e*thirteen XCX ST

"The XCX.ST is a seat tube mounted variation of the XCX that mounts to frames via a clamping device similar to those found on most front derailleurs. This XCX.ST version solves the mounting issues common to frames utilizing BB30 and other press-fit BB designs.
The XCX.ST retention system is also a highly adaptable product. It incorporates the adjustable upper wearplate of the World Cup winning LG1+ guide, is available in a “high-mount” or “low-mount” clamp design, utilizes a trick seat tube clamp cam to allow for chainline adjustment, and can be mounted to frames with 28.6, 31.8 or 34.9 seat tube diameters"

Tech Specs:

• backplate material: 6061-T6
• frame mounting style: seat tube clamp - high or low
• clamp diameter: 28.6/31.8/34.9
• wearplate adjustment: adjustable
• wearplate hardware: captive gold alloy
• chainring range: 32-44t
• chainline adjustment: 50 to 53mm
• weight: 71-75 g
• msrp: $99.95
• global availability: fall/winter 2010

Links:

Ride Monkey

The Hive

e13components