What does 'NR' mean in the wheel description?

The 'NR' designation typically refers to the 'No Rivets' option for SSR wheels. This means the wheel has a clean, smooth outer barrel without decorative rivets, offering a sleeker appearance.

What is the benefit of a forged wheel compared to a cast wheel?

Forged wheels are made by compressing aluminum under extreme pressure, creating a denser, stronger, and lighter material than cast wheels. This results in improved durability, better handling due to reduced unsprung weight, and often a more refined aesthetic.

What does the -21 offset mean for my vehicle?

A negative offset, like -21mm, pushes the wheel further out from the hub assembly. This can create a more aggressive stance, fill the wheel wells better, and potentially improve handling, but it's crucial to ensure it clears your fenders and suspension components.

SSR Professor SP4 18x10.5 -21 5x114.3 White Wheel P418105-21

Name: SSR Professor SP4 18x10.5 / -21 NR / 5x114.3 BP White Wheel (SPECIAL ORDER-NO CANCELLATION)
Brand: SSR
SKU: ssr-ssr-professor-sp4-18x10-5-21-nr-5x114-3-bp-white-wheel-special-order-no-canc-t14-872456
Price: 1049.60 USD
Availability: InStock

SSR Professor SP4 18x10.5 / -21 NR / 5x114.3 BP White Wheel (SPECIAL ORDER-NO CANCELLATION)

$1049.60

Only 2 left in stock

SSR Professor SP4 18x10.5 / -21 NR / 5x114.3 BP White Wheel (SPECIAL ORDER-NO CANCELLATION)

Key Features

This is a special order item and cannot be canceled once placed.
Forged construction for strength and light weight.
18-inch diameter with a 10.5-inch width.
-21 offset for an aggressive stance.
5x114.3 bolt pattern.
Striking white finish.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

If you're looking to give your vehicle a truly unique stance and performance edge, consider the SSR Professor SP4 forged wheel. This isn't just about looks; it's about a well-built wheel designed for enthusiasts who demand both style and substance. The SP4 is a popular choice for those building a custom setup where wheel fitment and appearance are paramount.

Crafted using SSR's advanced forging process, these wheels are exceptionally strong yet surprisingly lightweight. This particular model measures 18 inches in diameter with a 10.5-inch width and a -21 offset, featuring a 5x114.3 bolt pattern. The white finish offers a clean, striking look that stands out. Forging allows for precise control over material density and grain structure, resulting in a wheel that can handle the stresses of spirited driving and track use while minimizing unsprung weight, which can improve handling and acceleration.

It's important to note that this is a special order item and cannot be canceled once placed. Please verify fitment carefully for your specific application, as modifications may be required depending on your vehicle's suspension and brake components. The wheel comes with a standard bolt pattern and hub bore, but always double-check clearance with your brake calipers and fender lines before ordering.