RNC BMX LEGEND FRONT LOAD STEM

The RNC BMX Legend Front Load Stem represents the next evolution in lightweight, high-performance BMX stem technology.

Precision CNC machined from premium 7050-T7451 aerospace-grade aluminum, the Legend was engineered to deliver an exceptional combination of strength, stiffness, fracture toughness, and minimal weight.

Through advanced CAD design and extensive 3D CNC machining, unnecessary material has been eliminated while maintaining strength in critical areas. The result is an incredibly lightweight stem weighing just 180 grams (6.35 oz).

PREMIUM 7050-T7451 AEROSPACE ALUMINUM

Unlike conventional BMX stems manufactured from 6061 or 7075 aluminum, the Legend is machined from 7050-T7451, a premium aerospace alloy selected for its exceptional combination of mechanical properties.

Why 7050-T7451?

Superior Strength to 6061 Aluminum

7050-T7451 offers significantly higher tensile and yield strength than conventional 6061-T6/T651 aluminum. This allows us to engineer a lightweight stem while maintaining excellent resistance to permanent deformation under demanding riding loads.

Exceptional Fracture Toughness Compared to 7075

While 7075-T6/T651 aluminum is known for its high tensile strength, 7050-T7451 offers a major advantage in fracture toughness.

Fracture toughness measures a material's ability to resist the growth of an existing crack. The higher fracture toughness of 7050-T7451 helps improve resistance to crack propagation under extreme loading conditions.

This is especially valuable in highly stressed components such as BMX stems, which experience repeated impacts, vibration, and heavy loading.

Engineered for Strength, Not Just Weight

Rather than simply choosing the aluminum alloy with the highest advertised tensile strength, we selected 7050-T7451 for its balance of strength, fracture toughness, and durability-related properties.

The result is a premium material ideally suited to our aggressively weight-optimized stem design.

ADVANCED 3D CNC MACHINING

The Legend Stem is extensively 3D CNC machined to remove unnecessary material while preserving critical structural areas.

Every contour and pocket has been carefully engineered to maximize strength-to-weight efficiency.

At just 180 grams, the Legend delivers an exceptionally lightweight design without relying on conventional 6061 aluminum.

HEAT-TREATED TITANIUM BOLTS

The Legend includes premium CNC-machined USA-produced implant-grade 6Al-4V titanium bolts.

These bolts are heat treated and aged to approximately 170,000 PSI tensile strength, providing exceptional strength while minimizing weight.

The titanium hardware complements the Legend's advanced aluminum construction, creating a premium lightweight stem assembly.

SPECIFICATIONS

• Model: RNC BMX Legend Front Load Stem
• Material: Aerospace-grade 7050-T7451 aluminum
• Manufacturing: Precision 3D CNC machined
• Bolts: USA-produced implant-grade 6Al-4V titanium
• Bolt Tensile Strength: Approximately 170,000 PSI
• Reach: 48mm
• Rise: 2.5mm
• Weight: 180 grams / 6.35 oz
• Design: Advanced weight-optimized construction
• Origin: 100% MADE IN THE USA

AVAILABLE COLORS

Silver • Black • Red • Blue • Purple • Green • Pink • Orange • Gold • Turquoise