the other day at the bike shop as i was shopping for a new saddle bag and a better lock , the shopkeeper appraoched me and asked if i wanted to upgrade my 7 speed rear casette on my MTB to a 9 speed.

11-40t range, 320g claimed weight and hitting shops in June Praxis Cycles' 11-40t 10-speed mountain bike cassette has made its official debut at the Taipei Cycle Show. Costing just US$130 and ...