WIZ Racing Products are a UK based manufacturer for sliders that have been established since 1989.The WIZ Sparky Knee Sliders are used by racers at all levels such as Karl Harris, Ian Lougher, Michael Laverty plus many other riders throughout the UK, Europe and the world.UK based manufacturerTitanium layer used under the slider surfaceUsed by racers such as Karl Harris, Ian Lougher, Michael Laverty plus many moreIndividually handmade in the UKMade with quality materials with a solid designGreat durability and fantastic value for moneyThe WIZ Sparky Knee Sliders are made to be used and perform to a professional racer standard with help and input from these riders. They use a Titanium layer under the Slider surface which when contact is made with the road causes sparks behind the rider.Please note - Titanium will reduce in size with use, and in some cases one or two bolts may flip out and leave a small space. But as we place so much titanium in the slider.WIZ knee sliders are individuall