SRAM_MTB_Type2_X0_Silver_MY13_md
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Those questions have now been answered, as today the US company officially revealed their Type 2 rear derailleur, which will be initially available on XO and X9 mechs.

What is Type 2? (and why the odd name SRAM?) Rear derailleur bounce and chain slap is all but eliminated due to SRAM's Roller Bearing Clutch technology, which basically means inside the mech is contained a one-way roller clutch. This prevents the mech flapping back and forth over rough ground, something which usually leads to the chain falling off, or just a very noisy ride as it punishes the chainstays.

With a press of a button the system is released, allowing the rear wheel to be easily removed. Needle bearings are self lubricated to keep action smooth all the time. As for shifting action itself, it's described as 'consistent', how it differs to a regular shifter remains to be seen. Shimano's design results in a noticeably heavier shift at the lever paddle, not a problem in itself.

Type 2 rear derailleurs will be available in August 2012. No prices yet.

Mech specs:

X0 TYPE 2 Rear Derailleur

  • Exact Actuation for precise and dependable

    10-speed performance

  • Focused chassis design for all conditions and usage
  • 235g (medium cage) clutch adds 30 grams to a standard RD
  • 36-tooth cassette capable
  • 3 cage lengths available: short for DH, medium for 2X10

    and long for 3X10

  • 3 graphic colours available: Silver, Black, Red
SRAM_MTB_Type2_X9_Grey_MY13_md

X9 TYPE 2 Rear Derailleur

  • Exact Actuation for precise and dependable 10-speed performance
  • Focused chassis design for all conditions and usage
  • 250g (medium cage) clutch adds 30 grams to a standard RD
  • 36-tooth cassette capable
  • 3 cage lengths available: short for DH, medium for 2X10

    and long for 3X10

  • 2 graphic colours available: Grey, white

www.sram.com