Will the RRT-ETX wheels fit my car's large brake calipers?

Yes, the RRT-ETX wheels are specifically engineered to provide maximum clearance for large multi-piston brake calipers and aggressive brake setups, making them perfect for cars with oversized brakes. Plus, custom manufacturing options ensure they match your vehicle’s specific bolt pattern (PCD) and offset for a perfect fit.

How does the RRT-ETX wheel help with track performance?

The wheel's unique spoke design and barrel shape optimize airflow and boost structural rigidity under heavy braking, helping keep your brakes cool and maintaining performance during endurance track sessions. Its lightweight forged construction reduces unsprung weight, improving handling and responsiveness on the track.

Can I get the RRT-ETX wheels in my preferred size and finish?

Absolutely. The RRT-ETX wheels come in diameters from 18 to 21 inches and widths from 8 to 12 inches in various increments. Each wheel is custom manufactured to your exact specifications, including diameter, width, offset, and vehicle-specific bolt pattern. You can also choose from bespoke finishes to match your style and vehicle aesthetics.

Are these wheels durable enough for high-heat track conditions?

Yes, the RRT-ETX wheels are forged and crafted using full 5-axis machining, which enhances their strength while reducing weight. They are built to withstand the high-heat and stress conditions typical in endurance track racing, ensuring long-lasting performance without compromising safety or integrity.

I’m worried about future brake upgrades. Will these wheels still fit if I upgrade my brakes later?

The RRT-ETX wheels are designed with adaptability in mind. Their maximum brake clearance and custom sizing options mean they can accommodate current big brake setups and future, even larger, brake upgrades. This lets you evolve your vehicle build without needing to change your wheels.

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RRT – ETX Forged Wheel Engineered for Brake Clearance Without Compromise

Name: 19 / 8.5 RRT-ETX
Price: 1100.0 USD
Availability: InStock

The RRT ETX Forged Wheel is built around one principle: flexibility.

Its architecture is engineered to provide maximum brake caliper clearance, making it ideal for endurance track cars running thick calipers and aggressive pad setups. Where most wheels force compromises between design and braking hardware, the ETX is developed specifically to eliminate that limitation.

This is a performance-first platform.

Designed Around Brake Efficiency

Large multi-piston calipers require intelligent spoke geometry and barrel shaping. The ETX incorporates a spoke profile that maximizes inner clearance while maintaining structural integrity under load.

For endurance builds and high-heat track environments, this matters.

The ETX allows:

Greater brake caliper clearance
Support for oversized brake upgrades
Proper airflow around braking components
Structural rigidity under sustained load

It is engineered for cars that evolve.

Full-Spectrum 5-Axis Optimisation

The ETX does not reduce machining complexity to lower production cost. It incorporates advanced structural optimisation techniques throughout:

Full spoke-length 5-axis undercuts
Sculpted 5-axis cut profiles
Webbed spoke-to-barrel geometry
Deep rear pocketing for mass reduction

Each feature removes unnecessary material while preserving load-bearing strength. The result is a lightweight forged wheel that maintains rigidity even under high braking forces.

Available Colors

Weight Description of RRT- ETX

Built for Street. Proven for Track.

The RRT ETX Forged Wheel is ideal for:

Endurance track builds
Big brake conversion setups
Street cars planning future brake upgrades
Drivers who require adaptability in their build direction

If your build demands brake upgrade potential without sacrificing wheel performance, the ETX provides that margin.

Custom Manufactured to Specification

Every ETX wheel is forged from high-grade aluminum and built to order:

Diameter from 15 to 24 inches
Custom width configuration
Vehicle-specific PCD
Precise offset (ET)
Optimised brake clearance
Bespoke finish options

Each set is engineered for exact fitment — not adapted after production

Engineered for Uncertainty

Some builds are fixed.
Others evolve.

The ETX is designed for the latter — providing the structural headroom and clearance flexibility required for future performance upgrades.

CUSTOM GALLERY

PRODUCT GALLERY

Explore detailed images of this product from every angle.

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engineering

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.

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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.

balance

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.

ENGINEERING

THE SCIENCE OF OFFSET

Understanding scrub radius, clearance, and how offset affects handling characteristics.

DESIGN

I-BEAM SPOKE TECH

Finite element analysis behind our signature I-beam spoke reinforcement design.

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RRT-ETX