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Description
Precise IGH Shifting, Built for Everyday Riding
The Shimano Alfine SL-S503 is an 8-speed Rapidfire Plus trigger shifter designed specifically for internally geared hubs, including the Shimano Alfine and Nexus Inter-8 series. The compact pod mounts cleanly to flat bars and puts clean, indexed gear changes at your fingertips — one finger up, one finger down — with no derailleur to worry about and no ambiguity about which gear you're in.
An optical gear display shows your current gear at a glance, and the 2-Way Release mechanism lets you shift with either a pull of the index finger or a push of the thumb, so the motion feels natural whether you're accelerating out of a stop or settling into a cruise. Cable and housing are included, making this a straightforward drop-in upgrade or replacement for any flat-bar IGH-equipped bike.
No Guesswork, No Missed Shifts
- Rapidfire Plus trigger action with 2-Way Release — shift with index finger pull or thumb push.
- Optical gear display shows current gear position at a glance.
- Tuned specifically for Alfine and Nexus Inter-8 pitch ratio — indexed shifting matches hub detents precisely.
- 22.2mm clamp diameter fits standard flat bars.
- Includes 2,100mm stainless steel inner cable with SP41 outer housing and cable fixing bolt unit for CJ-8S20 cassette joint.
- Right-hand shifter; single-lever design for right-side IGH use.
UPC / Part Numbers
| Option | SKU | UPC |
|---|---|---|
| Default | ESLS503ALLL3 | 192790451763 |
