Nissan S15 Mission Gear Set (6th & Reverse): WPC Treatment Series
View the full price list for WPC treatments and options. (PDF)
See how WPC treatment improves surface hardness.
(View PDF)
The Science of Ultimate Gear Durability: WPC Treatment®
WPC Treatment is a revolutionary surface refinement technology. By bombarding the metal surface with ultra-fine spherical shots at high speeds (200m/s), we achieve three critical performance upgrades for your transmission gears:
Increased Fatigue Strength: Instantaneous heating and cooling during impact micro-refines the crystal structure, significantly preventing gear tooth breakage.
Higher Surface Hardness: Repeated plastic deformation creates a work-hardened layer, protecting gear faces from wear and pitting.
Superior Lubrication: Micro-dimples on the surface act as oil reservoirs, preventing oil film breakdown even during sustained high-speed 6th-gear cruising.
Precision Finishing Technology
Sirius Finish® (Advanced Polishing) This specialized method achieves a mirror-like smoothness (thousands-grit level) on complex gear shapes. It refines the WPC-strengthened surface to reduce mechanical drag and noise to the absolute minimum, ensuring smooth and quiet operation.
MoS2 Shot Treatment (Available Option) A binder-free process that fuses Molybdenum Disulfide directly to the metal. This provides a permanent solid lubricant layer for maximum reduction in sliding resistance.
Composite Treatment Benefits
(A) WPC + Sirius: Optimized for those seeking maximum gear strength combined with a highly refined surface for smoother engagement.
(B) WPC + MoS2: Focused on high strength and the massive reduction of friction.
(C) WPC + Sirius + MoS2: The ultimate racing specification, providing the lowest friction and highest durability available.
Note: WPC Treatment® and Sirius Finish® are patented technologies of
Fuji Manufacturing Co., Ltd.
We can customize the treatment process based on your specific racing conditions and requirements.
%3A+WPC+Treatment+Series){kind=link}