Bilstein B6 4600 Suspension Rear Shock Absorber for 1975-1978 GMC C25 Suburban readylift-lift-springs 5 kg/mm Spring Rate -

5 kg/mm Spring Rate - Rear 18 kg/mm Spring Size - Front 62-280-10

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Bilstein B6 4600 Suspension Rear Shock Absorber for 1975-1978 GMC C25 Suburban readylift-lift-springs 5 kg/mm Spring Rate -Bilstein B6 4600 Shock Absorbers for the 1975 1978 GMC C25 Suburban are designed as a direct fit upgrade to OE Shock Absorbers on stock height light trucks and SUV's. These Shock Absorbers feature a monotube design which provides consistent fade free performance. B6 4600 Shock Absorbers utilize a unique, velocity sensitive, digressive piston which reacts to changing road conditions. All B6 4600 Shock Absorbers are tuned for each specific application