G37 Suspension Parts: The Complete Guide to Upgrading Your Infiniti's Handling

Upgrading the suspension on your Infiniti G37 is one of the most effective ways to improve handling, ride comfort, and overall driving enjoyment. Whether you drive a coupe, sedan, or convertible, the G37’s platform responds well to quality suspension components. This guide covers the key parts you’ll encounter when building a suspension setup, what each component does, and how to choose the right parts for your goals.

Understanding G37 Suspension Parts

The G37 uses a front double-wishbone and rear multilink suspension design, which offers a good balance of comfort and performance from the factory. However, many owners find that upgrading certain components reduces body roll, sharpens steering response, and lowers the center of gravity for better cornering.

OEM vs. Aftermarket

Original Equipment Manufacturer (OEM) parts are identical to what came on the car. They are reliable and maintain factory ride quality, but they don’t improve performance. Aftermarket parts are designed to enhance handling, adjustability, or durability. The choice depends on whether you want to keep the car stock or unlock more capability.

Key Suspension Components for the G37

Coilovers vs. Lowering Springs

Coilovers are a complete strut and spring assembly with adjustable ride height and often damping. They allow you to fine-tune the suspension for street, autocross, or track use. Lowering springs replace only the springs, lowering the car about 1 to 1.5 inches while using the factory shocks. Coilovers offer more adjustability and better performance at a higher price point, while lowering springs are a more affordable way to improve looks and reduce body roll.

Sway Bars, Control Arms, and Bushings

Sway bars (anti-roll bars) connect the left and right sides of the suspension to reduce body roll in corners. A thicker bar increases roll stiffness. Control arms (or camber arms) allow you to adjust alignment angles after lowering the car. Adjustable upper control arms are common for the rear to correct camber. Bushings – replacing rubber bushings with polyurethane or spherical bearings reduces suspension deflection and improves feedback, but can increase noise and vibration.

Factors to Consider When Choosing Parts

Driving Style and Goals

• Daily driver: Focus on comfort and reliability. A mild lowering spring with quality shocks or a basic coilover set with soft damping works well.
• Spirited street driving: A mid-range coilover with adjustable damping and camber plates gives a good balance. Add a thicker rear sway bar.
• Track or autocross: Prioritize adjustability and stiffness. Race-oriented coilovers, adjustable control arms, and solid bushings are common.

Budget and Quality

Suspension parts range widely in price. A budget coilover set may cost $800, while high-end brands like Ohlins or KW can exceed $2,500. Generally, you get what you pay for in terms of materials, valving quality, and durability. Set a realistic budget and consider that cheap parts may lead to premature wear or poor ride quality. Also factor in the cost of installation and alignment.

Installation Considerations

Many suspension parts can be installed at home with basic tools and a jack stand, but a proper alignment is essential after any ride height or geometry change. Coilover installation is straightforward for intermediate DIYers. Control arms and bushings may require a press or professional tools. Always torque bolts to spec and re-check after a few hundred miles.

Final Recommendation

For most G37 owners looking to improve handling without sacrificing too much daily comfort, a quality set of coilovers with adjustable damping is the best all-around upgrade. Pair them with adjustable rear camber arms to maintain proper alignment after lowering. If you're on a tighter budget, lowering springs with performance shocks will still provide a noticeable improvement. For serious track use, add stiffer sway bars and polyurethane bushings. No matter what parts you choose, invest in a professional alignment to get the most out of your new suspension.