Project Kics WCB281K M12x1.5 28mm Compression Bolt Set Black 20 Piece

The Project Kics WCB281K is a precision-engineered compression bolt set designed exclusively for use with open-ended Project Kics racing lug nuts. This 20-piece set features M12x1.5 thread pitch with a 28mm length and black anodized aluminum finish.

Innovative Design:

• Built-in steel ball and spring mechanism inside aluminum bolt body
• Creates compression and spring action to help prevent lug nut loosening
• Provides washer effect through coil spring elasticity
• Enhances the appearance of racing lug nuts with extended bolt look

Technical Specifications:

• Thread Size: M12 x 1.5
• Length: 28mm
• Material: Aluminum construction with internal steel components
• Finish: Black anodized
• Quantity: 20 pieces per set
• Maximum Torque: 4 N·m (0.4 kgf·m)
• Requires minimum 8mm excess screw length for proper installation

Installation Notes:

• Exclusively for use with through-style (long type) open-ended lug nuts
• Must be installed after lug nuts are mounted to vehicle
• Includes 6mm hex L-type installation wrench
• Regular retightening recommended for optimal performance
• Remove compression bolts before removing lug nuts

Manufactured in Japan by KYO-EI Corporation, Project Kics compression bolts combine functionality with premium aesthetics, making them ideal for both street and racing applications where wheel security and appearance matter.