ISR Performance CNC Billet Diff Brace - Nissan 350Z / Infiniti G35

Our 2-piece CNC billet aluminum diff brace for the 350Z and G35. Adds a second mounting point to the differential where the factory only uses a single rear stud, which dramatically reduces diff rotation and driveline flex under hard launches and aggressive drift entries.

What It Does

The factory 350Z and G35 diff hangs off a single rear stud that ties it to the subframe. Under hard acceleration or aggressive directional changes, that single mount point lets the diff rotate and the entire driveline flex, which dulls response and wastes power on the way to the wheels. Our 2-piece brace clamps the diff with a second mount on the opposite side, locking it in place for a noticeably more positive, firmer driveline feel. The 2-piece design also makes installation manageable without dropping the entire subframe.

Fitment

Fits the following platforms:

• Nissan 350Z, all model years (2003-2008)
• Infiniti G35 Sedan (2003-2006)
• Infiniti G35 Coupe (2003-2007)

Works with OEM 350Z and G35 diff covers, and clears the larger finned NISMO diff cover. Designed to clear the following ISR exhaust systems:

• 350Z: GT Single, EP Dual, and ST series
• G35 Coupe: GT Single and EP Dual
• G35 Sedan: GT Single and MBSE

What's in the Box

• 2-piece CNC billet diff brace
• All necessary hardware
• Subframe spacer sleeve

Product Details

Brand: ISR Performance

Part Number: IS-Z33-Diffbrace

Type: Differential Brace, 2-Piece

Vehicle Fitment: Nissan 350Z (2003-2008), Infiniti G35 Sedan (2003-2006), Infiniti G35 Coupe (2003-2007)

Material: CNC-machined billet aluminum

Diff Cover Compatibility: OEM 350Z/G35 diff covers and NISMO finned diff cover

Sold: As a complete kit (brace + hardware + subframe spacer sleeve)

Legality: Off-road and competition use only