We&';ve always had a love-hate relationship with kickstands. When they work properly, they&';re great-a simple and easy way to leave your bike perched. But somehow, they always seem to fail when you least expect it, ending with a loud CRASH! and a scratched-up bike. So, we decided to develop a kickstand that does its job and does it well. And keep in mind, this kickstand was specifically designed for Rolls with 650b x 2.3" tires. Specifically designed for Specialized Roll and its 650b x 2.3" tires. Simple mounting takes the sting out of assembly. Balances your bike flawlessly