Discover on this page our entire range of anti-theft and alarm systems for your HYTRA quadCK HY 500 4. Find par example the disc lock, the U lock, the classic articulated lock, the alarm kit or even the cable lock to customize your machine. All the parts we offer are available, in stock and of high quality. Find adaptable or original parts. Many brands are available on our site (Silverline, Maxton, Gencod, Fifty Moto Parts... etc).