RB20 / RB25 / RB26 Slim Billet Valve Covers – Race Baffled
The most sought-after billet valve covers for the Nissan RB platform are finally here. Introducing the world’s first fully functional baffled RB valve covers, engineered from the ground up for performance, precision, and reliability.
Designed using state-of-the-art 3D scanning of OEM RB26 cam covers, these billet replacements perfectly replicate the original fitment while integrating advanced oil separation and airflow management technology. The CFD-optimized internal baffle system ensures proper oil control under extreme conditions — no more messy splash guards or unreliable aftermarket solutions.
This listing features the slim-style design, ideal for modern builds requiring extra clearance. (Note: Slim covers are not compatible with OEM plastic engine covers. Check our OEM-style version if you want to retain the factory cover.)
Key Features
World’s First Functional Baffled RB Covers: Fully integrated dual baffle system separates oil and air more efficiently than any traditional setup.
6061-T6 Aerospace Billet Aluminum: CNC-machined for extreme precision, durability, and thermal stability.
CFD-Optimized Internal Tunnels: Engineered oil flow channels to prevent oil splash and pressure build-up under boost.
SS316 Stainless Baffles: Durable, corrosion-resistant baffles for consistent long-term performance.
AN10 (-10AN) Ports: Built-in fittings for an external oil catch can or breather system.
Slim Design: Compact profile for added clearance around intake manifolds and turbo kits.
Custom Anodized Finishes: Choose from multiple color options or request a custom finish to match your build.
Complete Kit: Includes billet oil filler cap and 2x AN10 fittings free of charge.
Lifetime Limited Warranty: Engineered and built for life.
⚙️ Fits Nissan RB20, RB25, and RB26 engines.
📧 For color customization or special requests, contact sales@ichiban.engineering




























