The Sram X4 Rear Derailluer combines the best elements of Sram shifting with a stylish Sram design in an affordable price point. Intelligent material selection yields a lightweight high performance Sram derailleur. A compelling option for your 7-8 speed shifting needs.The Sram X4 Rear Mech.

1:1 Actuation™ is superior by design. Every unit of cable you pull moves the Sram derailleur the same amount. Actuation stays precise and fluid slogging through mud, bouncing off rocks, rutting through roots — wherever you find yourself, whatever conditions you're in. The Sram X4 Rear Mech is dependable, Tolerant, Easiest to set up, Easiest to adjust And, not coincidentally, The Sram X4 Rear Mech is the top choice of the top MTB riders. Got it? Good.

Direct Route Technology:  Here's the dirt on middlemen: they suck. That's why Direct Route Technology™ doesn't have one. Instead, the cable routes directly to the actuation mechanism. Result? Less friction. Less effort. More oomph. Plus it's impervious to cable housing damage. Nice.

Sram X4 Mech 7-8 speed Features:

Speeds: 7/8 Speed
Material: Alloy B-knuckle, alloy outer link, Steel cage w/ replaceable pulleys
Weight: 280g long cage
Colours: Silver, Black
Outer: Cage Steel
Compatibility: 1:1
Inner Cage: Grilon Composite
Bearings: Bushing
Cage Sizes: Long, Medium
Technology: 1:1 actuation ratio, Direct Route Technology for lighter effort shifting