SRAM Type 2 Rear Derailleurs - XO and X9 2013 Models |

First Look

Derailleur eliminates chain slap.

New mtb rear mechanical uses a one way roller clutch to eliminate chain slap suitable for 29ers

SRAM MTB Type2 X0 Silver mountain bike rear derailleur

It was only a matter of time.

Following the release of the revolutionary shadow plus derailleur technology from the Shimano guys, who first revealed it on their XTR line, we were wondering whether or not SRAM was going to design something similar for their mountain bike derailleurs.

Early this spring those questions have been answered, as the SRAM company officially unveiled their Type 2 rear derailleur, which will only be initially available on XO and X9 models. And may get trickled into their lower end models the following years to come, the same way Shimano has marketed the technology.

What exactly is it?

The bouncing of the rear derailleur and chain slap on the under side of the 29ers chain stay is all but eliminated due to SRAM’s Roller Bearing Clutch technology, which basically means inside the mechanical is contained a one-way type roller clutch. This prevents the lower pulley and arm

from flipping back and forth over rough single track, something which can occasionally lead to the chain coming off your front chainrings, or just a very noisy ride as it punishes the lower side of your chain stays.

With a press of a button the system can lock your pulley arm to the forward position, allowing the rear wheel to be easily removed and put back on. The needle bearings in the mechanical are self lubricating to keep the action feeling smooth all the time. As for shifting action itself, it’s described as ‘consistent’, how it differs to a regular shifter remains for the future of it getting everyday use. Shimano’s design results in a noticeably heavier shift at the lever paddle, not a problem in itself, but just some differences in the two companies.

These rear models will be available in August 2012.