SKU: 5355050647

PRP Dry Sump Block Brace - Nissan RB25/RB30/RD28

Sale price$1176.47 Regular price$1307.19
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 5 - Sep 10

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For Your Every Summer RSVP, with Code: SUMMER15

Description

PRP Dry Sump Block Brace - Nissan RB25/RB30/RD28The Platinum Racing Engine Cradle (PREC) has been constructed from hi grade aircraft quality billet aluminum and the product has several features that benefit. Over and above converting your 2wd RB RD engine block to 4wd. With the kit provided and after a few modifications, a standard GTR type sump will bolt straight on. The Platinum Brace overlays and supports the factory main cap cradle, and main Main Caps cease walking!, have you ever noticed shiny

The Platinum Racing Engine Cradle (PREC) has been constructed from hi-grade aircraft quality billet aluminum and the product has several features that benefit.

Over and above converting your 2wd RB/RD engine block to 4wd. With the kit provided and after a few modifications, a standard GTR type sump will bolt straight on.

The Platinum Brace overlays and supports the factory main cap cradle, and main Main Caps cease walking!, have you ever noticed shiny mating surfaces of your block and main caps? The mains are walking and moving enough to polish the mating surfaces. The platinum block brace ties in the OEM cap cradle and stops the walk.

The standard main girdle is a great design and should be retained as a one-piece item, then strengthened with the PREC, as main bearing cap walk, or movement may be experienced otherwise. There is also a valid argument for the use of a similar metal when it comes to the main caps and expansion/contraction of dissimilar metals when you consider a billet cap, different metals expand at different rates, Cast Iron blocks should have cast iron main caps, the harder the cap, the less shock is absorbed, the more detonation becomes critical as it has no place to go but into the rods.

We recommend this system up to 1000wheel HP, then our integrated main cap brace over 1000 hp.

Aftermarket diffs crack blocks! it’s a fact, the Platinum Block brace will not only stop block twist but stops the diff snapping the block under load, energy is dissipated through your 40mm thick integrated and webbed brace, blocks cracking and snapping become a thing of the past!

The bolt kit is included with the brace however the APR upgrade kit is extra if it is required 

*PLEASE NOTE: 1/2 inch ARP upgrade, requires block machining for fitment.

Any questions please ask.  

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 5355050647

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4.1 ★★★★★
Based on 14 reviews
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Honest_buyer
Cuba, US
★★★★★ 5
Good product overall
Size: 60 Count (Pack of 1)
Works really well, but only for a while. After about 3 or 4 weeks, it begins to stop working. Side effects-can leave you groggy if you don't get enough sleep. Helps you sleep better for a month or so. No odor. Good value for money, they don't cost a lot. Just melatonin and veggie caps. No other ingredients as far as I read
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Reviewed in the United States on May 15, 2026
K
Verified Purchase
Kathy B.
Pawtucket, US
★★★★★ 5
Works well I will continue buying them
Size: 60 Count (Pack of 1)
This melatonin gives me a good nights sleep. I thought it was 3 mg but it is not, my mistake! I take two of these because 3 mg doesn't do it for me. I sleep like a baby when I take these and wake up feeling rested.
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Reviewed in the United States on April 4, 2026
A
Verified Purchase
Amazon Customer
San Leandro, US
★★★★★ 5
Incredibly Helpful for Sleep & Not Hard to Swallow w/Water or w/o
Size: 60 Count (Pack of 1)
I shouldn't be taking these due to certain medical conditions, but they taste like nothing, super effective - like I fall asleep within maybe 30-45 minutes - and I STAY asleep watch is a lot more than I can say for any other melatonin products that I've used. Again, I do have restrictions, so I only take them once in a while, but so does my roommate and he says the same. They're small enough to not be hard to swallow as well. I've recommended them to some of my friends and family and we're all in agreement. I mean, of course, consult your doctor first, but like, these have been one of the most helpful supplements for sleep which is super important to me
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Reviewed in the United States on December 20, 2025
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Verified Purchase
Dai
Louisville, US
★★★★★ 5
A full nights sleep
Size: 60 Count (Pack of 1)
This product helps keep me asleep throughout the whole night, not just in the beginning.
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Reviewed in the United States on April 19, 2026
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Verified Purchase
Robert Willman
Los Angeles, US
★★★★★ 5
good vendor
Size: 60 Count (Pack of 1)
fabulous slow release ,,,, good quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026

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