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Stock Undercarriage

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Rancho's 2- to 2 1/2-inch lift allows for mounting tires slightly larger than stock (30x9.50/15 versus the original P215 or 225/75R15), but it barely increases wheel travel as long as the anti-sway bar and track bar remain attached. The bars improve pavement handling at the expense of off-road flex. In ramp tests done by Joel Snider and Joe Shaff at Stage West 4 Wheel Drive Center, a bone-stock YJ scored a ramp-travel index (RTI) of 455. Merely disconnecting the front sway bar bumped the RTI to 621, and the YJ climbed to 749 when both track bar and sway bar were unbolted.

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