G-Form Youth Pro-X4 Knee Guards - Black Small/Medium CheckoutSpec= 210x60 Trek }SRAM X0 Hub Conversion Caps

}SRAM X0 Hub Conversion Caps Rear 10X135mm XD Driver Fits Rise XX Roam 40 Roam 30 and 2015 Rise 60 wheels

The ST 5 Flow saddle delivers comfort ergonomics and performance for people riding their bikes for transportation and errands

Made to fit 19mm crank spindles and American bottom bracket frames

Steel inner ring Color Gray Rings 50/34 Number of Chainrings Double Crank Length (mm) 170 Crank Intended Use Road Drivetrain Speeds 9 BB Included No Pedal Spindle 9/16" Spindle Interface Type Shimano Hollowtech II Chainring BCD 110 Shimano Asymmetric Chainline/Hub Compatibility 135/142 Road Disc Hubs > 415 mm Chainstay Defined Color Gray Size 170Mm

G-Form Youth Pro-X4 Knee Guards - Black Small/Medium CheckoutSpec= 210x60 Trek }SRAM X0 Hub Conversion CapsThe G Form Pro X4 Knee Guards are designed to provide athletes with superior protection and comfort. These knee guards feature SmartFlex technology which remains flexible during movement but hardens on impact to absorb energy and protect against injuries. The breathable fabric ensures optimal ventilation while the ergonomic design offers a secure and comfortable fit. Additionally the guards are machine washable for easy maintenance. SmartFlex