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Drivetrain› Differentials and Rear-End Components

Vargas

Billet Differential Lock-Down Kit

$557.47 $529.60 Save $27.87

SKU: VTT-F9X-LOCKDOWN

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

Moderate — 2–4 hours

Overview

The Vargas F9X X3/4M Billet Diff Lock Down Kit is a differential stabilization component designed to improve stability during launches and hard cornering. It features a 100% billet aluminum construction and an anodized finish for corrosion resistance and aesthetics. The kit uses existing mounting points, eliminating the need to remove the subframe or differential for installation.
Show original supplier description
The Vargas VTT-F9X-LOCKDOWN is a billet differential lock-down kit engineered to enhance differential stability during launches and hard cornering. Constructed from 100% billet 6061-T6 aluminum, the lockdown plate weighs a mere 1.5 lbs. It employs four connection points on the differential and three on the subframe to ensure positive diff location, effectively preventing movement during launches, which can help protect components like guibos. The anodized finish is available in multiple colors, offering corrosion resistance, durability, and enhanced aesthetics. The process involves removing four differential bolts, drilling two holes in the subframe for M8 riv-nuts, and then installing the lockdown. The exhaust system does not need to be moved. An experienced installer can typically complete the job in 30-45 minutes, while a more leisurely pace might take an hour or two. A riv-nut tool is necessary for installation. This product is specifically designed for the BMW F97 X3 M and F98 X4 M models equipped with the S58 3.0L engine.

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

BrandVargas
Part NumberVTT-F9X-LOCKDOWN
CategoryDrivetrain
5,000+ Trusted brands
1M+ Enthusiasts
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(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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