The Hive announces the release of the XCX.ST, the most recent incarnation of the popular XCX chain retention system. 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. It’ll also work with ‘cross bikes (where there are no BB spacers to replace with a chain guide) and other bikes where BB clutter dissuades you from mounting a device around it.
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.
The Hive’s spokesman said: “The need for a lightweight, reliable single ring retention system designed specifically for cross country riders and racers was originally recognized by e*thirteen more than 8 years ago, and while we were set to charge forth with the product back then, it became apparent that the drivetrain technologies at the time were not quite equipped to handle the change. With the advent of the 10 speed MTB drivetrain and the 11/36 cassette, the XCX has finally found its place. When coupled with any of our odd tooth sized e*thirteen Guide-ring options, the XCX becomes a highly precise drivetrain tuning tool.”
The initial prototype of the XCX.ST first debuted on the race bike of Orbea cross-country rider Julien Absalon in late 2009. Since its first appearance and second place podium at the World Championship XC race, the XCX.ST has garnered much attention – enough attention to catch the eye of Specialized Bicycles.
“Specialized Bicycles was one of the first companies to understand the value this product possesses in our off-road cycling community, especially among the 29er crowd” added Jonas. “I give Specialized a lot of credit for recognizing the potential of this product and specing it on their Stumpjumper Expert Carbon 29 Evo. This spec goes a long way in legitimizing the 1×10 generation of riders who have been home-brewing “1-by” solutions in their garages for years now.”
Added: 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
global availability: fall/winter 2010
Update – And MRP too
And just to keep stirring the debate – here’s the new prototype from MRP seen at Eurobike. It’s basically a clamp on version of MRP’s ’1x’ chain device.
Posted on: September 8, 2010