The microSHIFT TS39 Left-Hand 2-Speed Thumb Tap Shifter is designed for riders seeking smooth, precise, and comfortable front shifting performance. Perfect for MTB, hybrid, trekking, and commuter bikes, this Shimano mountain-compatible thumb shifter delivers light, positive indexing with an intuitive ergonomic layout, ideal for new builds, upgrades, or restoring older bikes.
Smooth & Light Shifting Performance
The TS39 Thumb Tap shifter offers a light-action shift feel with crisp, accurate indexing, making front derailleur adjustments effortless on climbs, technical terrain, or daily commutes. Its ergonomic thumb trigger design ensures easy reach and consistent comfort on long rides.
Easy-to-Read Optical Gear Indicator
Equipped with an optical gear indicator, the TS39 allows riders to instantly see which gear they’re in, perfect for beginners, returning cyclists, or anyone who wants quick visual confirmation of their front gear selection.
Durable & Reliable Construction
Built using high-quality composite clamp and lever materials, this shifter provides long-lasting durability without unnecessary weight. Designed to withstand the demands of off-road and everyday riding, it’s a dependable component for any Shimano-style 2x drivetrain.
Shimano Mountain Compatibility
The TS39 is fully compatible with Shimano mountain front derailleurs, making it a versatile and hassle-free upgrade for countless 2x MTB and hybrid setups.
- Clear, easy-to-read optical gear indicator
- Light shifting action with a strong, positive index click
- Ergonomic thumb triggers for comfort and control
- Compatible with Shimano mountain 2-speed front derailleurs
- Durable composite clamp and lever construction
- Ideal for MTB, hybrid, trekking, and commuter bikes