I-SHIFT WITH CRAWLER GEARS
STARTABILITY & MANEUVERABILITY
When startability and maneuverability are critical, the I-Shift with crawler gears offers the highest weight capacity in an automated manual transmission. It enables controlled forward and reverse travel at extremely slow speeds.
The I-Shift with Crawler Gears option adds either one or two gears to the base 12-speed I-Shift for Severe Duty, a low gear and ultra-low gear. The 13-speed version has one low crawler gear with a 17.54 to 1 ratio. The 14-speed version has one low crawler gear with a 19.38 to 1 ratio, and one ultra low crawler gear with a 32.04 to 1 ratio. The overall ratio of the I-Shift with Crawler Gears, 41.08 to 1, is more than double that of the I-Shift.
Upgraded software optimizes shifting for high GCW applications, allowing shifting to occur at higher revs, and enabling drivers to control downshifts.