2018 Jeep Wrangler Rubicon – Modern Design. 2018 Jeep Wrangler Rubicon – Drive and Exterior.
The all-new 2018 Jeep Wrangler delivers legendary off-road capability courtesy of two advanced 4×4 systems, and for the first time in Wrangler’s history, a two-speed transfer case with full-time four-wheel drive and a 2.72:1 low-range gear ratio that is available on Sahara models. This new Selec-Trac full-time two-speed transfer case is intuitive and allows the driver to set it and forget it, while constantly sending power to the front and rear wheels.
The Command-Trac 4×4 system features a two-speed transfer case with a 2.72:1 low-range gear ratio, and next-generation solid Dana front and rear axles with a 3.45 rear axle ratio.
On Wrangler Rubicon, a Rock-Trac 4×4 system features heavy duty next-generation Dana 44 front and rear axles with a “4LO” ratio of 4:1. A 4.10 front and rear axle ratio is standard as are Tru-Lok locking differentials.
Wrangler Rubicon models offer improved articulation and total suspension travel versus the previous generation with help from an electronic sway-bar disconnect. With the standard six-speed manual transmission, Wrangler Rubicon has an impressive and improved crawl ratio of 84.2:1, and 77.2:1 on Rubicon models equipped with the new eight-speed automatic transmission – both of which makes scaling any obstacle on the trail easy.
Both Command-Trac and Rock-Trac systems offer full-time torque management, enabling optimal grip in low-traction conditions.
An available Trac-Lok limited-slip rear differential provides extra torque and grip during slippery, low-traction situations, such as driving over sand, gravel, snow or ice.