Gear Vendors Under/Overdrive

Catalog Item # 20070d

The finest quality Auxiliary Transmissions offer the ultimate in horsepower and performance.

Technical Specifications

Camper's Choice Rating

Reviewer rating of 5 stars based on 10 reviews (5 Based on 10 Reviews)

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Great engine saver

by Michael Harrington – March 12, 2006
5 out of 5 stars

I bought this unit July of '05. The La Mirada, CA store handled the transaction for me. I had it installed on my '03 Superduty wi

New life in an old rig

by Brian – March 09, 2010
5 out of 5 stars

I installed this unit in a 1986 Pace Arrow that I had been driving for 10 years in 2006 and set out from NH to WA and CA. The fir

Gear vendors over-under drive. Wonderfull!!!!

by mel clark – September 20, 2006
5 out of 5 stars

I have one of these in my 1984 Ford F250 4X4. I have 5:16 limited slip gears. The engine is a 6.0 ldiesel with an add on turbo.

Gear Vendors

by Richard Feist – May 29, 2006
5 out of 5 stars

This is worth the money in every way - even if it doesn't pay for itself in fuel savings (which it might at today's prices) - The

one excellent product

by Barney Fife – January 17, 2006
5 out of 5 stars

This unit is well built, does exactly what it says,and adds that extra gear just wear you need it. I will always have one on any t

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