Best Rear Derailleur Series

Shimano RDM310DL Altus GS 7/8-speed Rear Der Black,Long Cage

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.

Cage Lengths: SGS-long, Capacity: 45T, Derailleur Action: Top-Normal (Traditional).
Derailleur Color: black, Drivetrain Spacing: Shimano/SRAM 9, Largest Cog: 34teeth, Min/Max: 11/34T.
Shifter/Rear Derailleur : SRAM 1:1, Speeds: 7/8sp, Speeds: 8sp, Speeds: 9sp, Weight: 310g.

【Rigorous Design】:Double (top or bottom) pull, 3-speed design, can matching 6/7/8/9/10/11 speed rear derailleur (★Don't matching 12 speed rear derailleur)..
【Dimension】:Clip ring supports 31.8/34.9mm diameter tube. Crankset: 3 gears, compatible crankset 22-42T. universal for most mountain bike..
【Easy To Use】:Attach the front derailleur to the bike frame, temporarily tighten the toggle bolts, and then adjust the flat part of the chain guide outer guide plate to be parallel to the flat surface of the maximum crankset. Make adjustments, make it have 1-3mm space between the outer guide of the chain guide and the maximum crankset. After the adjustment is complete, tighten the ring bolts..
【SUITABLE】:Fits for most bikes like BMX, MTB, Mountain Bike，Road Bike. Great accessory for outdoor riding..
【Superior Material】: Bicycle Front Derailleur, made of high-quality aluminum alloy material, solid and solid chain guide plate, steel mark, chrome plated, bright, wear-resistant, rust-proof, high strength, durable, safe and reliable..

*Model：RD-TY21B rear derailleur compatible with 6/7 speed mountain bikes..
*Note:The rear derailleur is direct mount,not hub bolt mount .Please check the mount type of the original part before ordering..
*Stability: Durable aluminum alloy material and excellent shifting performance ensure safe and stable riding..
*Wide application: Rear derailleur is easy to use and maintain.Suitable for MTB,mountain bikes, road bikes, folding bicycles and so on..
*Important: Please feel free to contact if you have any questions, we will provide quality service..

An exclusive: Huffy's Valcon is ideal for ages 5-9 and a rider height of 44-56 inches.
sleek charcoal gray frame with vibrant orange accents.
Arrives with all tools you need for easy assembly.
just follow the simple step-by-step instructions, our product manual guides you through every step.
Durable steel frame is backed by our limited lifetime warranty (see owner's manual for details).
front suspension fork and rear spring shock absorb....
The 6-speed indexed Shimano derailleur combines with twist grip shifting for smooth transitions.
removable rear derailleur guard protects the gears.
Great design, 6 speeds, full suspension, front and rear handbrakes - the Valcon is the right choice when your child is done with training wheels and....

Groupset includes all electronic components for a 2x setup in a single package - hydraulic brake/shift lever pair, front and rear flat mount disc calipers, 160mm 6-bolt disc rotors, front and rear derailleurs, battery, charger and cord, and Quick Start Guide.
The SRAM Force eTap AXS HRD brake/shift System features simple and intuitive eTap shift logic and is AXS enabled for easy personalization.
Brakes feature contact point adjustment and reach adjust to customize hand and braking preferences.
The Force eTap AXS front derailleur features classic SRAM Yaw trimless cage technology with an optimized cage profile for SRAM Force front chainring combinations.
Battery placement on the front derailleur is streamlined to allow for more rear tire clearance.

Daul Disc Brake Systems: make brakes more sensitive.
Upgrade frame: Foldable frame to make it easy to store and carry.
High quality accessories:Shimano 3*7 shifters,shimano front derailleur and rear derailleur,3 spoke Mag wheels.
Full Suspension: Front and rear shock absorbers make you more comfortable.
folding bikes for adults, fits up to 5’3-5’9”.

Model:RD-TZ31-A rear derailleur compatible with 6/7 speed mountain bikes..
Note:The bike rear derailleur is direct mount,not hub bolt mount..
Stability: Durable aluminum alloy material and excellent shifting performance ensure safe and stable riding..
Application: Suitable for MTB,mountain bikes, road bikes, folding bicycles,tricycles ect..
Important: Please feel free to contact if you have any questions..

Upright riding style keeps your back and shoulders comfortable.
foot-forward design helps maintain proper leg extension.
Fenders protect you from splashes, while the classic rear carrier provides convenient storage..
This bicycle arrives with 85% assembled. You just need to install the front wheel, handlebar, pedals, seat and air up the tires. It was very easy to assemble it in 20-30 minutes..
Shimano 7speed rear derailleur combines with the micro-shift twist shifter to deliver 7 speeds on-demand for uphill climbing, downhill riding, or pure acceleration.
removable rear derailleur guard ensures consistent gear operation.
For the safety of customers, we strictly abide by the American bicycle standards, and has passed CPSC 16 CFR 1512 Requirement..