Shimano
Tiagra 4500 Series 9sp Rear Derailleur

• Tiagra rear derailleurs are Mega9 compatible
• Wide link design increases rigidity and service life
• Advanced light action for low-friction shifting up or down the block
• Alloy body's and outer link leads to lower weight without compromising strength and durability
• 11-tooth pulleys for reduced pulley wear and chain noise
• Fluorine-coated link pin bushings for low-friction performance
• Compatible with 9-speed compact drive systems
• SS model is compatible with both compact 34-50 and standard 39-52 cranksets
• Weight - 255g