Shimano DEORE M4100 4pcs groupset Rear Derailleur Chain Cassette Right Shifter 1. M4100 10S Right Shifter (NO window / Window, {OPTICAL GEAR DISPLAY } ) The DEORE 10-speed right-side shifter benefits from the same technologies as XTR, DEORE XT and SLX; I-SpecEV. This offers you greater ergonomic adjustments so you can tailor your handlebar con-trols much more to your liking. Together with the speed of RAPIDFIRE PLUS and a TWO-WAY RE-LEASE feature you can shift up and down the 10 gears of your cassette faster than ever before. ?20% quicker lever access time ?Compact design and lightweight ?Quicker lever access and light operation force maintains rider concentration ?Greater flexibility and action-optimized cockpit layout ?2-WAY RELEASE for instant push/pull movements 2. M4100 Cassette 42T or 46T The SHIMANO DEORE CS-M4100 10-speed cassette offers a wide range of gearing options. With its lightweight sprocket carrier, it delivers smooth gear steps and precise shifting. ?Ride anywhere with smooth and precise HG shifting ?10-speed cassette sprocket: 11-46T, 11-42T (HG500-10) 3. RD-M5120-SGS Rear Derailleur . Use for 46T / RD-M4120-SGS Rear Derailleur Use for 42T SHIMANO DEORE - Rear Derailleur - SHIMANO SHADOW RD+ - 2x11, 1x10, 2x10-speed Utilizing the SHIMANO SHADOW RD+ design, the SHIMANO DEORE M5120 rear derailleur delivers consistent MTB shifting performance over rough terrain. The low profile design avoids damage from rocks whiles SHIMANO's chain stabilizing technology reduces chain drop and makes for a quiet drivetrain in all gear positions. Stable drivetrain on the trail Low-profile design avoids damage from rocks Chain stabilizer reduces chain drop, slap and noise Silent drivetrain in all gear positions Decreased rear derailleur and chain tension in low gear Max. low sprocket 42T (2x11/10-speed), 46T (1x10-speed) 4. HG54 10S Chain / CN-4601 Chain Perfect for 10-speed mountain bikes, the HG-54 is a directional Super Narrow HG-X chain with a mud-shedding design. ?Mud shedding design ?Directional chain ***These are OEM Shimano Parts, Brand new, Never Installed on Bike, Never used in any way, just NOT in retail packaging.***