Off-Road Racing Shocks Shim Stack Examples

The following table contains several sample compression and rebound shock valving shim stacks ranging from extra soft to extra firm.
Please also make sure to review our Shock Valving Guide and Shock Tuning Guide.




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Extra Light Compression Stack
Extra Light Rebound Stack



Order
Thickness
Dia.
Zone
1
.008"
------------ 1.75" ------------
LSCD
2
.008"
---------- 1.60" ----------
LSCD
3
.008"
-------- 1.45" --------
MSCD
4
.008"
------ 1.30" ------
MSCD
5
.008"
---- 1.15" ----
HSCD
6
.008"
-- 1.00" --
HSCD

Order
Thickness
Dia.
Zone
6
.008"
-- 1.00" --
HSRD
5
.008"
---- 1.15" ----
HSRD
4
.008"
------ 1.30" ------
MSRD
3
.008"
-------- 1.45" --------
MSRD
2
.008"
---------- 1.60" ----------
LSRD
1
.008"
------------ 1.75" ------------
LSRD

Light Compression Stack (Flutter)
Light Rebound Stack



Order
Thickness
Dia.
Zone
1
.010"
------------ 1.75" ------------
LSCD
2
.010"
------ 1.30" ------
LSCD
3
.010"
------------ 1.75" ------------
MSCD
4
.010"
---------- 1.60" ----------
MSCD
5
.010"
-------- 1.45" --------
HSCD
6
.010"
------ 1.30" ------
HSCD
7
.010"
---- 1.15" ----
HSCD

Order
Thickness
Dia.
Zone
6
.008"
-- 1.00" --
HSRD
5
.008"
---- 1.15" ----
HSRD
4
.008"
------ 1.30" ------
MSRD
3
.010"
-------- 1.45" --------
MSRD
2
.010"
---------- 1.60" ----------
LSRD
1
.010"
------------ 1.75" ------------
LSRD

Light/Med Compression Stack (Flutter)
Light/Med Rebound Stack



Order
Thickness
Dia.
Zone
1
.010"
------------ 1.75" ------------
LSCD
2
.015"
------ 1.30" ------
LSCD
3
.010"
------------ 1.75" ------------
MSCD
4
.010"
---------- 1.60" ----------
MSCD
5
.015"
-------- 1.45" --------
HSCD
6
.015"
------ 1.30" ------
HSCD
7
.015"
---- 1.15" ----
HSCD

Order
Thickness
Dia.
Zone
6
.010"
-- 1.00" --
HSRD
5
.010"
---- 1.15" ----
HSRD
4
.010"
------ 1.30" ------
MSRD
3
.010"
-------- 1.45" --------
MSRD
2
.010"
---------- 1.60" ----------
LSRD
1
.010"
------------ 1.75" ------------
LSRD

Standard Compression Stack
Standard Rebound Stack



Order
Thickness
Dia.
Zone
1
.015"
------------ 1.75" ------------
LSCD
2
.015"
---------- 1.60" ----------
LSCD
3
.015"
-------- 1.45" --------
MSCD
4
.015"
------ 1.30" ------
MSCD
5
.015"
---- 1.15" ----
HSCD
6
.015"
-- 1.00" --
HSCD

Order
Thickness
Dia.
Zone
6
.012"
-- 1.00" --
HSRD
5
.012"
---- 1.15" ----
HSRD
4
.012"
------ 1.30" ------
MSRD
3
.012"
-------- 1.45" --------
MSRD
2
.012"
---------- 1.60" ----------
LSRD
1
.012"
------------ 1.75" ------------
LSRD

Medium/Firm Compression Stack
Medium/Firm Rebound Stack



Order
Thickness
Dia.
Zone
1
.015"
------------ 1.75" ------------
LSCD
2
.015"
---------- 1.60" ----------
LSCD
3
.015"
-------- 1.45" --------
MSCD
4
.020"
------ 1.30" ------
MSCD
5
.020"
---- 1.15" ----
HSCD
6
.020"
-- 1.00" --
HSCD

Order
Thickness
Dia.
Zone
6
.012"
-- 1.00" --
HSRD
5
.012"
---- 1.15" ----
HSRD
4
.012"
------ 1.30" ------
MSRD
3
.015"
-------- 1.45" --------
MSRD
2
.015"
---------- 1.60" ----------
LSRD
1
.015"
------------ 1.75" ------------
LSRD

Firm Compression Stack
Firm Rebound Stack



Order
Thickness
Dia.
Zone
1
.020"
------------ 1.75" ------------
LSCD
2
.020"
---------- 1.60" ----------
LSCD
3
.020"
-------- 1.45" --------
MSCD
4
.020"
------ 1.30" ------
MSCD
5
.020"
---- 1.15" ----
HSCD
6
.020"
-- 1.00" --
HSCD

Order
Thickness
Dia.
Zone
6
.015"
-- 1.00" --
HSRD
5
.015"
---- 1.15" ----
HSRD
4
.015"
------ 1.30" ------
MSRD
3
.015"
-------- 1.45" --------
MSRD
2
.015"
---------- 1.60" ----------
LSRD
1
.015"
------------ 1.75" ------------
LSRD

Extra Firm Compression Stack
Extra Firm Rebound Stack



Order
Thickness
Dia.
Zone
1
.020"
------------ 1.75" ------------
LSCD
2
.020"
---------- 1.60" ----------
LSCD
3
.020"
-------- 1.45" --------
MSCD
4
.015"(2)
====== 1.30" ======
MSCD
5
.015"(2)
==== 1.15" ====
HSCD
6
.015"(2)
== 1.00" ==
HSCD

Order
Thickness
Dia.
Zone
6
.015"
-- 1.00" --
HSRD
5
.015"
---- 1.15" ----
HSRD
4
.015"
------ 1.30" ------
MSRD
3
.020"
-------- 1.45" --------
MSRD
2
.020"
---------- 1.60" ----------
LSRD
1
.020"
------------ 1.75" ------------
LSRD


Shock Valving Zones

LSCDLow Speed Compression DampingLSCDLow Speed Rebound Damping
MSCDMedium Speed Compression DampingMSCDMedium Speed Rebound Damping
HSCDHigh Speed Compression DampingHSCDHigh Speed Rebound Damping



Other Shock Valving and Tuning Resources

Crawlpedia Shock Shootout
Shock Rebuild Instructions
Shock Tuning Guide
Shock Valving Guide
Coilover Spring Rate Calculator
Shop: ustom Built and Tuned Shocks
Shop: Shock Tuning Parts (Shims)






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