H & R + Rancho RS5000x - Bumpstop extensions ?

[Canada_TJ]

Hello everyone,
Gonna be installing the H and R (52107) springs with the Rancho RS5000x shocks (RS55128 & RS55240).
I currently have 32.1 inch tires on. Was wondering if there was a chart or rule of thumb for bumpstop extensions vs lift height and tire size.
Thanks !

 

[Ir0nH3@d]

there isnt a chart that I know of due to the vast number of variables involved.

since you are replacing the springs in this process, the best option is to get the frame up on jack stands, get the coils removed, install the new shocks, and cycle the axles to determine the bump stop extension needed to prevent your shocks from fully collapsing or any other component from making contact. note, you are looking for the bumpstop cup to make contact, not the jounce bumper.

I like the zone universal bumpstop extensions as they mount to the lower pad and are easy to trim down to the exact size needed. plus they are ~$15 per pair.

 

[Canada_TJ]

there isnt a chart that I know of due to the vast number of variables involved.

since you are replacing the springs in this process, the best option is to get the frame up on jack stands, get the coils removed, install the new shocks, and cycle the axles to determine the bump stop extension needed to prevent your shocks from fully collapsing or any other component from making contact. note, you are looking for the bumpstop cup to make contact, not the jounce bumper.

I like the zone universal bumpstop extensions as they mount to the lower pad and are easy to trim down to the exact size needed. plus they are ~$15 per pair.

Thanks for the Info !
Much appreciated

 

[jjvw]

there isnt a chart that I know of due to the vast number of variables involved.

since you are replacing the springs in this process, the best option is to get the frame up on jack stands, get the coils removed, install the new shocks, and cycle the axles to determine the bump stop extension needed to prevent your shocks from fully collapsing or any other component from making contact. note, you are looking for the bumpstop cup to make contact, not the jounce bumper.

I like the zone universal bumpstop extensions as they mount to the lower pad and are easy to trim down to the exact size needed. plus they are ~$15 per pair.

This is all good, except the part about stopping the shock from reaching full compression. Doing so is reducing shock travel for no good reason.

Let the shock be the limit to travel. The squishy jounce is there to slow down the last bit of travel speed before full shock compression.