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RSS Road Sport Supply

RSS underdrive pulleys offer improved horsepower and torque by reducing drag from the power steering pump, air conditioning compressor, water pump, and alternator without a detrimental effect on ancillary systems for M96/M97 and 9A1/MA1 models.. RSS also offers the only harmonic dampened crankshaft pulley for 1997 through 2008 Porsche Boxster, Cayman, and 911 models, providing reduced internal engine harmonics for improved engine performance, efficiency, and longevity.