Stock Timbren axles come with a vary mushy and pliable 45 gauge rubber spring. Overtime (1-2years) these stock springs will begin to sag due to what’s called “memory” -  A material’s ability to return to its original shape after being stretched or deformed, due to the elastic properties of its molecular structure.

These upgraded Timbren springs provide a 75 gauge rubber, which hold up to abuse better and lift the trailer up ~2 inches. These springs will prolong the overall spring life of the Timbren trailer suspension.