microSHIFT Acolyte Super Short Rear Derailleur - 8 Speed, Super Short Cage, Black 

Delivering full sized performance in a compact sized package, the Acolyte Super Short rear derailleur provides a full set of features for off road riding on a platform that's compatible with small wheel sizes down to 20". With the same features as the standard sized Acolyte, you can ride Super Short as hard as you want, no matter how tall you stand.

• Direct path cable routing for smooth and responsive shifting
• Compatible with 11-34T to 11-38T 8-speed cassettes
• Compatible with Acolyte shifters only

microSHIFT Acolyte Super Short Rear Derailleur - 8 Speed, Super Short Cage, Black, With SpringLock 

Delivering full sized performance in a compact sized package, the Acolyte Super Short rear derailleur provides a full set of features for off road riding on a platform that's compatible with small wheel sizes down to 20". With the same features as the standard sized Acolyte, you can ride Super Short as hard as you want, no matter how tall you stand.

• Innovative SpringLock chain retention keeps chain in place over rough terrain and can be turned on and off
• Direct path cable routing for smooth and responsive shifting
• Compatible with 11-34T to 11-38T 8-speed cassettes
• Compatible with Acolyte shifters only

8 Speed, Super Short Cage, Black and With Spring Lock 

• Color: Black
• Largest Cog: 38
• Rear Derailleur Mount Type: 10x1 Standard
• Chain Wrap Capacity (teeth): 27
• Rear Der/Shifter Compatibility: microSHIFT Acolyte
• Cage Length: Short
• Drivetrain Speeds: 8