Sphyke C3N Bike Combination locks
So you’ve got yourself a massive Kryptonite lock to secure your frame to the bike rack, but what’s securing your components to your frame? Likely nothing a wrench couldn’t quickly dismantle. And that’s where Sphyke’s C3N system steps in. These easy to use replacement lock nuts take the place of traditional nuts, protected by a combination lock cap whose code is customizable to your liking. Sphyke’s C3N solutions cover both your front and rear wheels, saddle, and post, resist vice grip attacks, and remain inconspicuous until tested thanks to a waterproof, dustproof rubber cover.
Check out the full lineup at Sphyke – roughly $27 to $40 each