RSS / Road Sport SupplyHarmonically Damped - Underdrive Performance Pulley Kit Including Belt
Application:- 911 Carrera - 997
- 911 Carrera - 996
- Cayman / Boxster - 987
- More
- Boxster - 987
- Boxster - 986
Product Description
The RSS Harmonically Damped Underdrive Pulley and new serpentine belt kit is ideal for engines that are running light weight flywheels, engines that are built - bored/stroked and engines that are driven hard.
- Offers improved HP & TQ by reducing drag from the power steering pump, A/C, water pump and alternator without detrimental effects on said ancillary systems.
- Dampens/reduces internal engine harmonics for improved engine performance, efficiency and longevity.
- Recommended for street or track use
Fits on all Porsche 986, 996, 987, 997 models EXCEPT 2.9L (multi hole crank pulley pattern). NOT for DFI 200 cars or any GT3/TT engine
Installation tool (wrench), new serpentine belt and new OEM Pulley Washer included (also requires modification / clearancing):
MADE IN USA