Platinum Racing Products – Nissan RB Integrated Main Cap Cradle (PRP-NRBIMCC)

Platinum Racing Products – Nissan RB Integrated Main Cap Cradle (PRP-NRBIMCC)

Platinum Racing Products – Nissan RB Integrated Main Cap Cradle (PRP-NRBIMCC)

• Integrated Main Cap Brace – Revision 4 (Ductile Cast Iron, CNC Machined)

• All-in-One Design:

  • Combines billet main caps and block brace in a single CNC-machined unit

  • Built from ductile cast iron for optimal strength and thermal expansion

  • Latest evolution from PRP’s proven OEM overlay braces

• Engineered for Serious Power:

  • Designed for RB26 and RB30 engines

  • Ideal for 1000+ HP builds, but also suitable for street use

  • Greatly improves block twist resistance to prevent cracking

• Why It’s Better Than Billet Caps Alone:

  • Standard billet caps lack twist protection and are difficult to secure

  • Hard billet caps can rebound shock into crank and rods

  • Can shorten bearing and rotating assembly life unless alloy rods are used

  • Integrated brace disperses energy and absorbs shock

  • Eliminates main cap movement and risk of cracking

• Machining Requirements:

  • Requires 12mm or 1/2” bolt upgrade

  • Tunnel bore machining is required for proper fitment

  • Less machine work needed compared to standard overlay braces

• Compatibility & Configuration:

  • Supplied with bolt kit for either 2WD or 4WD setups

  • Compatible with RB25/26 4WD and RB30/28/25 RWD blocks

  • Can convert blocks to 2WD or 4WD with the appropriate bolt kit

• Additional Features:

  • O-ring aided block face for reliable sealing

  • Blackened surface treatment for corrosion resistance

• Why Choose This Brace:

  • Backed by 10+ years of testing and development

  • Offers unmatched strength, reliability, and performance for high-power RB builds

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