Can I Upgrade The Altus Shifters On My Mountain Bike?
Can I Upgrade The Altus Shifters On My Mountain Bike? ALTUS is a 7/8-speed MTB-style component group for city sport and youth bikes. Can I use any shifter with Shimano derailleur? Shimano derailleur compatibility Most 8- and 9-speed Shimano mountain bike and road kit is inter-compatible because they both use the same cable pull ratio.