Synchronizer rings for PORSCHE 911 turbo 930 915 4-speed gearbox SET Now available as a set Description: If shifting between gears becomes difficult, the synchronizer rings are usually worn and should be replaced. Here you will find high-quality replacements. Please refer to the "Fits" information for model-specific use per gear. Complete set of synchronizer rings for your 911 turbo. The matching gasket set can be found under #8417 . We also offer synchro rings individually and as sets for the following transmission types: 901 transmission: #4448 (1st-5th gear) 914 transmission (except 914/6): #4448 (1st-5th gear) 911 turbo / 930 transmission: #8979 (1st+2nd gear), #8980 (3rd+4th gear), Set #1446 915 transmission (2.4-2.7): #8984 (1st+2nd gear), #4448 (3rd-5th gear), Set #1447 915 transmission (3.0-3.2): #8985 (1st gear), #8984 (2nd gear), #4448 (3rd-5th gear), Set #1445 G50 transmission (3.2): #16511 (1st + 2nd gear), #15168 (3rd-5th gear + reverse), Set #1448 G50/G64 transmission 964: #16511 (1st + 2nd gear), #15168 (3rd-5th gear + reverse), Set #1448 G50/G64 transmission 993: #16507 (1st + 2nd gear), #15167 (3rd-5th gear + reverse), Set #1449 The specified synchro rings are not compatible with the G50 transmission and the Sportomatic variants! The variant offered here can be identified by the title and the "Fits:" information! Brand Information: Partworks GmbH is a German company specializing in the reverse engineering and distribution of spare parts for Porsche. We place particular emphasis on high quality and excellent service. More than 130,000 car enthusiasts worldwide are already satisfied customers of the Paderborn-based company. As specialists in classic car spare parts, we are aware of our customers' high quality standards. Therefore, you can be confident that our reverse-engineered parts meet the exact specifications of the original and, in some cases, even exceed them. With our own engineering department and internal testing, we can guarantee the reliability of our products. Finally, our DIN ISO 9001-certified quality management system confirms the thoroughness of our work. When you see the manufacturer's name, partworks indicates either an in-house development or an original equipment manufacturer (OEM) part (OE quality). OEMs are the manufacturers who supplied the original product to the vehicle manufacturer but cannot sell it under their own brand on the open market. Reference numbers: 930.302.303.00 930.302.301.10 930.302.301.00 Scope of delivery: As shown in the illustration Suitable for: 911 turbo / 930