Shimano Ultegra RX Di2 RD-RX805 Rear Derailleur

With an integrated chain stabilizer mechanism, the Ultegra RX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an On/Off switch for the chain tensioner. The RD-RX805 Di2 version offers the digital precision of Shimano electronic shifting and synchronized shifting.

Features:

• Road derailleur with Shadow+ clutch technology for improved chain retention
• Compatible with both Dura Ace Di2 and Ultegra Di2 shifters
• Ideal for CX and gravel bikes
• Available in GS cage only
• Maximum front difference: 16T
• Total capacity: 39T
• Compatible with 11-28 to 11-34 cassettes

Specifications:

• Cage: GS
• Max Front Difference: 16T
• Maximum Cog: 34T
• Minimum Cog: 11T
• Primary Color: Grey
• RD Capacity: 39T
• RD Spring Type: Di2
• RD Weight: 280 g
• Speed: 11