Diamondback 700c Wheels Insight 2 Performance Hybrid Bike (2011 Model) Insight 6061-T6 butted aluminum performance hybrid frame with formed hooded top tube, integrated head tube, and vertical compliance stays Insight integrated Aero Alloy straight blade with an alloy steerer Shimano Alivio Rapid Fire 8-speed shifters Avid SD-3 linear pull brakes 20 spoke front & 24 spoke rear wheels with Freedom Racine Sport 2.0 double wall rims