Platinum Racing Products – Nissan RD28, RB25 & RB30 Dry Sump Block Brace (PRP-PREC30D-4WD) Platinum Racing Products – Nissan RD28, RB25 & RB30 Dry Sump Block Brace (PRP-PREC30D-4WD) Platinum Racing Engine Cradle (PREC) Material & Construction: Made from high-grade aircraft quality billet aluminum Engineered for both strength and precision fitment Core Benefits: Converts 2WD RB/RD blocks to 4WD capability Allows direct fitment of a standard GTR-style sump with minor mods Brace Functionality: Overlays and reinforces the OEM main cap cradle Prevents main cap walk and movement Stops polishing of mating surfaces caused by cap shifting Structural Integrity: Retains factory one-piece main girdle, enhancing it with the PREC Prevents block damage from bearing cap movement and diff torque stress Material Compatibility Insight: Addresses issues with dissimilar metal expansion Cast iron blocks work best with cast iron-style caps Hard billet caps may cause shock rebound and detonation stress into rods Power Rating & Recommendations: Ideal for builds up to 1000 WHP For over 1000 WHP, use PRP’s Integrated Main Cap Brace Protection from Driveline Stress: Stops block twist and cracking from aftermarket diffs 40mm thick, webbed design disperses energy, preventing breakage Included & Optional Parts: Comes with a complete bolt kit ARP 1/2” bolt upgrade kit available (block machining required)Note: ARP upgrade needs additional machining to fit Why Choose the PREC: Prevents failure under high power and torque loads Adds serious reliability and peace of mind for high-performance RB builds Contact Us for further Information by filling out this FORM Be sure to follow our Instagram page for new offers and the latest products @Partspluguk
