KYB 340011 Suspension Strut - Front Left

KYB Excel-G Front Left Strut for Infiniti

The KYB Excel-G suspension strut is built to restore original ride control, stability, and steering response on select Infiniti applications. This KYB Excel-G, part number 340011, uses OE-style construction and calibration to return the vehicle to its designed handling balance without changing the factory feel.

It is a nitrogen gas-charged, twin-tube strut assembled on KYB OE production lines with OE-quality components. For Infiniti G35, G37, G25, and Q40 front left suspension service, 340011 is a direct replacement focused on restoring control, braking consistency, and lane-change response.

Key Features

• OE-style replacement for Asian performance vehicles
• Restores designed control and handling on Infiniti applications
• Triple-lip fluid seal helps reduce 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 maintaining suspension behavior as engineered
• Heavy-duty strut body and bracket design helps minimize flex and maintain alignment
• Internal anti-rollover spring included
• Part number 340011

Product Details

KYB Excel-G is KYB’s OEA-style replacement line for drivers who want factory-correct suspension performance. This strut is calibrated to restore original ride characteristics rather than alter them, making it a practical choice for Infiniti G35 front left strut replacement, Infiniti G37 front left suspension repair, Infiniti G25 front left strut service, and Infiniti Q40 front left strut replacement. This part cross-references Monroe Shocks & Struts 72572 for the same application.

Common Problems This Strut Can Address

• Excessive bounce or poor damping over bumps
• Loose or delayed steering response
• Nose dive during braking
• Body roll during lane changes and cornering
• Uneven tire contact caused by worn suspension control

Installation Notes and Tips

• Fits 2015 INFINITI Q40, Front Left
• Fits 2009-2013 INFINITI G37, Front Left, w/o 4 Wheel Steering
• Fits 2011-2012 INFINITI G25, Front Left
• Fits 2007-2008 INFINITI G35, Front Left, w/o 4 Wheel Steering
• Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions.
• Verify upper mount type S1 (12MM) and suspension geometry before installation.
• Confirm compressed length 11.41 in., extended length 13.24 in., and stroke length 1.83 in. during service planning.

Quality Assurance

KYB is a major OE supplier, and Excel-G is manufactured on the same KYB assembly lines used for original equipment production. The design uses OE-quality components and application-specific damping calibration to help maintain factory-correct suspension performance on Infiniti G35, G37, G25, and Q40 models. Part number 340011 is built for consistent replacement quality in front left suspension service.