Shimano Altus M2000 9 Speed Rear DerailleurPerfect for both road cycling and gravel adventure riding disciplines, this 9 speed rear derailleur provides smooth and reliable shifting operation wherever your next ride takes you. Benefitting from a wider linkage, this model ensures maximum durability with more precise shifting. Its B tension spring also delivers quick and easy wheel installation and removal. Coming complete with high-level surface treatment for extra protection against wear, this rear mech is all set for clocking up the miles.Mega 9The 9-speed gear cluster actualises close-ratio gearing without impairing wide gear range.HG SprocketsThe distinctively designed Hyperglide sprockets incorporate specially positioned shift ramps and tooth profiles for improved chain control during shifting. Fast and responsive indexed shifting is the result. The HG cassette sprocket, which was developed for the MTB 10-speed system, underwent comprehensive optimization to achieve super-highly efficient shifting.Shimano Shadow RDThe mechanism rear derailleur, Shimano Shadow RD, is intended for more aggressive riding. Its super low-profile design carries many benefits. Because of its low profile and single tension construction, the derailleur does not hit the chain stay in rough riding conditions. The result is smooth and silent performance.Features: Use: Road, Gravel Speed: 9 speed Cage Type: Long Cage Total Capacity: 45T Low Sprocket: Max: 36T; Min: 32T Max Front Difference: 22T Top Sprocket: Max: 12T; Min: 11T Pulley Teeth: 11T Pulley Cage: SGS Cable Adjuster: Yes Sunken Type Pulley Bolt: YesA 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.