Underdrive pulley installation on a Porsche 987.1 Cayman: How to do it DIY

Subscribe: https://www.youtube.com/porscheclubofamerica?sub_confirmation=1 Visit: https://www.pca.org ----------------------------------------- Do you want a fairly cheap 10-15 horsepower? Did you replace your dual-mass flyhweel with a lightweight single-mass flywheel? Then you might consider installing a harmonically dampened underdrive pulley on your Porsche 987.1 Cayman or Boxster. In this video, Damon does just that, swapping out his stock pulley with a Road Sport Supply (RSS) harmonically dampened underdrive pulley. Here's how to do it. This guide was filmed with a 987.1 Cayman, but the process is almost exactly the same for a 986 and 987.1 Boxster. The process is similar on the 996 and 997.1 911 Carrera line, which the RSS kit was actually designed for, but accessing the pulley from the rear of the car is different and, frankly, easier. RSS Harmonically Damped Underdrive Pulley Kit (986, 987, 996, 997): https://roadsportsupply.com/608-harmonically-damped-underdrive-performance-pulley-kit-986-987-996-997/ IMPORTANT NOTE ON FITMENT of RSS 608: Fits on all Porsche 986, 996, 987, 997 models EXCEPT 2.9L (multi hole crank pulley pattern), DFI engines, GT2, GT3 and Turbo. This video may be used for guidance if you're reinstalling your original pulley or are installing the 997 Carrera S original equipment harmonically dampened pulley (which is the stock diameter). Here's the part number: 997.102.241.01 Watch our 2 quart oil sump extension installation video, performed on this very same 2007 Cayman: https://youtu.be/3R1dy_70wIE #Porsche #PorscheCayman #Porsche987 #DIY ----------------------------------------- Instagram: https://www.instagram.com/pcanational/ Facebook: https://www.facebook.com/porscheclubofamerica Twitter: https://twitter.com/PCANational

Added 4 May 2026