Original Shimano parts guarantees that all components work perfectly for optimum performance and maximum safety and longevity.

For all the chatter about electronic shifting replacing mechanical, the place where people will love it or hate it is at the shift lever. Shimano rightly lavished plenty of attention when they designed the Dura-Ace Di2 STI Shifters.In order for the Di2 levers to work at shifting your bike, they must be used in conjunction with the Di2 front derailleur, rear derailleur, battery pack, and wiring kit. The most obvious advantage to going electronic is the fact that the cable routing doesn’t add friction to the system. No cables = no friction. Add to that the system is fast. Really fast. Faster than downtube shifting. 30% faster than shifting on mechanical Shimano Dura-Ace 7900. Better still, the shifting feel is much lighter. You can do it when you’re tired. You can do it with “weak” fingers. You don’t have to move your wrists or forearm.Unlike mechanical Dura-Ace, the Di2 shift lever blade doesn’t move inward. Instead there are two paddles behind the unidirectional carbon-fiber lever blade. The one closer to the handlebar still does the traditional shifting with the spring (aka onto smaller cogs in the rear, onto bigger in the front), and the one further does the traditional shifting against the spring (aka onto taller cogs in back onto smaller in front). They each have 2mm of travel. Each push results in one shift. Though if you’re coasting, you can “pre-shift” any number of gears, and the system will take up the shifting when you start pedaling. Shimano refined their STI lever when going electric. The levers are slimmer, closer to pre-STI levers, with some more ergonomic refining. Shimano shaved down their profile because they don’t need to allow for derailleur cable routing and the internal hardware it takes to precisely shift cable. The shift positions should still closely mimic mechanical Dura-Ace. The lever body, which they refer to as the “perch” has been better shaped for greater long-distance comfort.

Shimano’s M986 XTR Shadow Plus rear derailleur is a game changer. The innovative motion damping switch allows you to virtually lock out the bottom pulley of the derailleur, eliminating chain throw, chain slap, and extraneous drivetrain noise — in other words the drivetrain issues you have while riding rough trails at high speed. Simply flip the switch to its -Inchoff-Inch setting to remove the wheel or fine tune the shifting. Combine that with the unobtrusive Shadow derailleur profile, improved cable pull ratio and sealed top and bottom pulleys and you get the paragon of all-mountain derailleurs.

Shimano Nexus 8-Speed Tapfire Brake/Shift Lever.

ShimanoUltegra 6700 Quick Release Skewer Rear Item Specifications: Color

Component installation doesn’t get any easier than this. The Shimano designed direct mount is simple and foolproof. This Shimano XT Direct Mount Double Front Derailleur FD-M786D is a traditional styled (bottom-swing) front derailleur. It’s nearly identical to the clamp-on FD-M786 part, save for the lack of a clamp. Instead, this one has a flat surface with an upright rib on the back that corresponds to the groove in the flat Direct Mount you’ll find on your seat tube. One bolt holds it all together, and your only adjustment will be up and down in relation to the chainrings. Since there’s no way to twist the derailleur around the seat tube, it goes on lined up perfectly with the chainrings, and your shifting should be spot on once the cable tension and limit screws are set. It has been designed to optimize its function with two chainrings. To this end, the cage length and shaping is specific to the smaller diameter differential between the big and little rings on a 2×10 DynaSys drivetrain. Whether you run a 26/38t or a 28/42t crank, this is the changer you’ll want. The limit screws are angled outward to facilitate adjustment for convoluted rear suspension designs as well.The Shimano XT Direct Mount Double Front Derailleur FD-M786D is specifically designed for use with Shimano’s XT Double Crankset and directional 10-speed HG-94 chain, and the maximum chainring size is 42 teeth. The big difference between this derailleur and the triple-compatible version is that this one has a shorter cage. Using it with an XT triple crank would result in the chain dragging across the bridge at the bottom of the cage in many of the rear cogs when you ride in the 24t small ring. It can be used with top- or bottom-pull cable routing.