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All sets of 12 now 10% off regular price!
Red Line 75W140 is a full synthetic high-performance gear oil that is an excellent substitute for expensive factory fluid and an upgrade over off-the-shelf economy fluid. Red Line thoroughly evaluates the manufacturer's recommendations and only makes a fluid recommendation if their own product meets or exceeds the original specification. In many cases the Red Line synthetic will outperform the factory supplied fluids. We've been using Red Line Oil in our BMWs since we opened in 1994 and it remains our best selling BMW differential fluid. 75/140 is a specialized weight used for BMW M3, M5, and M6 models with the M Variable limited slip diff (all M models since 2001). Red Line fluid is used in nearly all E46 M3, E92 M3, E60 M5 we service as well as the custom differentials that we sell. It's great for the street where the polyol-ester base has natural lubricity and friction modifiers lead to smoother and quieter operation with lower operating temps than the factory fluid. We also use it in the track cars we build and prep. It may also be used in other specialized situations where a regular 75/90 will be too thin at elevated temperatures and your diff builder has approved a heavier weight oil.
Recommended for API GL-5, GL-6, MT-1, MIL-L-2105E, and SAE J2360. An alternative to the very expensive factory BMW SAF-XJ+FM diff fluid (#83222282583).
Stock rubber flex discs allow for a slight amount of give, especially under heavy acceleration and, depending on the amount of force applied, could potentially tear or split. This slight flex/give can prevent instantaneous transfer of force to the wheels, making accelerations unpredictable, or even lead to your vehicle being stuck on the side of the track. To combat this, IRP's Performance Flex Disc was developed. Made of CNC machined aluminum, this flex disc won't actually flex, and the polyurethane bushings will only provide a enough give to dampen some vibrations and prevent damaging the transmission. This is perfect for high torque applications such a drag cars and dedicated track cars that want immediate response and long term reliability.
96mm Diameter
Fits the following BMWs:
2008+ E82 BMW 128i
5/1986-1991 E30 BMW 325e 325es M3 - Manual Transmission
1987-1991 E30 BMW 325ix - Between Transmission & Transfer Case
1996-1998 E36 BMW 328i 328is 328ic - Manual Transmission only
1999-2005 E46 BMW 323i 323ci 325i 325ci - Automatic & SMG Transmissions only
1999-2005 E46 BMW 328i 328ci 330i 330ci - Manual, Auto, and SMG
2006+ E90 BMW 325i 328i 330i - Manual or Automatic Transmission
2006+ E91 BMW 328i - Manual or Automatic Transmission
2007+ E92 BMW 328i - Manual or Automatic Transmission
2007+ E93 BMW 328 - Manual or Automatic Transmission
1982-1983 E28 BMW 528e - Manual Transmission
5/1986-1988 E28 BMW 528e - Manual Transmission
1982-1988 E28 BMW 533i 535i 535is M5 - Manual Transmission
1991-1995 E34 BMW 525i - Automatic Transmission
1989-6/1992 E34 BMW 525i - Manual Transmission
1993-1995 E34 BMW 530i - Manual or Automatic Transmission
1989-1993 E34 BMW 535i - Manual Transmission
2001-2003 E39 BMW 525i - Automatic Transmission
1997-2003 E39 BMW 528i 530i - Manual or Automatic Transmission
1980-1989 E24 BMW 633csi 635csi M6 - Manual Transmission
2000-2006 E53 BMW X5 3.0i - for Rear Driveshaft
2000-2003 E53 BMW X5 4.4i X5 4.6is - for Rear Driveshaft
2007-2013 E70 BMW X5 3.0si X5 4.8i X5 xDrive30i X5 xDrive48i - for Rear Driveshaft
1997-2002 Z3 BMW Z3 2.3 Z3 2.5i - Automatic Transmission
1997-2002 Z3 BMW Z3 2.8 Z3 3.0i - Manual or Automatic Transmission
2003-2008 Z4 BMW Z4 2.5i - Automatic or SMG Transmission
2003-2008 Z4 BMW Z4 3.0i Z4 3.0si
Stock rubber flex discs allow for a slight amount of give, especially under heavy acceleration and, depending on the amount of force applied, could potentially tear or split. This slight flex/give can prevent instantaneous transfer of force to the wheels, making accelerations unpredictable, or even lead to your vehicle being stuck on the side of the track. To combat this, IRP's Performance Flex Disc was developed. Made of CNC machined aluminum, this flex disc won't actually flex, and the polyurethane bushings will only provide a enough give to dampen some vibrations and prevent damaging the transmission. This is perfect for high torque applications such a drag cars and dedicated track cars that want immediate response and long term reliability.
78mm Diameter with fitment for M10 nuts/bolts.
Fits the following BMWs:
1977-1983 E21 - 320i
1983-5/1986 E28 - 528e - Manual Transmission
5/1986-1988 E28 - 528e - Manual or Automatic Transmission
1984-1991 E30 - 318i, 318is, & 318ic
1984-1986 E30 - 325e/es (thru 04/1986)
1986-1991 E30 - 325i, 325is, 325ic
1987-1991 E30 - 325ix
1992-1997 E36 - 318i 318is 318ic - For Automatic Transmission only
1996-1998 Z3 - Z3 1.9 liter roadster
This product was last offered at the strikethrough price on
06-15-2026
This product was last offered at the strikethrough price on
06-16-2026
All sets of 12 now 10% off regular price!
Synthetic D4 ATF is suitable for use where Dexron III, Dexron II, or Mercon fluids are recommended. ATF D4 is similar to Red Line's MTL formula and can be used in many BMW manual transmissions where MTF or MTF-LT2 is called for. The D4 ATF provides significantly improved gear protection than most OEM oils. The balanced frictional characteristics provides smooth and consistent shifts for extended drain intervals. The superior stability compared to petroleum ATFs allows high-temperature operation without varnishing valves and clutches which leads to transmission failure.
Features:
Experience unparalleled performance with Red Line CV-2 Grease, expertly crafted to endure extreme temperatures and pressures found in high-performance wheel bearings and CV-joints. This premium grease surpasses both conventional and synthetic options with its exceptional high-temperature stability, superior extreme-pressure protection, and water resistance. Operating effectively in temperatures spanning from -100°F to 500°F, it offers outstanding oxidation and corrosion resistance, minimal evaporation and oil separation, and has minimal impact on rubber seals. Expect a remarkable 200% to 800% increase in bearing life due to the exceptional extreme-pressure performance and synthetic oil fluidity. Its red moly compound outshines black moly disulfide lubricants, ensuring superior lubrication.
Red Line CV-2 Grease finds application not only in automotive settings but also in industrial environments. It excels in high-temperature alternator bearings, high-speed ball bearings, conveyor bearings, worm gear drives, servo mechanisms, and other scenarios prone to fretting wear and corrosion. Its consistency and extreme-pressure performance endure high-temperature and high-shear conditions, extending the performance life of lubricated components. Despite darkening after high-temperature use, its efficacy remains unaffected. While compatible with some petroleum-based greases, it's recommended to clean out old grease thoroughly for optimal lubrication performance and to avoid grease incompatibility.