Rock crawling

Rock crawling is an extreme form of off-road driving using specialized vehicles ranging from stock to highly modified, to overcome obstacles.

In rock crawling, drivers typically drive highly modified four-wheel-drive vehicles such as trucks, Jeeps, and "buggies" over very harsh terrain.

Rock crawling is about slow-speed, careful and precise driving, and high torque generated through large gear reductions (100:1 or more) in the vehicle's drivetrain.

Suspension-wise, rock crawling vehicles sometimes have after-market lift kits installed, raising the chassis and increasing suspension flex, though the rock crawlers running the tougher trails often have fabricated suspension systems, or home-assembled leaf packs to cheaply achieve the goals, making it easier to drive over larger obstacles with less risk of damage to the vehicle.

Most suspensions are made to be highly flexible, allowing for the maximum amount of tire area to contact the ground, while keeping the vehicle as low as possible.