Project Kics WCB283S 12x1.25 28mm Compression Bolt Set - Silver (20 Pieces)

The Project Kics WCB283S Compression Bolt Set is an innovative lug nut security accessory designed to prevent the loosening of open-ended racing lug nuts through advanced compression technology. Each aluminum bolt features a unique built-in steel ball and spring mechanism that creates constant compression pressure, acting as a dynamic washer to maintain proper wheel fastener tension during aggressive driving conditions.

Key Features:

• M12 x 1.25 thread pitch for Honda, Acura, Toyota, and other Asian vehicles
• 28mm length suitable for most open-ended racing lug nuts
• Silver anodized aluminum construction for lightweight durability
• Built-in steel ball and spring compression system prevents lug nut loosening
• Compatible with Project Kics open-ended lug nut designs only
• Includes 6mm hex L-type wrench for installation
• Maximum tightening torque: 4 N·m (0.4 kgf·m)

Installation Notes:

• For use with through-type (long) lug nuts only
• Requires minimum 8mm of extra thread length above the lug nut
• Install compression bolts after lug nuts are properly torqued to vehicle
• Must not protrude from wheel when installed
• Regular inspection and retightening recommended for optimal performance

Manufactured by KYO-EI Industrial Corporation in Japan with over 50 years of automotive accessory expertise, these compression bolts meet the same exacting standards as Project Kics' motorsport-proven lug nuts used in Super GT and Formula Drift competition.