Heavy duty coil spring is one of the coil springs. Especially it is designed to carry more weight such as in cars and trucks. Whereas heavy duty coil springs normally thicker and shorter than stock springs. Moreover, the thickness may be same but there are fewer coils. It is called under the stronger springs.

Heavy duty coil spring is one of the coil springs. Especially it is designed to carry more weight such as in cars and trucks. Whereas heavy duty coil springs normally thicker and shorter than stock springs. Moreover, the thickness may be same but there are fewer coils. It is called under the stronger springs.