Shimano

OT-RS900 Derailleur Cable Housing - 4.0mm x 240mm, Black, 10 pc.

Shimano OT-RS900 Derailleur Cable Housing is a pre-cut, lubricated 4.0mm shift housing designed to reduce cable friction for cleaner, more consistent rear shifting—ideal for service replacements or building multiple bikes with the same known-good housing spec.

This 240mm section uses a coil outer construction that supports smooth cable movement while maintaining the housing stability needed for accurate rear derailleur indexing. Supplied in black and packaged as a 10-piece set for efficient workshop stocking.

• 4.0mm Rear Derailleur Shift Housing - Proper diameter for shift systems, helping preserve crisp indexing and lever feel
• 240mm Pre-Cut Length - Speeds up cable-and-housing jobs and improves service consistency
• Coil Outer Construction - Balances flexibility for routing with the support needed for accurate shifting
• Entirely Greased Liner - Lowers friction for smoother shifting and helps protect against cable drag as conditions change
• Compatibility - Designed for use with Shimano Dura-Ace R9100 systems and other setups requiring 4mm shift outer casing
• 10-Pack Value - Practical quantity for frequent service, builds, or team/household bikes