The Profile Design 1/Seventeen stem embodies excellence in minimalist design for performance. With its adjustable ±17° angle and 3D forged 6061-T6 aluminum construction, this stem combines lightness, stiffness and versatility for demanding cyclists in road, gravel or triathlon. Its sleek design conceals sophisticated technical architecture: the 4-bolt faceplate ensures secure clamping and maximum rigidity, while the ability to mount the stem in positive or negative position offers a total adjustment range of 34° for perfect position tuning.

Technical Highlights

• 3D forged 6061-T6 aluminum construction: Three-dimensional forging optimizes stress distribution and eliminates weak zones, offering an excellent stiffness-to-weight ratio. This technique ensures consistent wall thickness and superior impact resistance.
• Reversible ±17° angle (73° or 107°): Mounted in positive position, the stem offers a 73° angle for aggressive and aerodynamic posture. Flipped, it provides 107° for a more upright and comfortable riding position on long distances.
• 4-bolt faceplate: The 4-bolt attachment evenly distributes clamping forces on the handlebar, avoiding force concentration points and ensuring optimal hold even on the roughest surfaces.
• Featherweight 128g to 162g: Depending on lengths (from 60 to 130mm), the 1/Seventeen stem displays a contained weight that doesn't penalize climbers while maintaining bulletproof robustness.
• 40mm stack height: This standard stem height ensures universal compatibility with most headsets and allows harmonious spacer stacking.

Geometry and Compatibility Standards

The 1/Seventeen stem respects modern cycling standards: Ø31.8mm handlebar clamp (oversize) compatible with the vast majority of road, gravel and MTB handlebars, and 1"1/8 (28.6mm) steerer tube universal. The 40mm clamp width offers a generous contact surface for uniform steerer clamping. The recommended torque of 5Nm must be scrupulously respected using a torque wrench to preserve aluminum integrity and ensure safety.

Available Variants

The 1/Seventeen range comes in eight lengths to suit all body types and riding styles:

• 60mm (EAN 723660006549) — Ref. RS117176081-1 — Ideal for ultra-compact cockpits or small frame sizes
• 70mm — Ref. RS117177081-1 — Upright position and increased maneuverability
• 80mm (EAN 723660006563) — Ref. RS117178081-1 — Versatile compromise for road and gravel
• 90mm (EAN 723660006570) — Ref. RS117179081-1 — Standard length, maximum versatility
• 100mm (EAN 723660006501) — Ref. RS117171081-1 — Reference for M/L frame sizes, weight 162g
• 110mm (EAN 723660006518) — Ref. RS117171181-1 — Extension for large sizes and aerodynamics
• 120mm — For cyclists seeking maximum reach
• 130mm — Extreme extension, ideal for triathlon and time trial

All lengths share the same clamping, angle and finish characteristics in matte black anodized with discreet markings, ensuring perfect visual integration with Profile Design handlebars and extensions (DRV, Sonic, Aeria ranges).

Applications and Compatibility

The 1/Seventeen is designed for road, gravel cyclists and triathletes seeking a balance between aero performance and position comfort. Its 17° angle represents a judicious compromise: less aggressive than flat or pure negative stems (0° to 7°), but sufficiently angled to maintain an efficient position. It pairs perfectly with Profile Design DRV handlebars (road/gravel) and the brand's carbon or aluminum extensions. For triathlon configurations integrating a hydration system, Profile Design offers a compatible HSF Aeria faceplate allowing bottle mounting independent of extensions.

Finish and Durability

The matte black anodized surface treatment does more than aesthetics: anodization protects aluminum against corrosion, scratches and environmental aggressions (salt, UV, humidity). Discreet white markings add a subtle contrast touch. The stem retains its luster even after thousands of kilometers in all conditions. The 6061-T6 aluminum benefits from heat treatment (T6) that maximizes its mechanical properties: hardness, tensile strength and elastic limit, ensuring exceptional longevity without permanent deformation.