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).

Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.

This item fits the following BMWs: 

E34 BMW 525i 525iT 530i 535i

Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.

This item fits the following BMWs: 

E46 BMW 325xi 330xi

Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.

This item fits the following BMWs: 

E46 BMW 325xi 330xi

Choose GSP for Your Hub Assembly, Axle Shaft, and Loaded Strut Needs

Since 2004, GSP has been a trailblazer in the North American axle industry. With an extensive range of applications, a wide SKU count, and a track record of introducing the latest applications ahead of the competition, GSP is the go-to choice. In 2010, GSP expanded into hub assemblies and swiftly earned the trust of the industry, becoming the most reliable brand.

When it comes to your hub assembly, axle shaft, and loaded strut needs, you can have full confidence in GSP's expertise.

Key Features:

• Superior quality based on long term development through ISO/TS16949 certifications
• The strictest quality control standards to ensure the best end result to the customer
• Constructed of high-quality materials for a superior product at a low price
• Designed for application-specific needs
• Consistently driving to offer the broadest catalog

One of the most satisfying upgrades you can make to your BMW is to its factory shifter mechanism. By reducing the shifter's throw, you can give your manual transmission BMW a sportier, more precise feel. However, with so many different "short shift kits" out there, how can you be sure you're making the right decision? With the introduction of the Rogue Engineering OCTANE short shift kit, the choice is now crystal clear!

Rogue Engineering refuses to compromise with "lever substitution" as a method of short shift kit development. Rather than using actual test vehicles for their products, some companies actually dig through OEM factory parts diagrams to determine which factory levers can be substituted with others. This "lever substitution" method of introducing product is unacceptable. These shift kits have been developed and perfected through years of experience in proven short shifter technology, by Co-Founder, Ben Liaw. As longtime BMW enthusiasts know, Ben was single-handedly responsible for introducing and developing the idea of affordable, BMW factory-like, short shift kits for late model BMWs (BL/SS for those young enough to remember!). 

Rogue Engineering idea of a short shift kit is not substituting levers in place of factory ones just because "they fit". Throughout the 80s until recently, BMW was notorious for using only a few specific shifter levers for their manual transmission vehicles. For other companies, making just a few "replacement levers" and offering them in place of those factory part numbers was an easy way of calling it a short shift kit. Unfortunately, for those companies, BMW started using many different part numbers making it more difficult to just "swap in a lever".

Rogue Engineering only develops it's short shift kit with test vehicles in their facility, testing numerous prototypes, offering others to test it before settling on its final design. They feel that this old school, real world testing is the best way when modifying OEM ergonomic, sensory-based controls.

One of the most satisfying upgrades you can make to your BMW is to its factory shifter mechanism. By reducing the shifter's throw, you can give your manual transmission BMW a sportier, more precise feel. However, with so many different "short shift kits" out there, how can you be sure you're making the right decision? With the introduction of the Rogue Engineering OCTANE short shift kit, the choice is now crystal clear!

Rogue Engineering refuses to compromise with "lever substitution" as a method of short shift kit development. Rather than using actual test vehicles for their products, some companies actually dig through OEM factory parts diagrams to determine which factory levers can be substituted with others. This "lever substitution" method of introducing product is unacceptable. These shift kits have been developed and perfected through years of experience in proven short shifter technology, by Co-Founder, Ben Liaw. As longtime BMW enthusiasts know, Ben was single-handedly responsible for introducing and developing the idea of affordable, BMW factory-like, short shift kits for late model BMWs (BL/SS for those young enough to remember!). 

Rogue Engineering idea of a short shift kit is not substituting levers in place of factory ones just because "they fit". Throughout the 80s until recently, BMW was notorious for using only a few specific shifter levers for their manual transmission vehicles. For other companies, making just a few "replacement levers" and offering them in place of those factory part numbers was an easy way of calling it a short shift kit. Unfortunately, for those companies, BMW started using many different part numbers making it more difficult to just "swap in a lever".

Rogue Engineering only develops it's short shift kit with test vehicles in their facility, testing numerous prototypes, offering others to test it before settling on its final design. They feel that this old school, real world testing is the best way when modifying OEM ergonomic, sensory-based controls.

Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.

This item fits the following BMWs: 

1992-1998 E36 BMW 318i 318ic 318is 318ti 323is 323ic 325i 325ic 325is 328i 328ic 328is M3 M3 Convertible 
1999-2005 E46 BMW 323i 323ci 325i 325ci 328i 328ci 330i 330ci 
3/1991-1995 E34 BMW 525i 530i 535i 540i 
11/1991-1994 E32 BMW 735i 735il 740o 740il 750il 
3/1992-1999 E31 BMW 840ci 850ci 850csi 
1996-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe

Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.

This item fits the following BMWs: 

E39 BMW 525i 528i 530i 

E60 BMW 525i 525xi 528i 528i xDrive 530i 530xi 535i 535xi 545i 550i 

E63 BMW 645Ci 650i

Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.

This item fits the following BMWs: 

E46 BMW M3

E85 BMW Z4M 

Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.

This item fits the following BMWs: 

E30 BMW M3

E28 BMW 524td 528e 533i 535i 535is M5

E24 BMW 633CSi 635CSi M6

Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.

This item fits the following BMWs: 

E46 BMW M3

E85 BMW Z4M

Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.

This item fits the following BMWs: 

E36 BMW 318is 

Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.

This item fits the following BMWs: 

E53 BMW X5

Since established in 2004, GSP North America has positioned itself as a leading supplier of New Axles in North America.GSP’s new axle program consistently offers the best application coverage, most SKU count, and more new numbers than any other competitors. GSP’s hub assembly program was introduced to North America market in 2010 and has grown into one the most trustable programs in US market.

This item fits the following BMWs: 

E39 BMW 525i 528i 530i 540i

E52 BMW Z8