Shimano altus m310 7 speed trigger shifteraltus rapidfire mtb gear shift pods can be used with any brake lever and are easily fitted to handlebars features rapidfire system uses ergonomic shaped lever for easy accurate gear selection optical gear display for 7 speed or front triple a 2 year warranty is offered with all shimano products from chain reaction cycles 3 years on dura ace and xtr products buy shimano components from chain reaction cycles the worlds largest online bike store