Revolution Gear & Axle Ring & Pinion Set for Toyota 8" IFS (2005-23 Tacoma, 2010-14 4Runner, 2007-14 FJ Cruiser, 2003-09 Lexus GX470, 2010-14 GX460) (4.56 Ratio, Thick, 29-Spline)

This Revolution Gear & Axle ring and pinion set fits the Toyota 8.0" IFS front (clamshell) differential on 2005-23 Tacoma, 2010-14 4Runner, 2007-14 FJ Cruiser, 2003-09 Lexus GX470, 2010-14 Lexus GX460, and the 2003-09 Land Cruiser Prado 120 overseas model, cut in a 4.56 ratio as a thick, reverse-cut gear.

The thick ring gear is the key spec: it allows a 4.56 to bolt onto a 3.73-and-numerically-lower carrier without changing carriers, which saves cost on the front IFS re-gear. The pinion is 29-spline, the gears are reverse cut for the IFS front, and they're made from heat-treated 8620 steel. The carrier break is 3.73/3.91.

This set is aimed at Toyota mid-size trucks and SUVs being built for larger tires, where you re-gear to recover acceleration and crawl ratio lost to taller rubber. To keep the front and rear axles in sync, run a matching 4.56 ratio in the Toyota 8" rear axle.

This is a gear set only. It does not include bearings, shims, a crush sleeve, a pinion seal, or a locker – those are sold separately. Confirm you have the Toyota 8" IFS front with a 3.73-and-lower carrier before ordering, and have the gears set up by an experienced installer for proper depth, backlash, and preload.

Pair this set with a Revolution Toyota 8" IFS master install kit for a quiet, durable rebuild backed by a 2-year warranty against manufacturing defects.