• Alivio M3100 series shifters
• 2x9 and 3x9 options enable a variety of riding styles
• 2-speed front shifter uses single-paddle Rapidfire Plus Mono technology for the most simple & intuitive front shifting
• Rapidfire Plus rear shifter mechanism allows up to 3 downshifts at once
• Easy to read optical gear display
• Optislick cables included
• Pairs of shifters also include SP-41 cable housing