Topeak Defender iGlow X Road Fender Set. Topeak has created quite the work of genius with their Defender iGlow X Road Fender Set. The fenders alone, with simple installation and rock solid construction, are a marvel for road bikes, but for safety's sake the front and rear fenders both feature a super bright, 0.5W LED light integrated along the length of the fender. So in addition to keeping the effects of damp roads at bay, the fenders provide their own beacons of light to increase your visibility in low light or dark conditions. Installation is quick and intuitive with the rear fender installing tool free, while the front fender just needs a screwdriver. The fenders are designed for 700c road wheels with a maximum tire width of 700x25.