This new GX derailleur not only answers the EagleÌÎÌ_ÌÎå drivetrain`s need for greater capacity, but it`s also the next evolution of Sram`s proven, 1x-specific X-HorizonÌÎÌ_ÌÎå design This new GX derailleur not only answers the EagleÌÎÌ_ÌÎå drivetrain`s need for greater capacity, but it`s also the next evolution of Sram`s proven, 1x-specific X-HorizonÌÎÌ_ÌÎå design The larger, 14-tooth X-SyncÌÎÌ_ÌÎå lower pulley allows 10 to 50-tooth cassette, and also adds to Eagle`s overall smooth-pedaling feel New, Type-3 Roller Bearing ClutchÌÎÌ_ÌÎå features a smoother torque curve for a quieter, more consistent operation and feel Re-engineered mounting system and repositioned Cage LockÌÎÌ_ÌÎå add robustness EagleÌÎÌ_ÌÎå pulley technology provides greater efficiency, crisper shifting and quieter operation Compatible with all levels of Eagle drivetrain systems