Leveraging the legendary history of SRAM shifting, the GX 2x10 rear derailleur provides incredible shifting speed and precision.EXACT ACTUATION™ technology eliminates slop and shifting variation.ROLLER BEARING CLUTCH™ technology delivers maximum drivetrain stability™even through the most punishing terrain.And with CAGE LOCK™ technology, wheel removal and installation are easier than ever.Features:- EXACT ACTUATION™ for precise and dependable 10-speed performance - Cage lengths:short, medium and long - Also available without ROLLER BEARING CLUTCH™ Specifications:- Speeds:10-speed - Material:Aluminum cage - Weight:302g (long cage with ROLLER BEARING CLUTCH™) - Compatibility:EXACT ACTUATION™ - Cage Sizes:Long, Medium, Short - Max Tooth:36t - Technology Highlight(s):EXACT ACTUATION™, DIRECT ROUTE, ROLLER BEARING CLUTCH™, CAGE LOCK™ Technology:CAGE LOCK™:With CAGE LOCK™ technology in the rear derailleur, wheel removal and installation™as well as chain installation™becomes faster and simpler.Just pushing the cage forward to create slack and lock it into place.Direct Route™:Heres the dirt on middlemen:they suck.Thats why Direct Route Technology doesnt have one.Instead, the cable routes directly to the actuation mechanism.Result™ Less friction.Less effort.More oomph.Plus its impervious to cable housing damage. EXACT ACTUATION™:When we launched our road technology from scratch we reapplied our MTB proven SRAM 1:1 actuation ratio (shifter cable travel :derailleur movement) for 10 speed rear shifting.EA helps to simplify/stabilize the uneasy act of balancing rear derailleur hanger design, tight cog spacing and exact cable tension.The result:the easiest index shifting system to set up and it stays that way.ROLLER BEARING CLUTCH™:ROLLER BEARING CLUTCH™ rear derailleurs deliver maximum drivetrain stability™even through the most punishing terrain.With ROLLER BEARING CLUTCH™ technology, derailleur bounce and chain slap are eliminated without sacrificing precision.For 2x10V systems.- Compatible with cassettes 11-42T.