ST-EF51 Mountain Bike Trigger Shifter & V-Brake Lever Set – 3x7 & 3x8 Speed

Upgrade your mountain bike's control with the ST-EF51 EZ Fire Plus Trigger Shifter and V-Brake Lever Set. Engineered for smooth, responsive gear changes and compatible with a wide range of MTB brake systems, this combo set is the go-to choice for riders who demand reliable performance on every trail. Made in Mainland China.

Choose Your Configuration

Option 1 – 3x7 Speed: 3-Speed Left Shifter + 7-Speed Right Shifter (21-Speed total)
Option 2 – 3x8 Speed: 3-Speed Left Shifter + 8-Speed Right Shifter (24-Speed total)

Key Features

Light, Precise Shifting: EZ Fire Plus trigger mechanism delivers effortless, accurate gear changes even on demanding terrain
Numbered Gear Display: Positioned below the handlebar for an at-a-glance view of your current gear position — no guesswork while riding
Ergonomic Integrated Design: Combined shift and brake lever body sits naturally in your hand, reducing fatigue on long rides
Wide Brake Compatibility: Works with linear-pull (V-brake), cantilever, roller, and mechanical disc brakes
Internal Cable Routing Ready: Slim lever body supports both standard and internal cable routing setups
Universal Handlebar Fit: 22.2 mm installation aperture fits the vast majority of MTB flat handlebars

Specifications

Model	ST-EF51 (EZ Fire Plus)
Color	Black
Speeds Available	3x7 (21-speed) / 3x8 (24-speed)
Clamp Diameter	22.2 mm
Brake Compatibility	V-brake, Cantilever, Roller, Mechanical Disc
Country of Origin	Made in Mainland China

What's in the Box?

1x Left Shifter (3-Speed) with Brake Lever
1x Right Shifter (7-Speed or 8-Speed) with Brake Lever

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For general cycling safety guidelines, visit the U.S. Consumer Product Safety Commission – Bicycle Safety.

Learn more: Shifter (bicycle part)

Frequently Asked Questions

Q: Is the ST-EF51 trigger shifter compatible with my mountain bike handlebars?

A: Yes — the ST-EF51 shifter set features a standard 22.2 mm clamp diameter, which fits the vast majority of MTB flat and riser handlebars. Always verify your handlebar diameter before installation.

Q: What brake types work with this V-brake lever set?

A: This lever set is compatible with linear-pull (V-brake), cantilever, roller, and mechanical disc brakes, giving you excellent flexibility across different MTB setups.

Q: What is the difference between the 3x7 and 3x8 speed options?

A: The 3x7 option gives you 21 total gear combinations (3-speed front x 7-speed rear), while the 3x8 option provides 24 total gear combinations (3-speed front x 8-speed rear). Choose based on your existing drivetrain and rear cassette configuration.

Q: Does this shifter support internal cable routing?

A: Yes. The slim main lever body of the ST-EF51 is designed to be compatible with both standard and internal cable routing, making it a versatile upgrade for modern MTB frames.