SunRace M403 Trigger Shifter — 7/8-Speed, Right-Hand

The SunRace M403 Trigger Shifter is a dependable gear control solution designed for 7- and 8-speed rear drivetrains on mountain, hybrid, and recreational bicycles. Its ergonomic thumb and index finger lever design delivers positive, reliable shifting with intuitive operation—ideal for everyday riding and casual trail use.

Constructed with durable internals and a compact, flat-bar mount, the M403 offers smooth, predictable gear changes and easy installation. Compatible with both SunRace and Shimano-style indexed systems, this shifter is a practical replacement or upgrade for entry-level bikes in need of responsive shifting performance.

Key Features

• Right-hand trigger shifter for 7- and 8-speed rear drivetrains

• Clear, reliable indexed shifting

• Ergonomic thumb and finger levers for comfortable use

• Compatible with SunRace and Shimano indexing standards

• Durable construction for daily riding and recreational use

A straightforward, value-focused shifter that keeps your drivetrain responsive and shifting precise.