JDC Under-Body Replacement Hardware Kit

The factory under-body panel and rocker panel molding fasteners are very susceptible to rust and oxidation, despite not driving on salted roads. With this kit, you can set your mind at ease that when your GT-R needs service, you won't have to worry about damaging these expensive panels due to "frozen" fasteners.

This Kit reduces time and effort spent on trying to remove oxidized fasteners while doing many under-body repairs, including but not limited to:
  • Alignments
  • Oil Changes
  • Exhaust system Repairs
  • And Many More...

Select from a full replacement kit including 124 Stainless Steel Pieces or 94 Titanium Pieces (and a packet of anti-seize), meant to replace all the main factory under-body fasteners, or you can select the rear section only, which replaces hardware in the carbon fiber rear diffuser only (52/36 Pieces). 

This kit also eliminates the possibility of future rust stains on these expensive carbon fiber or carbon-composite under-body panels!
 

Full Kit

  • (30) M6 Flange Bolts
  • (30) M8 Flange Bolts
  • (32) M6 Washers (Stainless Kit Only)
  • (30) M8 Washers (Stainless Kit Only)
  • (2) M6 Allen Head Bolts
  • (2) M6 Washers
  • (1) Tube of anti-seize

Rear Section Only

  • (8) M6 Flange Bolts
  • (16) M8 Flange Bolts
  • (10) M6 Washers (Stainless Kit Only)
  • (16) M8 Washers (Stainless Kit Only)
  • (2) M6 Allen Head Bolts
  • (2) M6 Washers
  • (1) Packet of anti-seize 

Font & Mid Section Only 

  • (22) M6 Flange Bolts
  • (14) M8 Flange Bolts
  • (22) M6 Washers (Stainless Kit Only)
  • (14) M8 Washers (Stainless Kit Only)
  • (1) Packet of anti-seize 

Installation Instructions can be found here.

Orders Containing Titanium

Colored Titanium:

  • All titanium is colored to order unless otherwise stated on the item listing. Please see the banner at the top of the website for the current estimated lead times. Production time can vary depending on your order size, products ordered, and the difficulty of custom options requested.

Bare Titanium/Stainless Steel:

  • In-stock items have a processing time of 3-5 business days.

For orders without titanium, our average processing time is 2-4 business days.

Customer Reviews

Based on 7 reviews
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J
Jose H.
The Best

Best mod to do 👍🏼

N
Nicole G. (Stevensville, US)
Good Quality

Update: Reached out to the company and turns out the incorrect washers were sent with the kit. They are sending the correct washers so the kit can be complete. Great customer service! The correct M6 washers will provide the needed support.
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First photo shows wide washers are provided with the bolt kit. The following photos show no washers installed with the bolts. Sure enough, upon receiving the kit, M6 washers were only provided and were as narrow as the flange of the bolt. So narrow, to the point where the washers would unevenly clamp the underbody panels. This does not provide the same coverage as the OEM washers. There were also no washers provided for the M8. The M6 bolts were also unnecessarily long, and should have been closer to OEM sizing. This kit could have been worse, but it really needs to be revised to include washers with similar width as the OEM to provide the needed support when torquing the bolts. Originally bought a second set for another GTR but will be returning. Will probably buy a different brand in the future to replace the ones I currently installed.

N
Nicole G.
Good Quality

Update: Reached out to the company and turns out the incorrect washers were sent with the kit. They are sending the correct washers so the kit can be complete. Great customer service! The correct M6 washers will provide the needed support.
--
First photo shows wide washers are provided with the bolt kit. The following photos show no washers installed with the bolts. Sure enough, upon receiving the kit, M6 washers were only provided and were as narrow as the flange of the bolt. So narrow, to the point where the washers would unevenly clamp the underbody panels. This does not provide the same coverage as the OEM washers. There were also no washers provided for the M8. The M6 bolts were also unnecessarily long, and should have been closer to OEM sizing. This kit could have been worse, but it really needs to be revised to include washers with similar width as the OEM to provide the needed support when torquing the bolts. Originally bought a second set for another GTR but will be returning. Will probably buy a different brand in the future to replace the ones I currently installed.

A
Adam B.
High quality parts

Thank you so much for the high quality parts and realistic turnaround time

JD Customs USA

JD Customs USA specializes in bespoke titanium pieces with virtually unlimited customization options. Known for vibrant colors and unmatched craftsmanship, we bring your creative visions to life. From precision to personalization, our commitment to quality ensures every piece exceeds expectations. At JD Customs USA, we don’t just create products – we deliver perfection.

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