2 x WTB Riddler 700x45c Cross Country Gravel Tyres. A model that’s at home wherever you love to ride, the WTB Riddler 700x45c Cross Country Tyre accelerates quickly and offers low rolling resistance, but it’s also ready to attack loose corners as you tackle tough gravel or cyclocross (CX) courses. Pair of Tyres Supplied. The large, supported toothy side knobs and densely packed, low centre tread make the WTB Riddler 45c tyre hit beyond the gravity enthused as multiple widths and wheel sizes also keep the cross country, weight-conscious happy. Built for unfaltering speed through a wide range of conditions, the Riddler delivers swift efficiency for riders who value traction but still prioritise leading the pack at the end of a long ride. Looking for a gravel tread that keeps your legs on their game for hours on end while also accommodating longer dirt tours with ease? The Riddler is equally at home on your local cyclocross (CX) course or gravel B-road. TCS (Tubeless Compatible System): TCS tyres boast the ride benefits of a tubeless tyre with the reduced weight of a non-UST tyre. TCS tyres combine WTB’s lightweight casing with a sealant tubeless, UST compliant bead. Compound: Dual DNA 50a/60a. Casing: Single-ply 60 TPI. Use: Cross Country / All Mountain; Conditions: Dry to Damp / Hardpack to Sand. Recommended Pressure: 30-55 PSI. Level: TCS Light (fast rolling).