Drivetrain› Differentials and Rear-End Components

MFactory

Helical Limited Slip Differential

$1,149.95

SKU: SYNMF-TRS-05E92

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

Constructed from forged, high-nickel-chromium-molybdenum steel, this unit is diamond-cut for precise fitment and shot-peened for increased surface hardness. It offers maintenance-free operation and lock-free handling that does not adversely affect steering response.
Show original supplier description
The MFactory Helical Limited Slip Differential provides a competitive edge on the street, strip, or track by improving power transfer and traction. By utilizing advanced gear geometry developed through 3D CAD and FEA software, this torque-biasing differential helps transfer more power to the ground compared to stock components. The maintenance-free design eliminates the need for the special fluids and frequent rebuilds typically required by plate-type limited slip units. Engineered for durability, the unit is forged from SAE 4320 and SAE 9310 steel, which is double-tempered and super sub-zero treated to handle the extreme shock loads of competition-level drag racing. Installation requires consideration for specific vehicle configurations. The unit will not directly fit BMW 135i (MT), 335i (2007+ MT/DCT), or 335d models because the OEM ring gear is welded to the factory differential. For these specific applications, the ring gear must be machined to accept the new LSD, or a new bolted ring and pinion must be installed. MFactory offers professional services to meet OEM tolerances for this modification.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandMFactory
Part NumberSYNMF-TRS-05E92
CategoryDrivetrain
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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