only 750 units were made, and each one is numbered.

From 585hp to 880hp: Big Power Boost

The standard AMG GT R Roadster has 585 horsepower and 700 Nm of torque. But Posaidon didn't stop there. They upgraded the car with a stronger M178 engine in Mülheim-Kärlich. Now, the car delivers a huge 880hp and 1,000 Nm of torque (electronically limited).

  • 0-100 km/h in 2.9 seconds
  • Top speed: 360 km/h

How Did Posaidon Do It?

To get this extra power, Posaidon added:

  • Two new high-performance turbochargers with ball bearings
  • High-performance forged pistons
  • Sports air filters
  • High-performance spark plugs
  • Upgraded fuel pumps

The engine also has new manifolds and downpipes with sports catalytic converters to handle the extra exhaust gases.

Upgraded Transmission for All That Power

The car comes with the AMG SPEEDSHIFT 7-speed dual-clutch transmission. Posaidon upgraded both the software and hardware for better performance.

Other Versions: RS 830 and Entry-Level Option

Posaidon offers two other versions:

  1. RS 830
    • Same parts as RS 830+
    • 830hp and 950 Nm of torque
  2. Entry-Level Version
    • Upgraded original M178 turbocharger
    • 780hp and 850 Nm of torque
    • Adds downpipes with catalytic converters and optimized air intakes
    • Has reinforced transmission hardware

The Posaidon RS 830+ takes the already powerful AMG GT R Roadster, making it a beast on the road. With up to 880hp, it's one of the fastest convertibles. And if that's too much, the RS 830 and entry version still give you major performance upgrades.

Tuning Empire