Totally disengaging the clutch aids wheel removal, letting the cage rotate on its pivot freely. The rear derailleur features ShimanoвЂ™s Shadow RD+ technology вЂ“ where the mech has a low-profile design that reduces the chances of it hitting the chainstay as it pivots over rough terrain, and has an adjustable and on/off switchable clutch to reduce chainslap and improve mech shifting accuracy. The Deore M6100 rear derailleur looks good and resisted wear well. The Deore FC-M6100-1 170mm crankset with 30t chainring I tested weighed 782g on my scales. This means chainrings from ShimanoвЂ™s other ranges will fit, increasing the available tooth options. TheyвЂ™re available with either a 30t or 32t narrow-wide вЂDynamic Chain Engagement+вЂ™ chainring with alternating tooth thicknesses, often referred to as вЂnarrow-wideвЂ™, thatвЂ™s fitted to the cranks using ShimanoвЂ™s direct-mount system. The cranks come in 170mm or 175mm lengths, and have enough chainline and Q-factor options to suit any modern bike. This is clamped to the bottom bracket using pinch bolts and tightened with a preload cap. However, the bottom-bracket axle does use HollowTech II technology, where the bottom-bracket axle is integrated into the right-hand (driveside) crank arm. The latest Deore cranks donвЂ™t use ShimanoвЂ™s long-standing HollowTech technology вЂ“ where the crank arms are forged as two hollow pieces and bonded together вЂ“ instead they use a forged construction with a trellised rear to save weight while retaining strength. The crank rub is only aesthetic, but the finish took much longer to degrade than other cranks IвЂ™ve used recently.

Shimano deore m615 rear derailleur