The Shimano Tourney TY300-SGS rear derailleur features SIS Rear Indexing and Double Servo technologies to provide smooth action with perfect tracking for the most accurate SIS shifting.

SIS Rear Index Shifting System provides smooth action

Double Servo enables the guide pulley to track the cogs closely while moving front to back optimizing each shift

Designed to keep the rear derailleur guide pulley at an optimum distance from each sprocket for accurate SIS shifting

13t upper and lower pulleys

Compatible with HG 6/7/8 speed chains

Largest Cog	34
Color	Black
Rear Der/Shifter Compatibility	Shimano Mountain
Rear Derailleur Mount Type	Dropout Claw Hanger
Drivetrain Speeds	7
Chain Wrap Capacity (teeth)	43
Cage Length	Long
Mount Type	BMX/Track Frame Hanger