100 Series Toyota Land Cruiser & Lexus LX470 Torsion Bar Comparison Table

100 Series Toyota Land Cruiser & Lexus LX470 Torsion Bar Comparison Table

See also the ih8mud thread

Cruiser Patch 29mm torsion bars (1160mm long, petrol)

Cruiser Patch 27mm AHC torsion bars (1160mm long, petrol)

curated by Patch Agan

Part No. (LH, RH) Frame Variant Details Length Diameter % stiffness of OEM AHC bars* Material Notes
LH: 48162-60020
RH: 48161-60020 		HDJ100 w/ AHC 1210mm 25.5mm 100% - Delisted
LH: 48162-60010
RH: 48161-60010		 HDJ100 1210mm 31.5mm 263% -
LH: 48162-60040
RH: 48161-60040		 UZJ100 w/ AHC 1160mm 25.4mm 100% - OE U.S. spec w/ AHC
LH: 48162-60030
RH: 48161-60030		 UZJ100 1160mm 28.87mm - 29mm** ~167% - ~170% - OE U.S. spec
LH: 48162-60080
RH: 48161-60080		 FZJ100 - - - -
LH: 48162-60100
RH: 48161-60100		 FZJ100 w/ OE winch - - - -
Ironman4x4:
TOY050-100LC		 UZJ100 1160mm 32.45mm ~266% "thick spring steel" TOY050-LX470 (same part)
X-Sway (formerly Sway-A-Way): 1661 UZJ100 1160mm 32mm ~252% "Solid aircraft-grade steel, heat treated"
X-Sway (formerly Sway-A-Way): 1660 HDJ100 1210mm 32mm ~248% "Solid 4340 alloy steel, heat treated"
Old Man Emu (ARB):
303001		 UZJ100 1160mm 30.4mm ~205% "premium grade spring steel"
Old Man Emu (ARB)
303002		 HDJ100 1210mm 32.8mm ~274% "premium grade spring steel"
TJM:
657025		 UZJ100 1160mm 32mm ~252% "premium grade spring steel"
TJM:
657024		 HDJ100 1210mm 32mm ~248% "premium grade spring steel"
Dobinsons:
TB59-1600		 UZJ100 1160mm - "heavy duty"
Dobinsons:
TB59-1610		 HDJ100 1210mm - "heavy duty"
Cruiser Patch:
1661-CP27K		 UZJ100 w/ AHC 1160mm 27mm ~128% "Solid aircraft-grade steel"
Cruiser Patch:
1661-CP29.5K		 UZJ100 1160mm 29.5mm ~182% "Solid aircraft-grade steel"

 

For those curious how the difference in spring rate is determined, here's our calculations/equation*:

[(TB^4)/(25.4^4)]*100 = % stiffness of OEM AHC 1160mm 25.4mm bar

[(TB^4)/(25.4^4)]*100 = % stiffness of OEM AHC 1210mm 25.5mm bar

*metallurgy also determines spring rate. Given the unknowns about each manufacturer's material, these rates are merely estimates.
**some OE non-AHC 1160mm bars have been measured at differing diameters according to mud threads in the past.

100 Series Land Cruiser & LX470

1998-2007 Toyota Land Cruiser and Lexus LX470

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