Extreme Series

Extreme Performance Forged Wheels Built Without Compromise

The RRT Extreme Series represents the upper limit of what forged wheels can achieve when engineering is allowed to lead every decision. These are not styling-driven products. They are purpose-built custom rims designed for drivers who demand maximum performance, precision, and structural efficiency.

Among modern automotive rims, very few wheels match the Extreme Series in strength-to-weight ratio. In independent comparisons, these wheels outperform competitors costing up to twice as much, placing them firmly at the top tier of aftermarket car wheels.

Forged Wheels Engineering First. Always.

Every Extreme Series car wheel rim is designed with a strict form-follows-function philosophy. Load paths, spoke geometry, and cross-sectional inertia are modeled to minimize mass while maximizing stiffness. Nothing is cosmetic. Every curve, cut, and profile exists to serve a mechanical purpose.

Wheel behavior under stress is controlled through optimized wheel offsets, precise spoke alignment, and structural geometry that manages lateral, vertical, and torque loads efficiently. This obsessive focus on engineering is what separates the Extreme Series from conventional after market wheels.

The Extreme Series Lineup

Each wheel in the Extreme Series is engineered around a specific performance objective. Different philosophies. Same uncompromising standards.

RRT Starlite

A lightweight forged wheel focused on efficiency and balance. Starlite prioritizes optimized load paths and reduced rotational mass, making it ideal for performance street builds where responsiveness and weight savings matter most.

RRT Ultra

Designed for maximum strength-to-weight performance. Ultra features aggressive machining and reinforced structural zones to handle high power, high grip, and demanding road conditions without compromise.

RRT X9P

A stiffness-driven forged wheel inspired by motorsport design principles. The X9P emphasizes rigidity, precise spoke alignment, and controlled deflection under load, delivering consistent feedback at the limit.

RRT Xtremist Mono

A mono-block forged wheel built purely around engineering efficiency. Thin-wall profiles, advanced pocketing, hollow sections, and optimized cross-sectional geometry push weight reduction to the extreme while retaining structural integrity.

Advanced Manufacturing Without Shortcuts

Each wheel requires up to 26 hours of machining on a 5-axis CNC platform, allowing for design features rarely seen in production auto rims. These include deep side cuts, thin-wall load-optimized structures, hollow box sections, and web-span designs engineered to remove unnecessary mass without sacrificing strength.

This manufacturing approach pushes beyond typical aftermarket forged wheels, enabling geometries that are not achievable through standard casting or simplified forging processes.

Measurable Weight Reduction. Real Performance Gains.

Compared to OEM wheels, the Extreme Series delivers up to 5 kg of weight savings per wheel. Against high-quality cast aftermarket wheels, the reduction is typically 2–3 kg, and even compared to premium forged competitors, savings of 1–2 kg per wheel are achieved.

Reducing rotational mass at this level directly improves acceleration, braking response, and steering feedback. This is performance you can feel, not marketing language.

Strength Where It Matters Most

Despite aggressive weight reduction, the Extreme Series proves that lightweight forged wheels do not need to be fragile. Structural testing and design validation deliver:

• Up to 2× lateral load capacity

• Up to 3× torque load resistance

• Approximately 20% higher vertical load capacity compared to market competitors

This makes the Extreme Series suitable not only for aggressive street builds but also for high-load performance applications, including demanding platforms where AMG-level wheel requirements are expected.

Precision Fitment Without Limits

Beyond raw performance, the Extreme Series offers extensive customization. We support a wide range of widths and wheel offset configurations to achieve accurate fitment without spacers or compromises.

This flexibility allows each wheel to integrate cleanly with modern suspension geometry, large brake systems, and performance-focused chassis setups.

Built for Those Who Refuse Compromise

The RRT Extreme Series exists to prove a simple truth:

Light wheels do not have to be weak.
Strong wheels do not have to be heavy.

These are not mass-market automotive rims. They are precision-engineered aftermarket car wheels built for drivers who treat performance as a discipline, not a trend.

If you are looking for forged wheels engineered without shortcuts, the Extreme Series represents the unfair advantage serious builds demand.