Project Kics WCB281A 28mm Compression Bolt Set M12x1.50 Gold 20 Pieces

The Project Kics WCB281A is a premium compression bolt set designed specifically for use with Project Kics open-ended through-type racing lug nuts. This innovative accessory features a unique built-in steel ball and spring mechanism housed within precision-machined aluminum bolts, creating enhanced locking action while adding a distinctive motorsport aesthetic to your wheel setup.

Key Features:

• M12 x 1.50 thread pitch for broad compatibility
• 28mm bolt length ideal for standard lug nut applications
• Gold anodized aluminum finish for premium appearance
• Built-in steel ball and spring compression system
• Complete 20-piece set for multi-vehicle applications
• Includes 6mm hex L-type wrench for installation
• Manufactured in Japan by KYO-EI to ISO standards

How It Works:

The compression bolt system installs onto the surplus threaded portion of Project Kics through-type racing nuts. The internal spring mechanism provides constant tension that improves the locking effectiveness of the attached lug nut while creating the appearance of extended hub bolts for a race-inspired look. The tightening torque specification is up to 4 N·m (0.4 kgf·m).

Important Installation Notes:

• Designed exclusively for open-ended Project Kics racing nuts (long type)
• Requires minimum 8mm of extra thread length beyond the lug nut
• Must be installed with lug nuts already attached to vehicle (retrofitting)
• Product must not protrude from vehicle fender after installation
• Regular retightening of both lug nuts and compression bolts is required
• To remove wheel, first remove compression bolt, then remove lug nut

Project Kics is part of the renowned KYO-EI industrial corporation, a trusted name in Japanese automotive accessories for over 50 years. All Project Kics products are designed and manufactured in Japan using premium materials to ensure reliability and longevity in both street and racing applications.