Prothane 8-221 Front Control Arm Bushing Kit Honda Civic Si 99-00

The Prothane 8-221 is a front lower control arm (C-arm) bushing kit engineered for the 1999–2000 Honda Civic Si. Designed to replace the factory rubber bushings that degrade over time, this kit restores precise suspension geometry and eliminates the vague, unpredictable handling caused by worn, compliant OEM bushings.

Prothane manufactures these bushings from their proprietary polyurethane compound, which delivers significantly greater resistance to compression and deflection compared to stock rubber. The result is a suspension that holds alignment settings — caster and camber — firmly in place under hard cornering, braking, and acceleration loads.

Key Features:

• Direct-fit replacement for factory front lower control arm bushings on 1999–2000 Honda Civic Si
• Polyurethane construction resists deterioration from heat, oil, and road chemicals
• Superior compliance resistance maintains proper caster and camber alignment settings
• Improved steering response and handling precision over OEM rubber bushings
• Includes all necessary bushings for a complete front C-arm installation
• Lifetime warranty against defects in materials and workmanship

Whether building a dedicated autocross car or simply refreshing worn suspension components, the Prothane 8-221 provides the rigidity and durability needed to keep front suspension geometry consistent mile after mile.