SPP CROWN JEWEL SUPERSIZED™ UHM HIGH MODULUS CARBON FIBER DISC SPECIFIC RIMS – PRO (406 / 507)

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Size 20"

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The SPP Supersized™ UHM Carbon Pro Rims are the crown jewel of the SPP wheel program—engineered to deliver maximum stiffness, strength, and race-winning performance through advanced high modulus carbon construction.

At the core of the design is SPP’s Supersized™ spoke interface. Each spoke nipple seats into a raised “crown” structure, increasing material volume at the highest load points while reducing mass in the valleys between. This alternating thick/thin profile optimizes strength-to-weight ratio and creates a highly responsive rim under acceleration, cornering, and landing loads.

Manufactured using high modulus carbon fiber and a precision vacuum molding process, the rim delivers exceptional stiffness without excess material. The result is immediate power transfer, reduced energy loss, and a more connected ride feel.

Finished in SPP’s UHM carbon aesthetic with a half-and-half visual treatment, these rims are built not only to perform—but to stand out against the competition.

Supersized™ Crown Spoke Interface
Raised spoke bed structure increases strength at load points while reducing unnecessary material.

High Modulus Carbon Construction
Stiffer carbon layup delivers maximum power transfer and front-to-rear responsiveness.

Alternating Wall Profile Design
Strategic thick/thin sections optimize weight without compromising structural integrity.

Vacuum Molded Carbon Process
Precision manufacturing ensures consistent strength and void-free construction.

Tubeless-Ready System
Compatible with modern tubeless setups for reduced rolling resistance and improved traction.

Disc Brake Specific Design
Optimized for disc brake systems with no compromise for brake track requirements.

UHM Carbon Finish with Split Visual Design
Half-and-half color treatment enhances track presence and visual differentiation.

Race-Proven Stiffness Profile
Engineered for sprint loads, gate starts, and high-speed stability.

Material: High Modulus Carbon Fiber

Construction: Supersized™ Crown Spoke Bed Design

Process: Vacuum Molded

Hole Count: 36H

Brake Compatibility: Disc Only

Tubeless: Tubeless Ready

Valve: Presta
Finish: UHM Carbon with
Split Color Design

Sizes:
20” (ISO 406)
ERD: ~364 mm
External Width: ~30 mm
Internal Width: ~23 mm
Weight: ~319g ±10%


24” (ISO 507)
ERD: ~464 mm
External Width: ~30 mm
Internal Width: ~23 mm
Weight: ~409g ±10%

SKUSP-RMCB406-BK

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