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Selecting the right bike shifters and components is crucial for a smooth and efficient cycling experience. The correct parts can enhance performance, improve shifting precision, and ensure greater reliability on any terrain. Investing in quality components means a more enjoyable ride, whether you're a casual rider or a seasoned cyclist.
Model: MG-MG-BS-3X7S; 3 x 7 / 21 Speed Bike Twist Shifter with Handle Grips Set.
One-time Multi-gear Switch: Multi-gear switch can be completed through a simple wrist rotation action, without the need for per-gear operation, effectively reduce hand fatigue, suitable for long riding, the operation is flexible and simple, fits for kids...
Wide Application: Suitable for universal handlebar end with a diameter of 0.87inch (22.2mm), to meet the needs of various types of bikes, such as mountain bikes, kids bike, cruiser bike, commuting bike, tricycle etc.
High Adaptability: Smooth gear changing, strong compatibility, suitable for various models of rear derailleur, easy to install.
Shifter Specification: Speed: 3 x 6 / 18 Speed; Cable length of 3 speed shifter: 180 cm / 70.87 inch; Cable length of 6 speed shifter: 2100 mm / 82.7 inch; Pull Ratio: 2:1; Suitable for 22.2mm bike handlebar. Please check the speed of your bike and make...
Visual Speed Display: You can accurately find the speed when changing speed to meet your riding need, improve riding efficiency. Very suitable for bicycle beginners.
Package List: 3 Speed Left Shifter x 1; 6 Speed Right Shifter x 1, Handlebar Grip x 2. We provide excellent customer service, please feel free to contact us if you have any questions.
One-time Multi-gear Switch: Multi-gear switch can be completed through a simple wrist rotation action, without the need for per-gear operation, effectively reduce hand fatigue, suitable for long riding, the operation is flexible and simple, fits for kids...
🚲 【PERFECT 3x7 SPEED UPGRADE】 Specifically engineered for 21-speed drivetrains, this integrated set features a 3-speed left lever and a 7-speed right lever. It’s the ultimate "all-in-one" replacement for mountain bikes (MTB), hybrids, and road...
👌【ERGONOMIC EZ-FIRE PLUS DESIGN】 Say goodbye to hand fatigue! Our humanized trigger-style handle utilizes EZ-FIRE PLUS technology, allowing you to upshift and downshift effortlessly using just your thumb and index finger. The smooth, tactile...
📊 【CRYSTAL CLEAR VISUAL INDICATOR】 Stop looking down at your chain! The built-in, high-definition visual gear display lets you confirm your gear position at a single glance. This real-time feedback helps riders maintain the perfect cadence, making...
🛠️ 【UNIVERSAL FIT & READY TO INSTALL】 Standardized to fit 22.2mm (7/8") handlebars, compatible with almost all major bike brands. Each set comes pre-equipped with premium stainless steel shifter cables, saving you the hassle of extra shopping...
Precise 3x7 Speed Shifting: This 21 speed bike shifter set includes one left 3-speed and one right 7-speed twist shifter, providing smooth and accurate gear changes for 21-speed bicycles.
Durable Plastic Handle Grip: Made with sturdy plastic handle grips and a matte black finish, providing reliable durability and a comfortable grip for everyday cycling.
Complete Cable Set Included: Comes with pre-installed shift cables, including a 74.8 in (1.9 m) left cable and 86.6 in (2.2 m) right cable for convenient installation.
Clear Gear Indicator: Built-in numbered gear display with pointer allows riders to quickly identify current speed settings and adjust gears easily.
【⚙️ Universal Bike Compatibility】Designed as versatile bicycle parts, these shifters compatible with most 3x7 speed transmission systems. Suitable for mountain bike, road bike, city bike, and folding bike applications. These mountain bike parts...
【🚲 3x7 Speed Precise Control】This bicycle gear shifter provides precise 3x7 speed control, giving you 21 different gear combinations for any terrain. The 7 speed shifter system allows smooth transitions between gears, making it an ideal mountain...
【🔧 Durable Aluminum Construction】Crafted from high-quality aluminum alloy, this shift lever set offers exceptional durability and corrosion resistance. The robust construction ensures these mountain bike shifter units withstand rough trail...
【👆 Intuitive Thumb Shifting Design】Experience effortless gear changes with the thumb-operated bicycle shifter design. The right 7 speed shifter features trigger-style operation with separate levers for upshifting and downshifting, while the left...
【Premium Material】-- This bike brake shifters is made of high quality aluminum alloy material, which is durable and lightweight. 3 speed left, 7 speed right, totally 21 speed for optional. All shifter come with cable wires,offering precise and...
【3 x 7 Speed】-- The bike shifters are marked with 3 speed or 7 speed. The left gear shifter for 3 speed and the right shifter for 7 speed. Featuring two shift levers, one lever for down-shifts and one level for up-shifts.
【Ergonomic Design】-- The shifter brake handle adopt integrated design with trigger type handles, the ergonomic shape of the handle makes it more comfortable, stable and easy to control. It can be adjusted to your own needs within reach.
【With Gear Indicator】-- Designed with gear display indicator, which allows you easily identify the gear, making shift control much more easier.
Model: EMERK bicycle gear lever. 3x7 Speed Twist Shifter with Handle Grips Set. Suitable for front and rear gears and brakes.
Material: Made of high-quality plastic and durable, light, and robust metal.Has the most significant safety and stable quality. And non-slip rubber grips for better braking power and smooth operation.
Convenient shifting: Shifting can be done with only fingers so that the rider maintains a safe and stable grip and can perform at the best performance.
Application: They are suitable for 21-speed mountain bikes, commuter bikes, folding bicycles, kids, or youth bikes. The Twist Shifter Set minimizes fatigue in your hands, wrists, and elbows on long rides.
3x7 SPEED: You can use only left gear shifter for 3 speed and only right shifter for 7 speed and both left and right shifter for 3x7 speed.
Optical Gear Display Indicator: All shifter come with wires, with noise-dampening bumper stopper, offering precise and consistent shifting performance. Designed with optical gear display indicator to show you the gear position
Trigger Type Handle: Right shifter is a trigger-type 7 speed shifter, with one lever for down-shifts and a thumb button for up-shifts. Left shifter is a ratcheting thumb lever for triple cranksets.
Ergonomic Design: Compatible with liner-pull, cantilever, roller, and mechanical disc brakes, Ergonomic design for more comfortable operation
Quality material: bike shift derailleur cable and brake cable are made of PVC and stainless steel material, heat and rust resistant, they are durable to use for a long while, providing smooth using experience to your riding trip
Variable speed cable set: 2 m transmission cable shell is 4 mm in thickness, front transmission length is 1.55 m, interior wire of rear variable speed is 2.2 m, their length can be clipped to a proper size that meets your needs
Brake cable: 2.5 m cable housing is 5 mm in thickness, front brake cable length is 1.1 m, rear brake cable length is 1.8 cm, they are wear resistant to provide safety to cyclist
Ample quantity: you will receive 1 piece 2 m transmission cable shell (4 mm), 2 pieces inner variable speed cable, 1 piece 2.5 m brake wire outer tube (5 mm), 2 pieces inner brake cable, 6 pieces O rings, 8 pieces tail ends, 8 pieces brake copper sleeves...
Suits For: MTB mountain bike, road bike, folding bike, commuter bike fixed gear bike etc.The diameter of handlebar 22.2mm .
Gear View Window Design: Both the left and right shift levers are equipped with a gear display window that make you view the gear easily and quickly during the ride.
High quality material: The bicycle gear lever is made of high strength nylon, with light weight, integrated design, and easy control.
This article is part of our complete guide Cycling — browse all our comparisons and buying guides.
Last update on 2026-10-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Bike Shifters & Parts
Understanding Shifter Types
Trigger Shifters: Operated by levers, typically found on mountain bikes and hybrids. They offer quick, intuitive gear changes with a push of a thumb or forefinger.
Grip Shifters: Twist-action shifters integrated into the handlebar grip. Popular for their simplicity and ability to shift multiple gears at once, often favored by beginners or commuters.
Sti/Ergo Levers: Integrated brake and shift levers, common on road bikes. They allow for shifting without moving your hands from the brake hoods, offering aerodynamic benefits and quick access.
Key Considerations for Compatibility
Speed Count: Shifters must match the number of gears on your rear cassette (e.g., 9-speed shifter for a 9-speed cassette).
Brand Ecosystem: While some cross-brand compatibility exists, shifters generally perform best with derailleurs and cassettes from the same manufacturer (e.g., Shimano with Shimano, SRAM with SRAM).
Cable Pull Ratio: This determines how much cable is pulled for each shift. Mismatched ratios can lead to poor shifting performance.
Other Essential Components
Derailleurs: Front and rear derailleurs work in tandem with shifters to move the chain across the cogs and chainrings. Ensure they are compatible with your shifter's speed count and brand.
Cassettes and Chainrings: These are the cogs and gears your chain runs on. Their tooth count affects gear range, and compatibility with your drivetrain is essential.
Cables and Housing: High-quality, properly routed cables and housing are vital for smooth, reliable shifting. They are often overlooked but significantly impact performance.
Frequently Asked Questions
How do I know what speed shifter I need?
The 'speed' of a shifter refers to the number of cogs on your rear cassette. Count the number of cogs on your bike's rear wheel; this will tell you if you need a 7-speed, 10-speed, 11-speed, or other compatible shifter.
Can I mix brands of shifters and derailleurs?
While some cross-brand compatibility is possible, especially within certain speed counts, it's generally recommended to use shifters, derailleurs, and cassettes from the same manufacturer for optimal performance and reliability. Brand ecosystems are designed to work together seamlessly.
What is the difference between road bike shifters and mountain bike shifters?
Road bike shifters are typically integrated with brake levers (STI/Ergo) for aerodynamics and quick access, while mountain bike shifters are often separate trigger or grip units designed for intuitive use with gloves and varied hand positions. They also have different cable pull ratios.
How often should bike shifter cables be replaced?
Shifter cable and housing maintenance is crucial for smooth operation. It's recommended to replace them every 1-2 years, or sooner if you notice stiff shifting, sticking, or inconsistent gear changes. Regular cleaning and lubrication can extend their life.
Are grip shifters reliable for performance cycling?
Grip shifters are known for their simplicity and ease of use, making them popular for casual riding and commuting. While reliable for their intended purpose, performance cyclists often prefer trigger or STI shifters for their speed, precision, and ergonomic advantages in demanding conditions.
As an Amazon Associate, we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated and are subject to change.
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