The OS Giken R-Series Triple Plate Clutch (OS-88) is a full motorsports-grade clutch system designed for high-horsepower Nissan RB engine applications using a 26-spline transmission. Built to handle extreme torque loads while maintaining OS Giken’s renowned precision and durability, this clutch is intended for serious competition, drag racing, and high-boost street builds.

Product Details

The R-Series OS-88 clutch utilizes a triple-plate metal disc configuration to dramatically increase torque capacity while keeping rotational mass low. This allows for rapid engine response, strong clamping force, and consistent engagement under extreme conditions.

Unlike conventional multi-plate clutches, OS Giken’s proprietary pressure plate and diaphragm design distributes load evenly across all discs, improving heat resistance and reducing wear. This results in superior reliability during repeated high-RPM launches and aggressive driving.

Features

• Triple-plate clutch system designed for extreme torque applications
• Built specifically for Nissan RB engines with 26-spline gearboxes
• High-strength metal friction discs for maximum holding power
• Lightweight design improves throttle response and engine acceleration
• Exceptional heat resistance for drag racing and circuit use
• Precision-engineered by OS Giken in Japan

Fitment Notes

• For Nissan RB engine applications using a 26-spline transmission
• Designed for high-power and competition-focused builds
• Not recommended for daily-driven street vehicles due to aggressive engagement
• Verify transmission spline count and compatibility prior to purchase

Installation / Recommendations

• Professional installation is strongly recommended
• Proper clutch adjustment is critical for performance and longevity
• Inspect or replace pilot bearing, release bearing, and related components
• Follow OS Giken installation and break-in procedures
• Ideal for vehicles with upgraded drivetrain and reinforced engine internals

The OS Giken R-Series OS-88 triple plate clutch is the ultimate solution for RB-powered vehicles pushing the limits of power and traction. When maximum torque capacity, durability, and race-ready performance are required, this clutch delivers uncompromising results.