Shimano Alivio SL-M3100-L Shifter - Left 3-Speed RapidFire Plus Optical Gear Display MFPN=STM116-BKAG Wolf Tooth Premium headsets are

Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro

Built with featherweight performance-stretch denim

Color Black Rings 40 Number of Chainrings Single Crank Length (mm) 170 Drivetrain Speeds 9 Drivetrain Speeds 10 Drivetrain Speeds 11 BB Included No Pedal Spindle 9/16" Spindle Interface Type Shimano Hollowtech II Chainring BCD 110 Shimano Asymmetric Chainline/Hub Compatibility 135/142 MTB Hubs Chainline/Hub Compatibility 141/148 Boost Hubs Designed for ebike Yes Defined Color Black

}TRP Hylex Hood Replacments Black Pair

Bearing Grade Stainless Steel Headset Type Integrated S

Shimano Alivio SL-M3100-L Shifter - Left 3-Speed RapidFire Plus Optical Gear Display MFPN=STM116-BKAG Wolf Tooth Premium headsets areShimano Alivio SL M3100 L Shifter Left 3 Speed RapidFire Plus Optical Gear Display. The Shimano Alivio SL M3100 Left Shifter provides responsive rear shifting for 9 speed mountain bike drivetrains. TECH SPECS Double or Triple Triple Drivetrain Speeds 9 Front Der Shifter Compatibility Shimano Mountain Shifter Style Trigger