The belts run over matching toothed pulleys or sprockets. Steering involved upright steering levers to four hydraulic brakes on the sprockets and idlers. It is designed to run over matching toothed pulleys or sprockets. Both engine and axle sprockets are removable. The 5.7 liter V8 also had new heavy-duty intake valves and powdered metal camshaft sprockets. In derailleur mechanisms the highest efficiency is achieved by the larger sprockets. Chains do deteriorate, and excessive wear on the front and rear sprockets can be dangerous. Smaller sprockets at the top guided the chains. Drive is through the drive sprockets located at the rear. The number of sprockets of the cassette in each groupset is shown in brackets. "External gearing" is so called because all the sprockets involved are readily visible. In comparison, the M4 used 13 tooth drive sprockets. The Grizzly's suspension used 17-tooth drive sprockets and CDP tracks. The tracks were driven through the front sprockets. Clocking and guide tracks were placed on each side of the film near the sprockets.