Sikky Quick Change Differential Subframe Kit Nissan 350z / Infiniti G35

Drivetrain Packages

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Part #: SIK-WSF-03

The Sikky 350Z Quick Change Rear Kit is a crucial addition when building your race car to perform at the highest level. This setup gives the user the ability to change their gear ratio in less than 5 minutes by simply removing the rear cover of the rear end. This is a huge advantage when dialing in your setup at the track to make sure your gearing is in the sweet spot and your not forced to shift at inopportune times. It’s also designed to handle massive amounts of power. Customers have put this setup to use on cars with well over 1200 hp.

We designed, developed, and tested our subframe kit to withstand the most rigorous conditions. Using our advanced technology like our FARO 3D scanning arm and Solidworks CAD software we design and build every sub frame assembly to precise tolerances. Perfect rear placement ensures that the differential is placed dead center every time for optimum CV joint angles while also remaining Formula Drift legal. Built to handle all the abuse a high HP car can put out. The subframe comes preassembled with the necessary brackets welded on and the entire assembly powder coated black. You have the option to add a Sikky Winters IRS rear, Sikky solid subframe bushings, driveshaft, and/or heavy duty axles. If you’re looking to gain an edge over the competition then the Sikky Winters IRS Subframe Kit is what you need!

Kit Info:

  • Formula Drift Legal
  • NO Subframe Core Required
  • CNC Machined Mounting Brackets
  • Fully Assembled using our FARO Arm to Ensure Absolute Perfect Rear Placement
  • Black Powder Coated
  • Includes all Necessary Hardware
  • Fuel Cell or Fuel Tank Relocation Required in most cases


Any returns for an exchange or refund will be allowed within 30 days from the receipt of your order and must be authorized prior to shipping with an RMA Number (Return Merchandise Authorization). To receive your return instructions and RMA# please use our online form under Returns and Exchanges! Once you receive your return instructions please ship out the item at your earliest convenience and provide the tracking number to your customer service rep. The customer will be responsible for all shipping fees. Before shipping your product back please make sure you package it up exactly how you received it and in all of its original packaging. All items must be in brand new and resalable condition. Once the item is received it will be inspected and a credit will be issued accordingly. All returns are subject to a 15% restocking fee. Any returns received without an RMA# will be charged a restocking fee and any shipping fees associated with the return. An item that does not ship directly from IIR's warehouse is considered a "special order" item and no returns will be authorized.

Sikky Quick Change Differential Subframe Kit Nissan 350z / Infiniti G35
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