Mercedes® Bilstein B4 Shock, Rear, With or Without Sport Suspension, 2005-2010 (171)

For the performance-minded driver, Bilstein shocks deliver absolute mastery of the road surface. Bilstein's instantaneously self-adjust to changing road surface. Performance does not incline from age, use or heat - requiring no compensating manual adjustments. Where other shock absorbers mount the narrow piston rod at the top where it must absorb the twin forces of the compression and rebound as well as the stress of tremendous sideloads from cornering, Bilstein places the piston rod inside the strut tube. This means it is completely protected from side load stress and contamination by road matter. The thicker, stouter steel body of the shock dissipates side loads very effectively. Bilstein ultra-efficient monotube design also operate at much cooler temperatures than other shocks, which allows more rapid heat dissipation. NOTE: Cannot Ship Via Air