SHIMANO SLX RD-M7100 Rear Derailleur Black, SGS, 12-Speed

SLX drivetrains seem to be an afterthought. We get it -- XT and XTR are flashy and featherweight, but when it comes to workhorse components, SLX is damn near impossible to beat. Thankfully, it also comes along with trickle-down technology from its pricier siblings, and it's easy to see with the new SLX RD-M7100 Rear Derailleur that's optimized with 12-speed technology, crisp shifting, and sleek graphics that elevate standards far above what we think of when we talk about mid-range groupsets. It comes ready to take on the big-guns, with a 51-tooth capacity (a whopping 10 extra teeth above the previous version), and the flexibility to run both of Shimano's 12-speed cassette offerings. The new SLX rear derailleur features a larger, 13-tooth pully wheel for an increase in efficiency and chain management while you're riding. This partners up with advance shifting performance to deliver decreased tension when you're in the big rings. More changes happened to the pulley cage, with an added bumper that protects your pulley wheel from impacts with rocks and branches -- an appreciated feature with the extra length that the derailleur hosts in order to accommodate all 12 cogs. The derailleur is built to accommodate both of Shimano's new 12-speed cassettes, the 10-51t, or 10-45t cassttes, so you can find the right gearing for your ride, regardless of you're charging full-speed through smooth ribbons of single track, or crunching up steep, seemingly endless fire roads on sky-high enduro climbs. One thing that we're thankful has stayed the same through the generations is the stabilizer switch that we saw trickling down from XT and XTR in the previous model. When engaged, this switch helps to eliminate chain slap and dropped chains by increasing spring tension. This is a valuable option for suspension systems that require chainstays and pivots located close to the rear derailleur. The RD M7100 keeps a good thing going with some of the previous model's improvements, including th...

Shimano's refinements to the latest Ultegra Di2 group are truly remarkable, and while we always fancy a full Dura-Ace build, we'd be hard pressed to decipher a difference in performance. That makes sense since Ultegra gets Dura Ace trickle down technology, and for rear derailleurs, the RD-R8050 borrows heavily from the firm's top-end Dura-Ace RD-R9150--including the low profile Shadow design. This profile places it closer inbound to the frame and tucks the derailleur under the cassette. This pro

Wide link design increases durability and precise shifting. 7/8 speed design. 13t guide pulley and 15t tension pulley for long wear. Max sprocket: 34t. Top-Normal (standard action) return spring.metal. Chain Wrap Capacity: 43teeth, Derailleur Action: Top-Normal (Traditional). Derailleur Color: black, Drivetrain Spacing: Shimano/SRAM 8, Largest Cog: 34teeth. Shifter/Rear Derailleur : Shimano, Speeds: 8sp, Weight: 326g.

* Model: RD-M410. * Mount Type: Direct Attachment. * Drivetrain Spacing: Shimano/SRAM 8. * Advanced light-action design, Teflon-coated bushings, Elegant and fashion. * SGS long cage design offers a wider gear range.* Comes with instruction manual.* Weight: about 310g. NOTE: This is a direct mount, if your frame with hook, you can use it. Cycling is the most popular way to travel, exercising, environmental protection, safety, no traffic jam and so on. The bicycle parts are important, Shimano bran

Features: Adopting aluminum alloy and ceramic material, this product is very durable to use. Can be applied for most mountain bike. Supporting for various speed shifting. Suitable for use 4 / 5 / 6 mm guide wheel screws. Offers you a better cycling experience. Specifications: Item: Bike Guide Roller Material: Aluminum Alloy + Ceramic Colour: Black, Golden (Optional) Diameter: 4 cm / 1.6 inch (11 T), 5 cm / 2.0 inch (13 T) Weight: 21-23 g Package Included: 2 * Bike Guide Ro