RPO ZR2 was a special off-road/suspension package offered by General Motors primarily on their 4x42nd Generation S-Series line. It debuted in 1994 on the Chevrolet S-10 and the GMC Sonoma pickup trucks. In 1996 it was expanded to the two-door Chevrolet Blazer and later offered on the Chevrolet Tracker. The ZR2 package was gradually phased out with the S-Series pickup and SUV lines.
Ladder-type Frame with modified mounting points
100mm wider track (3.9 inches wider than regular S-10)
Increased ground clearance (Approx 3" over Regular S-Series 4x4)
Enhanced front (7.25" ring gear) and rear (8.5" ring gear) axles w/ 3.73:1 rear-axle ratio