Technically more material in the 3R compared to the 5R would be my guess, the 3R is kind of a “hybrid” considering the material it’s made from.
[quote]JHM R Series Clutch Kit (Clutch Disc and Pressure Plate): Our R Series Clutch Kits feature your choice of 3 different clutch disc materials: Stage 1 R is a performance organic disc, Stage 3 R is a hybrid clutch disc with ceramic and metal backed organic material, and Stage 5 R is a 6-puck disc featuring our proprietary ceramic material. You can chose your clutch disc material from the drop down menu below.
We recommend our Stage 1 R Performance Organic Clutch Disc to those looking to get the best compromise between daily driveability and torque holding capacity. Our Stage 3 R disc offers the ultimate combination of daily driveability, torque holding capacity, and durability for back to back to back pulls. Our Stage 5 R Clutch Disc is the ULTIMATE clutch disc for your B6-B7 S4. The Stage 5 R is a 6-puck clutch disc featuring our proprietary performance ceramic material making it the most aggressive clutch solution that we offer to date. This is clutch disc that we are currently running in our in-house B7-RS4 AND that was featured in our customer’s B7-RS4 that set the world record time for the fastest and quickest B7-RS4 (see video above). This clutch disc can REALLY hold some power!
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