TECHLINE
Four Wheeler|November 2021
DIFF DROP OR NOT I’m upgrading my lift kit from a budget Pro Comp kit to the Ironman 4x4 Foam Cell Full Kit (2–3-inch lift, new shocks, coils, full leaf pack, and carrier bearing drop kit) on my ’10 Toyota Tacoma Double Cab. The truck is my daily driver and weekend overlanding/camping rig. I don’t do any extreme offroading or rock crawling. Usually trails with softball-sized rocks at most.
VERNE SIMONS

My question is, currently I have a 1-inch diff drop that came with the budget kit. The Ironman kit does not have a diff drop (has a carrier bearing drop) but has the same amount of lift as the old kit. Do I need the diff drop? I can’t seem to get a straight answer from anyone. I spoke with Ironman, and they said it’s not required if you’re doing moderate off-roading, but they can’t define “moderate.” I’d like to remove the diff drop so I don’t have to use spacers to attach my new skidplate. Should I remove it or keep it?

SALVATORE VIA FACEBOOK

Generally speaking, running the stock CVs for long periods of time at extreme angles is asking for axle shaft damage and/or CV boot failure. Hence, the differential drop you mention that came with the Pro Comp kit. So, our hunch with this situation is a diff drop should be used with any suspension lift that exceeds 1.5-2 inches, especially if you plan to, as you seem to indicate, drive the truck on-road a fair amount.

Still, we like more than one data point, so we reached out to a friend who has more firsthand experience with late-model Toyota 4x4s with suspension modifications. That friend is one of the guys who helped us set up the suspension (that we love) in our third-gen ’20 Tacoma, Jason Huss of Toytec Lifts. Jason says as a rule he sticks to is anything over 2 inches on a second-gen Tacoma should have a diff drop.

Jason also says that the price of its suspension kit isn’t too far off from what he feels is a superior suspension available from Toytec, namely the Toytec Aluma Series Boss Suspension System (for ’05-’15 Tacoma) 2-3-Inch Lift. The Toytec kit can be upgraded with parts, including a couple of different upper control arms, full leaf-spring packs for the rear, DuroBumps bump stops, and a rear U-bolt Flip Kit. We run and love the latter two items on our Tacoma. That kit should be everything you want, including the recommended diff drop kit, and Toytec will be available to help answer any questions on its product before and after the sale.

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