Kinetix Adjustable Front Upper Control Arms (A-Arms) – 2003–2008 Nissan 350Z / 2003–2007 Infiniti G35 | Camber Adjustable | KX-Z33-AA

The Kinetix KX-Z33-AA front upper control arms are a complete replacement for the factory front upper A-arms on the 2003–2008 Nissan 350Z and 2003–2007 Infiniti G35 — adding full positive and negative front camber adjustability to a platform that offers zero camber adjustment from the factory. Whether you want to extend tyre life by correcting camber on a lowered car, or dial in negative camber for maximum front grip on a track or autocross build, the KX-Z33-AA gives you the adjustment range to achieve your exact target spec. Backed by Kinetix Racing’s Lifetime Warranty.

The Problem: Zero Factory Front Camber Adjustability

The Z33/V35 platform’s front suspension offers no camber adjustment from the factory — the upper control arm length is fixed, and there is no provision for adjusting front camber at the OEM level. This becomes a significant problem in two common scenarios:

• Lowered cars: Lowering the 350Z or G35 pulls the top of the front wheels inward, creating excessive negative camber that cannot be corrected with the factory arms. The result is accelerated inner tyre wear and a car that cannot be brought back into alignment spec
• Performance builds: Track day and autocross drivers who want to add controlled negative camber for increased front grip are forced to lower the car dramatically to achieve their camber target — a compromise that affects ride quality, suspension travel, and tyre clearance

The KX-Z33-AA solves both problems with a fully adjustable upper control arm that allows 1.5° of positive camber and 0.5° of negative camber from the factory baseline setting — the most positive adjustability of any arm on the market.

Real-World Example

If your car is lowered 1.5" and the front camber is sitting at 2° negative, the KX-Z33-AA arms allow you to bring the front wheels back out to 0.5° negative camber — correcting the alignment, eliminating inner tyre wear, and restoring predictable front-end handling without having to raise the car.

Key Features

• Most Positive Adjustability on the Market: The KX-Z33-AA offers the widest positive camber adjustment range of any front upper control arm available for the Z33/V35 platform — critical for lowered street cars where correcting excessive negative camber is the primary goal. More positive adjustability means longer tyre life and a wider range of ride heights that can be properly aligned
• Full TIG Welded Construction: The arms are completely TIG welded — delivering a significant upgrade in structural strength and weld quality over the factory stamped steel arms. TIG welding produces cleaner, stronger, more precise welds than MIG or spot welding, with better penetration and less heat distortion
• Energy Suspension Polyurethane Bushings: The KX-Z33-AA uses Energy Suspension polyurethane bushings at the chassis mounting points — significantly firmer and more dimensionally stable than the factory rubber bushings. Polyurethane bushings reduce compliance and deflection under cornering loads, improving steering response and front-end precision. Energy Suspension is one of the most respected polyurethane bushing manufacturers in the performance aftermarket
• High-Quality 3-Piece Heim Ball Joint: The outboard end uses a premium 3-piece Heim ball joint rather than a conventional rubber ball joint — delivering superior suspension responsiveness and smooth, precise operation. The Heim joint is Teflon-coated internally for chatter-free operation over years of use, and is protected by a black rubber dust boot to keep contaminants out. Critically, the Heim joint is highly serviceable and does not require any special tools to remove — a significant advantage over pressed-in OEM ball joints
• Grease Fittings Included: Grease fittings are integrated into the design for easy ongoing serviceability — allowing the Heim joint and bushings to be lubricated without disassembly, extending service life and maintaining smooth operation
• Lifetime Warranty: Kinetix Racing backs the KX-Z33-AA with a lifetime warranty — a reflection of the confidence they have in the arm’s construction quality and long-term durability

Fitment

• Nissan 350Z Z33 — VQ35DE / VQ35HR (2003–2008) — All Trims
• Infiniti G35 Coupe V35 — VQ35DE (2003–2006) — All Trims and Models
• Infiniti G35 Sedan V35 — VQ35DE (2003–2006) — All Trims and Models
• Infiniti G35 Coupe V35 — VQ35HR (2007) — All Trims and Models

Note: 2007 G35 Sedan uses the V36 platform (G37 architecture) and is not compatible — this arm fits the 2007 G35 Coupe only.

Specifications

• Brand: Kinetix Racing
• Part Number: KX-Z33-AA
• Component: Front Upper Control Arms (A-Arms)
• Adjustment Range: +1.5° positive camber / −0.5° negative camber from factory baseline
• Construction: Full TIG Welded
• Bushings: Energy Suspension Polyurethane
• Ball Joint: 3-Piece Heim Joint, Teflon-Coated, with Dust Boot & Grease Fittings
• Quantity: Set of 2 (Left & Right)
• Warranty: Lifetime
• Installation: Direct OEM Bolt-In Replacement

Note: A full four-wheel alignment is required after installation. Adjust both arms equally to maintain symmetrical front geometry. Torque all fasteners to the manufacturer’s specification with the suspension at ride height. Lubricate the Heim joints and grease fittings during installation and periodically during service intervals. Professional alignment by a shop familiar with performance suspension setups is strongly recommended to achieve your target camber spec.