STERLING 9.4 ION R Xeros Climbing Rope

Lightweight precision meets proven durability.

The STERLING IonR 9.4 XEROS is a high-performance climbing rope engineered for climbers who demand lightweight efficiency without sacrificing handling or longevity. At 9.4mm, the IonR delivers easy clipping and smooth feeding through gear while maintaining the durability needed for repeated use on abrasive rock. The firm, tactile feel provides confidence on technical clips, while the UIAA Dry certified XEROS treatment keeps the rope performing in wet conditions and extends its lifespan in dusty, dirty environments.

Technical Specifications:

• Diameter: 9.4mm
• UIAA Falls: 6-7 (single rope rating)
• Impact Force: 8.9 kN
• Static Elongation: 7.0%
• Dynamic Elongation: 32%
• Sheath Percentage: 38%
• Weight: 58 g/m
• Certifications: UIAA 101, EN 892, UIAA Dry certified

Why IonR?

The IonR's 9.4mm diameter strikes the ideal balance for climbers seeking weight savings without stepping down to ultra-thin ropes. At just 58 g/m, a 70m IonR weighs approximately 4 kg (8.8 lbs)—noticeably lighter than thicker ropes, making it perfect for long approaches, multi-pitch routes, and alpine objectives where every gram counts. Despite the reduced diameter, the 38% sheath percentage and unique sheath construction deliver exceptional abrasion resistance and compatibility with a wide range of belay devices.

Key Features:

• Lightweight 58 g/m construction reduces pack weight on long routes
• 6-7 UIAA fall rating exceeds minimum standards for reliable safety margins
• Low static elongation (7.0%) for efficient toproping and minimal sag
• 32% dynamic elongation provides soft catches with controlled stretch
• 38% sheath percentage delivers durability in a lightweight package
• UIAA Dry certified with Sterling XEROS technology for water and dirt resistance
• Made with bluesign® certified raw materials for environmental responsibility
• Firm, tactile feel makes clipping quick and confident
• Smooth sheath reduces rope drag through gear and carabiners
• Middle mark on solid color options; bi-color eliminates the need for marking
• Available in 60m, 70m, and 80m lengths
• Color options: Blue, Yellow, Bi-Color Yellow

Performance Breakdown:

The IonR's 6-7 UIAA fall rating provides confidence on redpoint attempts and long trad pitches. The 32% dynamic elongation delivers soft catches that protect gear placements while minimizing the bouncy feel that can disrupt your balance. With only 7.0% static elongation—one of the lowest in its class—the rope feels incredibly efficient when working moves on toprope or ascending fixed lines, with minimal sag or stretch.

The unique sheath construction is engineered for compatibility with a wide range of belay devices, from tube-style devices to assisted-braking models. The smooth sheath surface reduces friction through carabiners and quickdraws, minimizing rope drag on wandering routes while maintaining excellent handling characteristics for belaying and rappelling.

Ideal For:

Sport climbing, trad climbing, multi-pitch routes, alpine climbing, redpointing, and any application where lightweight performance matters. The IonR is perfect for climbers who want to reduce pack weight on long approaches or multi-pitch objectives without sacrificing the durability and handling needed for regular use.

Whether you're projecting your hardest sport route, linking multi-pitch classics, or pushing into alpine terrain, the STERLING IonR 9.4 XEROS delivers the lightweight efficiency, proven durability, and precise handling that performance-oriented climbers demand.