Schwalbe racing ralph performance cx tyreschwalbes racing ralph performance cx tyre is made for speed whether youre pushing the pace on the road or venturing off road onto loose terrain this racing raplh tyre provides excellent grip regardless of whats under your tyres complete with a smooth roll and added puncture protection schwalbes racing ralph tyre is at its best when youre pushing hard featurespuncture protectiongrip for on road and off road terrainfast rolling characteristicsdur