BMW Differential and Gearing Upgrades for BMW 3 Series E92 (2007-2013)

The best way to gain a prominent advantage over the competition is to do it with the MFactory Helical Limited Slip Differential. The smooth consistent distribution of power to the wheels with the MFactory Helical LSD puts the power-to-the-ground and maximizes your vehicle's traction. A must for any car be it street, strip, or track.

What exactly does an LSD do you ask? Without an LSD your car is actually 1 wheel drive, in that it can't supply torque to both wheels at the same time and will only supply torque to the wheel with less grip, which is what the shortfall is to an open differential (what most vehicles have).

An LSD only lets the wheels spin at different speeds by a limited amount (typically this is a percentage difference) which is when the differential locks and both wheels get power. This is not how locked differentials work such as in off-road trucks which supply equal torque and rotational speed to both rear wheels at the same time, which can cause issues with handling.

Features:

An industry first, 30-day Feel the Torque™ money back guarantee and a Limited-Lifetime Warranty!
Forged and Cryo-tempered
Advanced Shot Peening technology for increased surface hardness
Designed to withstand the extreme shock loads of competition-level drag racing
Maintenance-free gears eliminate the need for special fluid or rebuilds associated with typical plate LSDs.
Lock-free operation ensures no adverse steering response.
**As a break-in procedure, we recommend changing the fluid after the first 3-400 miles of use.**

Includes $500 core charge to be refunded when we receive your rebuildable core.

SuperPro Differential Bushings for BMW

Upgrade your BMW's driveline with SuperPro differential bushings to enhance road feel and reduce driveline slop. While stock bushings excel at insulating the cabin from vibrations, they often lack in improving road feedback. SuperPro's differential bushings are engineered to better locate your driveline, providing a more connected driving experience and improved power delivery to the road surface. With over 40 years of experience in manufacturing suspension components and bushings, SuperPro leads the industry in polyurethane technology. These bushings are not just replicas of stock ones; they are meticulously developed to leverage the unique properties of SuperPro's polyurethane blend, ensuring top-notch performance. Expect consistent quality, precise fitment, and minimal increase in noise, vibration, and harshness (NVH) with SuperPro differential bushings.

• Enhances road feel and connection to the driving experience
• Reduces driveline slop for improved power delivery
• Superior polyurethane technology for optimal performance
• Meticulously developed and extensively tested for quality assurance
• Minimal increase in noise, vibration, and harshness (NVH)

Unleash the full potential of your BMW and gain a competitive edge with the Turner Motorsport MFactory Metal Plate Limited Slip Differential. Engineered for superior performance, this differential ensures a smooth and consistent distribution of power to the wheels, maximizing traction and putting the power firmly on the ground. The 1.5-way design provides torque transfer during acceleration and halfway through deceleration, making it an ideal choice for those focused on track use.

• Prominent advantage with the MFactory Metal Plate Limited Slip Differential.
• Maximizes traction for enhanced vehicle performance.
• 1.5-way design for torque transfer during acceleration and deceleration.
• Turns your car into a true 2-wheel drive, improving grip.
• Ideal for track enthusiasts seeking superior handling.

Upgrade your BMW's drivetrain with the Turner Motorsport MFactory Metal Plate Limited Slip Differential for unmatched toughness and performance.

BMW E60 E90 E92 Re Manufactured Front Differential from Turner Motorsport offers a reliable and cost-effective solution to restore your BMW's drivetrain performance. This high-quality, re-manufactured differential is engineered to meet or exceed OEM standards, ensuring smooth power delivery and optimal handling. Designed to replace a worn or damaged differential, this unit provides the dependability and durability you expect from Turner Motorsport's expertise in BMW components.

• Precision re-manufactured to meet OEM specifications
• Enhances power distribution and vehicle handling
• Cost-effective alternative to a new differential
• Designed for a smooth and quiet driving experience
• Backed by Turner Motorsport’s commitment to quality

Replace your worn front differential with the BMW E60 E90 E92 Re Manufactured Front Differential for a renewed driving experience and superior performance.

This is a complete differential to change the gearing of a manual transmission E90/E92 325i, 328i, or 330i (not for xi models) to a 3.64 ratio final drive. The standard gearing on the manual transmission cars is 3.15 or 3.23, making this E90 diff significantly shorter. This diff is from a 330i automatic where the gear ratio has to be shorter to make up for the transmission gearing differences and extra weight. This will dramatically improve acceleration on any 325i, 328i or 330i INSTANTLY! If you are looking for better off-the-line or rolling acceleration, and are willing to sacrifice a little top-speed (some of us don't get up to 150mph), this is one of the best ways to achieve it with almost no downside. There are few things that can improve your 0-to-60 and 0-to-100 times as much as shorter gearing, and this differential is clearly a best "bang-for-buck" solution for dramatically better acceleration. Since this is an Original BMW part it carries the same BMW two year warranty as any other new part. So there's no need to take a chance on a used part from a private seller. (former BMW part number 33107519944)

Changing gear ratio changes the RPM range for any given speed. Use the chart below for examples of speed vs RPM changes for the 3.64 diff.
 

2006 330i, 6-speed manual, stock 3.15 gears, 255/35-18" rear tires

Gear RatioGearSpeedRPM

40 MPH in 4th

3.154th40 MPH2,100 RPM

3.644th40 MPH2,400 RPM

70 MPH Cruise

3.156th70 MPH2,500 RPM

3.646th70 MPH2,900 RPM

5th Gear Speed @ 6,000 RPM

3.155th142 MPH6,000 RPM

3.645th123 MPH6,000 RPM

Why 5th? Because 6th does not have the mechanical advantage to get past wind resistance at these speeds - it is more of a cruise/overdrive gear. Using 5th for comparison purposes is much more relevant than having to take into account wind direction, resistance, grade, elevation, tire sizing, etc. These numbers are for comparisons among gear ratios only, not to determine what your E90 will top out at.2006-2011 325i or 328i, 6-speed manual, stock 3.23 gears, 255/35-18" rear tires

(click to expand)

Gear RatioGearSpeedRPM

40 MPH in 4th

3.234th40 MPH2,150 RPM

3.644th40 MPH2,400 RPM

70 MPH Cruise

3.236th70 MPH2,600 RPM

3.646th70 MPH2,900 RPM

5th Gear Speed @ 6,000 RPM

3.235th138 MPH6,000 RPM

3.645th123 MPH6,000 RPM

Speed in 5th gear at 6,000 RPM is for theoretical and comparison purposes only. It doesn't mean that these speeds are actually reachable.

A $100 refundable core charge must be added at the time of order. This core charge can be refunded when you ship your original diff back to us.

This item fits the following BMWs with manual transmission only:
2006-2011 E90 BMW 325i 328i 330i - Sedan
2006-2012 E91 BMW 325i 328i - Wagon
2007-2013 E92 BMW 328i - Coupe
2007-2013 E93 BMW 328i - Convertible