For MTB gearing configurations
Short or long cage
Weight: 210 g. (Short cage)
8 or 9-spd compatible

Double servo-panta mechanism : Smooth and precise chain movement to the aimed gear allows for comfortable shifting.

Features
Proven Shimano precision shifting
Smooth operation
Light actionLight weight, tough to break
Simple cable routing (straight pull)
30g lighter (target) than current model

For MTB gearing configurations
Short or long cage
Weight: 210 g. (Short cage)
8 or 9-spd compatible

Double servo-panta mechanism : Smooth and precise chain movement to the aimed gear allows for comfortable shifting.

Features
Proven Shimano precision shifting
Smooth operation
Light actionLight weight, tough to break
Simple cable routing (straight pull)
30g lighter (target) than current model

For MTB gearing configurations
Short or long cage
Weight: 235 g. (Short cage)
8 or 9-spd compatible

Deore XT "SHIMANO SHADOW RD" : low profile design intended for more aggressive riding. Quiet : will not contact chain stay. Super low profile design carries many benefits. Because of its low profile and single tension construction, no hit to chain stay in rough riding conditions.The result is smooth and silent performance.

Features
Low profile for improved durability
Low profile design saves RD from damage in a narrow passage.
Direct routing reduces the risk of snagging.
Stronger return spring for more crisp shifting feeling
Capacity : GS 33T, SGS 45T

For MTB gearing configurations
Short or long cage
Weight: 200 g (Short cage)
8 or 9-spd compatible

Low-Normal for the smoothest shifting under load, drive train durability and pre-selecting gears: Best matched with Dual Control Levers. Low normal spring return(Rapid rise)..

For MTB gearing configurations
Short or long cage
Weight: 200 g (Short cage)
8 or 9-spd compatible

Top-Normal for Precision up shifting and emergency downshifting. Preferred by traditonal and gravity riders: Best matched with Rapidfire Plus shifters.

For MTB gearing configurations
Short or long cage
Weight: 189 g. (Short cage)
8 or 9-spd compatible

M972 9-spd top normal only,"SHIMANO SHADOW RD" : low profile design intended for more aggressive riding. Quiet : will not contact chain stay. Super low profile design carries many benefits. Because of its low profile and single tension construction, no hit to chain stay in rough riding conditions.The result is smooth and silent performance

Features
Low profile for improved durability
Low profile design saves RD from damage in a narrow passage.
Direct routing reduces the risk of snagging.
Stronger return spring for more crisp shifting feeling
Capacity : GS 33T, SGS 45T

For MTB gearing configurations
Medium cage
Weight: 197 g.
8 or 9-spd compatible

With a potent mix of high-grade materials that includes a forged aluminum body, titanium spring, and reinforced carbon composite, the X.0 is a pro-ready rear derailleur that's lighter, stiffer, smoother and flat-out better looking than anything out there. Compatible with Sram 1:1 shifters. Carbon cage.

For MTB gearing configurations
Long cage
Weight: 203 g.
8 or 9-spd compatible

Tough just got tougher! From Extreme Freeriding to the rigors of World Cup XC racing, the X.O system performs with distinction. Sram's superior 1:1 actuation ratio paired with a new super tough carbon, and aluminum cage design results in durability and performance. X.O is the lightweight 8X World Champion!

Features:

• New CNC'd 100% Carbon Outer Cage
• 1:1 Superior Shift Quality
• 20th Anniversary 7075 Aluminum B-bolt and Graphics
• Titanium Main Spring
• Outside Facing Limit Screws - Intuitive Adjustment
• Sealed Bearings
• D.I.R.T: Direct Route Technology
• Drivetrain Spacing: Shimano/SRAM 9
• Largest Cog: 34 teeth
• Chain Wrap Capacity: 45 teeth
• Derailleur Action: Top-Normal (Traditional)
• Color: Silver/Black