PowerSpline Bottom Bracket Options:TruVativ PowerSpline Bottom Bracket - English (BSA), 68 x 113mm It has custom-tuned kinematics and

It has custom-tuned kinematics and suspension from the Specialized Ride Dynamics team—specifically for smaller riders—and appropriately sized components

and more of it than ever before possible

the Fuelselage and Fuelcell are sold separately

you’re able to ride almost any tire and pressure

the Sirrus X excels on pavement

PowerSpline Bottom Bracket Options:TruVativ PowerSpline Bottom Bracket - English (BSA), 68 x 113mm It has custom-tuned kinematics andThe SRAM PowerSpline bottom bracket features a proprietary spline design used with many OE spec moderately priced TruVativ cranks. Crank bolts are included Heat treated chromoly 12 spline spindle to make sure it can go the distance with even the most demanding riders