Certified Shimano parts
Shifting not quite right? Replacement cable housing might be in order. Shimanos SP41 Derailleur Housing gives you a shop-quality replacement to get bikes back to baseline.

• Replacement bulk shift cable housing for shop or home mechanic use.
• OEM bulk housing for Shimano cable-actuated derailleur systems
• Pre-lubricated from factory with special silicone grease for light-action shifts