The specialized rockhopper expert 29 mountain bike 2017 makes sure that you39re always leading the run thanks to its light durable and exceedingly capable design with an a1 sl aluminium frame construction the rockhopper provides a compliant durable platform working perfectly with the trail 29 geometry the geometry features a low bottom bracket roomy top tube and short chainstays to keep you ripping and confident both up and down the trails for the spec the specialized rockhopper expe