Product#: GV4000

Gear Vendors Under/Overdrive; TH400 w/ 4" Tailhousing

Give your transmission up to twice the forward gear ratios with the UNDER/OVER DRIVE auxiliary transmission from Gear Vendors. This supplemental planetary gearbox adapts to the output shaft of your existing transmission to...


Product#: 3DFS351A

Gear Vendors Under/Overdrive; TH350 w/ 6" Tailhousing

Give your transmission up to twice the forward gear ratios with the UNDER/OVERDRIVE auxiliary transmission from Gear Vendors. This supplemental planetary gearbox adapts to the output shaft of your existing transmission to...


Product#: MN2407

Gear Vendors Under/Overdrive; A-727 w/ 18" Tailhousing

Give your Mopar up to twice the forward gear ratios with the UNDER/OVERDRIVE auxiliary transmission from Gear Vendors. This supplemental planetary gearbox adapts to the output shaft of your existing transmission to provide an...


Product#: MN2406

Gear Vendors Under/Overdrive; A-727 w/ 8" Tailhousing

Give your Mopar up to twice the forward gear ratios with the UNDER/OVERDRIVE auxiliary transmission from Gear Vendors. This supplemental planetary gearbox adapts to the output shaft of your existing transmission to provide an...


Product#: MN2405

Gear Vendors Under/Overdrive; A-904 w/ 15" Tailhousing

Give your Mopar up to twice the forward gear ratios with the UNDER/OVERDRIVE auxiliary transmission from Gear Vendors. This supplemental planetary gearbox adapts to the output shaft of your existing transmission to provide an...


Product#: MN2404

Gear Vendors Under/Overdrive; A-833 w/ 18" Tailhousing

Give your Mopar up to twice the forward gear ratios with the UNDER/OVERDRIVE auxiliary transmission from Gear Vendors. This supplemental planetary gearbox adapts to the output shaft of your existing transmission to provide an...