If you regularly need to leave your bike in busy, high-risk areas, you need a bike lock that you can rely on and with the Evolution Std Lock you can do exactly that. Kryptonite has built it with a super-tough 14mm thick hardened steel shackle and a double deadbolt cylinder lock that’s both drill and pick resistant. It’s so good it’s been awarded the gold Sold Secure rating and as it comes with Kryptonite’s convenient Flexframe mount, you can attach it to your preferred position on your frame for easy carrying.