SRAM Apex XPLR PG-1231 12-speed cassette, 11–44T.

Maximum gear range, minimum effort: this 12-speed 11-44T cassette offers a 2x gear range in a 1x system and fits onto a standard 11-speed freehub for seamless integration. The progressive sprocket spacing ensures that the gaps between the sprockets are as small as possible when you’re riding fast, and become larger when you’re in climbing mode.

TECHNICAL SPECIFICATIONS:

• 1x 12-speed
• 400% gear range
• Sprocket sizes: 11, 12, 13, 15, 17, 19, 21, 24, 28, 32, 38, 44
• For use with XPLR rear derailleurs only
• Compatible with flat-top chains
• For HG freewheels
• Design: X-Range