Derailleurs move the chain up or down the cassette or chainrings. This action is what makes a bicycle easier or harder to pedal.
- Prevents chain derailment when shifting to inner ring - Adjustable hose-type clamp fits 1-1/8" to 1-3/8" seat tubes
The Box Four Rear Derailleur is the base of Prime 9 Technology that offers an affordable clutch based 1 by 8-speed derailleur that is simple and light; this makes it a perfect candidate for every entry-level bike that traditionally has a 3 by drive-train that is neither durable nor user friendly.
The Box Three Rear Derailleur simplifies the features found on the Prime 9 Box One and Two rear derailleurs making for a fully featured wallet friendly rear derailleur. Including a Limited Slip Clutch, Sealed bearing pulleys and a solid construction Box Three Rear derailleurs are compatible with 11-46 and 11-50t derailleurs making it one of the most versatile derailleur offerings for Prime 9.
The Box Two Prime 9 Rear Derailleur is very similar to the Box One version however, to be more wallet friendly, it offers a non adjustable Tri-Pack Clutch, bushing pulleys and some muted finishes. Box Two rear derailleurs are still optimized for 11-50t cassettes and offer durability and performance for the most demanding terrain, just at lower price!
- Required for use on carbon frames with carbon front derailleur braze on mounts - Compatible with all Campagnolo EPS front derailleurs - Increases the stiffness of carbon front derailleur braze-on mounts to handle the increase torque of EPS front derailleurs
The new Super Record 12x2 Speed mechanical front derailleur: lightness, design, fluidity, and effectiveness. The new Super Record 12x2 Speed mechanical front derailleur introduces many new techniques, starting with the leverage systems designed to speed up derailings. Less effort is needed to shift owing to the split front connecting rod, which prevents contact with the travel limit screw. Whilst the shape of the inner cage plate is engineered to guarantee maximum readiness for upshifting, the external monolith body in carbon fiber has been shaped to enhance the efficiency of the chain movement when going uphill and the readiness and fluidity in descent. The aesthetic impact of the component is consistent with the rest of the Super Record groupset due to the use of unidirectional carbon fiber and titanium stop screws. Micro-adjustments to the front derailleur position, which can be activated by the controls, help to prevent any contact with the chain, even in the case of maximum crossover. As regards compatibility, the new Super Record 12x2 Speed front derailleur allows the use of hoods measuring up to 32 mm thanks to the new upper connector rod and the double fixing position of the control cable.
The Campagnolo EKAR Rear Derailleur is designed for the 1x13-speed EKARndrivetrain with a gravel-orientated performance & build. - 2D parallelogram trajectory offers precise mechanical movement for 13 sprockets - High grade polymer pulley wheels (12T upper, 14T lower) allow for smooth chain running and secure retention - Carbon fiber-reinforced polyamide and anodized 7075 and 6082 alloys are lightweight, strong, and durable - Stainless steel bolts for strength and long-term resilience on gravel - Includes clutch lock for easy wheel removal Specifications: - Largest Cog: 44 - Rear Derailleur Mount Type: 10x1 Standard - Chain Wrap Capacity (teeth): 34 - Cage Length: Medium - Rear Der/Shifter Compatibility: Campy EKAR - Drivetrain Speeds: 13 - Weight: 275g
The Campagnolo Super Record EPS 12 speed rear derailleur offers improved shifting performance with a trajectory curve that is optimized for 11-29 and 11-32 cassettes. - Using 3D Embrace technology the inner mechanism embraces more teeth per sprocket thanks to the advanced position of the upper pulley - The 12-tooth pulley wheels allow for the integration of larger cassette range while keeping chain length the same - Upper body adjustments allow you to set the perfect position whether you're riding an 11-29 or 11-32 tooth cassette - An upper body return spring absorbs the energy of any bumps, preserving the hanger, and bringing the derailleur back to position - An aluminum upper body provides high resistance to impacts and greater stiffness - The lower part of the body is made of ultra-light technopolymer, reinforced with long carbon fibers Specifications: - Largest Cog: 32 - Rear Derailleur Mount Type: 10x1 Standard - Chain Wrap Capacity (teeth): 37 - Cage Length: Medium - Rear Der/Shifter Compatibility: Campy Record/Super Record EPS - Drivetrain Speeds: 12 - Weight: 234g
K-EDGE MTB Chain Guide is built to be the strongest and lightest solution to withstand the pedaling force of a derailed single ring chain in World Cup race conditions. - Full-cage design for chain retention under the most abusive cross situations - Braze-on mount and braze-on adapter clamp compatible - Fully adjustable for height, center-line, and angle - Optimized for 10 and 11spd drivetrains - CNC Machined from 6061-T6 Aluminum (no plastic parts) - Stainless Steel Hardware - Weight: 60.8 grams (excluding braze-on adapter clamp) - Compatibility: Single-ring bikes; frames with integrated braze-on front derailleur mount; also compatible with braze-on adapter clamps. All necessary hardware included - Optimized for 34T to 44T Chain Rings - “Hard to fit kits” may be needed for current applications, please contact Info@k-edge.com - Made in Boise, Idaho, USA - Lifetime Guarantee against material or manufacture defects. Damages due to abuse or crashing excluded
- Cover up those unfinished and unused FD mounts with MRP cover plates - Offered in Decapitator version with built-in bottle opener - Alloy with matching alloy fastener, 12g - Made in Grand Junction, CO USA
$11.99 - $12.99
Mezzo front derailleurs offer durable construction and seamless compatibility with existing systems, making repairs and upgrades easy. - Aluminum bracket, plastic body - Includes 31.8mm clamp adapter
M21 rear derailleurs are designed to work with 6- and 7-speed Shimano road and mountain shifters. Enjoy the wide variety of bikes you can get going again with M21 rear derailleurs. - Robust composite and steel construction - Compatible with Shimano 6- and 7-speed mountain and road systems
M21 rear derailleurs are designed to work with 6- and 7-speed Shimano road and mountain shifters. Enjoy the wide variety of bikes you can get going again with M21 rear derailleurs. - Robust composite and steel construction - Compatible with Shimano 6- and 7-speed mountain and road systems - Long cage for double or triple cranksets and 32T max cassette cog - Includes frame hanger attachment for use with older frame designs
M-series rear derailleurs are designed to work with 7, 8, and 9-speed Shimano-compatible mountain and road shifters. These legendary M26 rear derailleurs put cyclists of all ages back on their saddles with as little frustration as possible. - Robust composite and steel construction - Compatible with Shimano 7, 8, and 9-speed mountain and road systems
M-series rear derailleurs are designed to work with 7, 8, and 9-speed Shimano-compatible mountain and road shifters. These Mezzo rear derailleurs are light, robust, and reliable. You can count on them to get any bike on the road. - Weight-saving aluminum bracket body and outer link - Steel pulley cage for extra chain-rub durability - Compatible with Shimano 7, 8, and 9-speed mountain and road systems
$20.99 - $22.99
R8 front derailleurs feature a cold forged aluminum body and are optimized for 7 and 8-speed chains and Shimano-compatible road shifters.
R-series rear derailleurs are designed to work with 8 and 9-speed Shimano-compatible road shifters. These R8 rear derailleurs have composite and steel parts that weigh more but have the same durability and performance as R9 and R10 derailleurs. - Steel pulley cage for extra durability - Not compatible with Shimano Tiagra 4700 road system - Short cage for double crankset and 28T max cog - Long cage for triple crankset and 28T max cog
Optimized for Shimano compatible 9-speed road drivetrains, R9 front derailleurs feature metal construction and rapid shifting response. - Cold-forged aluminum body
M-series rear derailleurs are designed to work with 7, 8, and 9-speed Shimano-compatible mountain and road shifters. Marvo LT rear derailleurs are built with precision rigid aluminum construction. Let these miracle workers get any bike rolling again. - Lightweight aluminum construction - Steel pulley cage for extra chain-rub durability - Compatible with Shimano 7, 8, and 9-speed mountain and road systems
Full metal construction provides stiffness and durability in this Shimano 9-speed road compatible front derailleur. - Full aluminum construction - Compatible with 9-speed Shimano road drivetrains - Designed for use with 52/42/30T chainrings
Centos front derailleurs are precisely manufactured for responsive, accurate shifting under race conditions. - Compatible with Shimano Tiagra 4700 10-speed road systems - Includes adapter for 31.8 and 28.6mm seat tubes
R10 front derailleurs work with 10-speed Shimano-compatible road shifters. Designed to work with a variety of chainring combinations, these workhorse components will get you rolling again. - Cold-forged aluminum body
$31.99 - $33.99
R-series rear derailleurs are designed to work with Shimano-compatible road shifters. These R9 rear derailleurs combine compatibility, weight savings, and a robust design. - Weight-saving aluminum bracket body and outer link - Steel pulley cage for extra chain-rub durability - Compatible with Shimano 9 and 10-speed road systems - Not compatible with Shimano Tiagra 4700 road system - Short cage for double crankset 28T max cog setup - Medium cage for double crankset and 34T max cog - Long cage for triple crankset and 28T max cog
XLE Rear Derailleur for 10-speed Shimano drivetrains - For MEGA Sprockets w/large cog size 36-42T - Compatible with single, double, or triple cranksets - Total Capacity: 47T
Designed with the rider in mind, the ADVENT rear derailleur packs trail-ready features into an attainable wide-range drivetrain system. The derailleur kinematics are precisely tuned to use a more direct cable path, making the shifting feel consistent across the lowest and highest gears, and everything in between. - Clutch provides stronger chain management over rough terrain - Ratchet-and-pawl clutch is easily adjustable and repairable - Direct cable routing for smooth, responsive shifting - Compatible with 11-42T 9-speed cassettes - Compatible with ADVENT shifters only
With a race-worthy weight and the right gearing for any situation, microSHIFT's top-of-the-line ADVENT X rear derailleur delivers high-end performance without high-end headaches. By using a 10-speed chain and wide range 11-48T cassette with predictable, evenly spaced gear steps, ADVENT X allows you to find the right gear even in challenging conditions. Add in microSHIFT's proprietary ratchet-and-pawl clutch, larger pulleys with taller teeth for better chain retention, and metric adjustment hardware, and you've got everything you want and nothing you don't. - Compatible with ADVENT X 10-speed drivetrains only - Compatible with standard 10-speed chains - Ratchet-and-pawl clutch provides chain security and can be turned on and off with a switch - Metric adjustment hardware - Larger pulley and taller teeth for better chain security and higher ride height
• Converts Braze-on front Derailleurs to clamp on • Lightweight forged alloy • Weight: 28g
Converts braze-on front derailleurs to clamp-on. Available in multiple clamp diameters.
• Converts direct mount front derailleurs to clamp on • Lightweight alloy • Fits 68/73mm and 100mm bottom brackets • 34.9mm clamp
Want to build a single speed without having to buy a dedicated frame? Try the Melvin. The Melvin bolts to the frame where the rear derailleur would normally go and allows the use of a single speed rear wheel on bikes with vertical dropouts. - Machined aluminum tensioner bolts on to derailleur hanger - Adjustable spring tension and dual floating pulley - For frames with vertical dropouts - Fits hubs with 22-28Mm chainline (From inside of dropout) - Made in USA
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