Porsche 911 Turbo Carrera / 930 Transmission Billet Side Cover (TRA 930 301 311 BSC PMS)

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930 Transmission Side Cover 1976-1988 Porsche 911 Turbo Carrera / 930 4 Speed Billet T-6061 Aluminum - Designed - Developed - Tested - And Precision Machined In-House Using Our Sta te-Of-The-Art Haas Mill! The Porsche Ring And Pinion Are Quite Small Given The Performance Capability Of The Vehicles. This Reduced Ring And Pinion Size - Use Of Aluminum As The Transmission Case Material - And Rear Engine Layout - Result In Greater Loading Of The Porsche Ring And Pinion. With So Much Weight On The Back Axle The 930 Is Capable Of Generating Huge Amounts Of Traction - This Is Especially True When Equipped With Wider - Taller And Stickier Modern Tires. This Grip Is Always Looking For A Way To Escape The Driveline System. Since Wheel Spin Is Not An Option The Torque Looks For Another Way To Escape The Driveline. This Results In Deflection Of The Ring Gear And Subsequent FlEx In The Transmission Side Cover. In Extreme Cases We Have Seen Cracked Side Covers - Less Severe Cases Result In Worn Pinion Shafts And Ring Gears. When Executing A Transmission Rebuild Or Adding A Limited Slip Differential We Recommend Updating To Our Billet Aluminum Side Cover. This Is A Simple And Effective Upgrade For Higher Performance Engine Updates Or Applications Where Overall Grip Levels Are Significantly Improved From Stock. - Patrick Motorsports USA - Sold Each - 1 Per Car - * Features Additional Ports For Oil Cooling * includes Ring Gear Thrust Bolt To Reduce Ring Gear Deflection Under Load * Optimized For Standard And Inverted Applications. * Replaces Part Numbers: 930 301 311 02 - Transmission Side Cover 1976-1988 911 Turbo / 930 Turbo 930/30 - 930/33 - 930/34 - 930/36 - 930/37 - 930/67Alternate Part Numbers: TRA 930 301 311 BSC PMS / TRA 930 301 311 BSC PMP / TRA-930-301-311-BSC-PMP / TRA.930.301.311.BSC.PMP / TRA930301311BSCPMP / TRA930301311BSCPMS Show more