Platinum Racing Products – Nissan RD28 RB30 Dry Sump and RB25 Wet Sump Block Brace (PRP-NRDRBDSWSBB)

Platinum Racing Products – Nissan RD28 RB30 Dry Sump and RB25 Wet Sump Block Brace (PRP-NRDRBDSWSBB)

Platinum Racing Products – Nissan RD28 RB30 Dry Sump and RB25 Wet Sump Block Brace (PRP-NRDRBDSWSBB)

• Platinum Racing Engine Cradle (PREC)

• Material & Construction:

  • Made from hi-grade aircraft quality billet aluminum

  • Precision-engineered for high-performance RB/RD engine builds

• Versatile Fitment:

  • Allows 2WD RB/RD engine blocks to be converted to 4WD

  • Compatible with standard GTR-type sump after minor modifications

  • Also perfectly suited for current 2WD applications

• Function & Support:

  • Overlays the factory main cap cradle

  • Eliminates main cap walk — no more polished mating surfaces

  • Ties in OEM main cap cradle, locking everything in place

• Structural Reinforcement:

  • Works with the factory one-piece main girdle for maximum support

  • Prevents damage caused by bearing cap movement or twist

  • Helps maintain crank alignment and engine reliability under stress

• Material Compatibility Insight:

  • Addresses expansion/contraction issues from dissimilar metals

  • Recommends matching cast iron caps with cast iron blocks

  • Avoids excessive shock rebound from overly hard billet caps

• Recommended Power Limits:

  • Ideal for builds up to 1000 WHP

  • For higher power, upgrade to PRP’s Integrated Main Cap Brace

• Protection from Diff Load Stress:

  • Prevents block twist and cracking from aftermarket diffs

  • Features a 40mm thick webbed brace to absorb and dissipate energy

  • Helps eliminate common issues like block snapping under load

• What’s Included:

  • Comes with complete bolt kit

  • ARP 1/2” upgrade kit available separately
    Note: Requires machining for installation

• Why Choose PREC:

  • Adds serious durability to your RB/RD engine block

  • Reduces risk of crank misalignment, cap movement, and block failure

  • A must-have brace for serious builds aiming for long-term reliability

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