ENGINEERING
THE SCIENCE OF OFFSET
Understanding scrub radius, clearance, and how offset affects handling characteristics.
NEW RELEASE
RRT-X9P
$980.00
Alloy Wheels Built for Strength: RRT X9P Forged Wheel
The RRT X9P forged wheel is a long-time favorite among clients looking for alloy wheels that prioritize strength, reliability, and proven engineering over visual excess. Defined by clean lines and a thick core section, the X9P delivers a confident, strength-driven appearance backed by serious structural design. These are alloy wheels developed for drivers who value durability, structural integrity, and repeatable performance under real-world loads.
Thick Core Spoke Engineering
At the heart of the X9P is its thick core spoke architecture. This design maximizes the polar moment of cross-sectional inertia across the wheel width, improving stiffness and resistance to deformation. The structure supports aggressive brake fitments and enables deeper concave profiles without compromising strength. For drivers running larger brake kits on performance cars, these forged rims provide the rigidity expected from high-end aluminum wheels.
Load Path Optimization & Structural Design
Despite its brake clearance capability, the X9P remains highly performance-focused. The wheel features deep pocket box center-core sections, profiled wall areas, and deep side-cut C-channel secondary spokes. Together, these elements optimize load paths and manage stress efficiently across the wheel face and barrel. This approach allows the X9P to perform consistently across different fitments, from 17 inch rims to 19 inch rims and 20 inch rims, without sacrificing structural stability.
Available Colors and Finishes
*Actual colors may vary due to current lightings.*
Strength-to-Weight Performance
The X9P is both stronger and lighter than all mould-forged Japanese wheels available in the market at equivalent rated load capability. In real-world comparisons, it consistently outperforms wheels that cost significantly more. This makes the X9P one of the most efficient forged car rims in its segment, offering an excellent balance of mass reduction and load-bearing capability.
Weight Description of RRT- X9P
| kg | kg | kg | kg | kg | ||||||||||||||
| 17x7 | 6.5 | 18x8 | 6.85 | 19x8 | 7.25 | 20x9 | 7.75 | 21x10 | 9.6 | |||||||||
| 17x8 | 6.25 | 18x8.5 | 7 | 19x8.5 | 7.45 | 20x9.5 | 8.05 | 21x10.5 | 9.8 | |||||||||
| 17x9 | 6.45 | 18x9 | 7.2 | 19x9 | 7.6 | 20x10 | 8.35 | 21x11 | 10.5 | |||||||||
| 18x9.5 | 7.3 | 19x9.5 | 7.75 | 20x10.5 | 8.6 | 21x11.5 | 10.25 | |||||||||||
| 18x10 | 7.5 | 19x10 | 7.95 | 20x11 | 8.8 | |||||||||||||
| 18x10.5 | 7.65 | 19x10.5 | 8.1 | 20x11.5 | 9 | |||||||||||||
| 18x11 | 7.85 | 19x11 | 8.35 | 20x12 | 9.4 | |||||||||||||
| 18x11.5 | 8.5 | 19x11.5 | 8.65 | |||||||||||||||
| 19x12 | 8.95 |
Traditional Design, Extreme Value
More traditional in appearance, the RRT X9P stands out as a cost-effective option within the Extreme Series lineup. For drivers seeking forged alloy wheels with a strong, chunky profile and no compromise in performance, the X9P offers a rare balance of strength, weight efficiency, and value. Whether configured as lightweight rims for track use or durable wheels for high-powered street builds, the X9P remains a dependable choice.
ENGINEERING PROTOCOL
BUILT BEYOND SPEC
Every wheel in this series is forged and machined to tolerances that exceed conventional standards.
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FORGED 6061-T6
Aerospace-grade billet aluminum, heat-treated to T6 specification.
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CNC MACHINED
Five-axis CNC machining ensures micron-level precision on every surface.
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HEAT TREATED
T6 heat treat process maximizes strength-to-weight ratio.
VELOCITY & RIGIDITY
FORGED VS. CAST
Our forging process aligns grain structure for superior strength at a lower weight.
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LIGHTWEIGHT
Up to 30% lighter than cast equivalents, reducing rotational mass.
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STRENGTH
Forged grain structure yields higher tensile and fatigue strength.
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BALANCE
Dynamic balancing to within 5 grams for smooth high-speed rotation.
| Specification | RRT Forged | OEM Cast |
|---|---|---|
| Weight (19x8.5) | 50% Lighter / 15% Lighter JFW | 12.1 kg |
| Tensile Strength | ≥310 MPa | ≤220 MPa |
| Fatigue Life | 1,000,000+ cycles | ~500,000 cycles |
| Porosity | None | Visible micro-voids |
PRECISION FITMENT
DESIGNED FOR YOUR CHASSIS
Each fitment is engineered to clear big brake kits and maintain optimal suspension geometry.
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HUB CENTRIC
Precision-bored center bore matches your vehicle hub for vibration-free fitment.
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BIG BRAKE CLEARANCE
Designed to clear multi-piston calipers without spacers.
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OPTIMAL OFFSET
Custom offset engineering for perfect flush fitment with the fender.
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LOAD RATED
Each fitment is load-rated to exceed vehicle manufacturer specifications.
TECHNICAL INSIGHTS
FROM THE LAB
Deep-dive articles on the engineering behind the RRT Forged Weels.
MATERIALS
6061-T6 VS. 7075-T6
Why we choose 6061-T6 aluminum for monoblock construction and where 7075-T6 excels.
DESIGN
I-BEAM SPOKE TECH
Finite element analysis behind our signature I-beam spoke reinforcement design.