The Sunrace TSM21 is a left-hand friction twist shifter that gives you smooth, reliable gear changes on single-speed or multi-speed bikes. It's a straightforward mechanical shifter with no indexing, meaning you twist the grip to find the exact gear position that works for your chain. This makes it ideal if you're running an older derailleur system, building a vintage bike, or just prefer the simplicity of friction shifting.
The Sunrace TSM21 is a left-hand friction twist shifter that gives you smooth, reliable gear changes on single-speed or multi-speed bikes. It's a straightforward mechanical shifter with no indexing, meaning you twist the grip to find the exact gear position that works for your chain. This makes it ideal if you're running an older derailleur system, building a vintage bike, or just prefer the simplicity of friction shifting.
This shifter suits riders who want dependable shifting without electronics or complex indexing systems. It works well on touring bikes, fixed-gear conversions, or any buil
Free same-day Click & Collect. Order online and collect from our London workshop, usually ready within a couple of hours. We will email you the moment it is ready.
Home delivery. Dispatched the same working day on orders placed before 3pm. Standard UK delivery is tracked and typically arrives in 2 to 3 working days.
Fitting while you wait. Buying a part you would rather not fit yourself? Our mechanics can fit most parts on the spot. Just ask when you collect.
30-day returns. Changed your mind? Return any unused item in its original packaging within 30 days for a full refund.
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