KYB 343423 Shock Absorber - Rear

KYB Excel-G Rear Shock Absorber for GM Compact Cars

The KYB Excel-G 343423 is a rear suspension shock absorber built to restore original ride control, stability, and handling. It is a direct OE-style replacement for select Chevrolet Aveo, Chevrolet Aveo5, Pontiac G3, and Pontiac Wave applications, with calibration focused on factory-like response rather than changing the vehicle’s character.

Key Features

• KYB recommended OEM replacement shock for rear suspension service
• Nitrogen gas-charged, twin-tube design for consistent damping performance
• Triple-lip fluid seal helps reduce the chance of oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
• Supports proper operation of electronic safety systems by helping suspension, brakes, and tires work as engineered
• Strong strut body and bracket construction helps minimize flex and maintain alignment
• Rear application with compressed length 14.88 in., extended length 23.5 in., and stroke length 8.62 in.
• Lower mount type E2(10X50) and upper mount type S1

Product Details

KYB Excel-G is part of KYB’s OE-focused product line, made on the same assembly lines used for original equipment supply and built with OE-quality components. The 343423 shock absorber is calibrated to restore the designed ride and handling balance on the rear of the vehicle, making it a practical choice for drivers addressing worn suspension performance on a Chevrolet Aveo rear shock replacement, Chevrolet Aveo5 rear shock replacement, Pontiac G3 rear shock replacement, or Pontiac Wave rear shock replacement. This part cross-references Monroe Shocks & Struts (e.g., 5794) for the same application.

What It Helps Fix

• Excessive bouncing after bumps
• Loose or unstable rear-end handling
• Longer stopping distances caused by worn suspension control
• Poor lane-change response and reduced body control
• Uneven tire contact from weakened damping performance

Installation Notes

Compatible With 2004-2011 Chevrolet Aveo, rear; 2007-2011 Chevrolet Aveo5, rear; 2009-2010 Pontiac G3, rear; and 2005-2008 Pontiac Wave, rear. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. KYB recommends installing new strut mounts, part number SM5452, to reduce the chance of noise and vibration. Verify mount orientation and suspension condition before installation.

Quality Assurance

KYB is a major OE shock and strut supplier, and Excel-G is classified as Original Equipment for the Aftermarket based on its OE-style construction and calibration. Part number 343423 is engineered to restore factory-designed performance on supported GM rear suspension applications.