Schwalbe Racing Ralph Evo Super Ground MTB TyreOverhauled to bring you the speed, grip and control for modern XC (cross-country) trails, the cross country rider’s favourite Racing Ralph tyre will guide you over the most technical terrain with ease.Rear-Specific Cross-Country TyreSpecifically tuned for rear wheel use, this tyre enables you to take on the most technical XC trails and come out on top. Its tubeless compatibility ensures excellent cornering grip and puncture protection and the low rolling resistance ensure you carry your speed for longer.Features: Compound: ADDIX Speed Bead Type: Folding Casing: Single Ply, 67 tpi Puncture Protection: Yes, Super Ground Tubeless Compatible: YesNumerous grip edges in the tread centre for super traction and excellent accelerationDistinct shoulder studs for excellent lateral grip Good rolling properties and extremely quietSold Individually Recommended Tyre Pressures:  26x2.25”: 1.8-3.7 Bar (26-54 psi) 27.5x2.25”: 1.8-3.7 Bar (26-54 psi) 29x2.1”: 2-4 Bar (30-55 psi) 29x2.25”: 1.8-3.7 Bar (26-54 psi) 29x2.35”: 1.6-3.5 Bar (23-50 psi) Weights: 26x2.25”: 610g 27.5x2.25”: 640g 29x2.1”: 675g 29x2.25”: 670g 29x2.35”: 750gTechnologies: ADDIX Speed: ADDIX Speed is the compound for XC race specialists, it catapults our XC tires into a new performance dimension. It's the answer for those who’d like to go even faster. There’s only one thing that ADDIX Speed really loves and that’s speed. So the rolling resistance has been chopped yet again Super Ground: Combines lightweight and stability. Feels comfortable in any terrain. Balanced ratio of puncture protection and smooth-rolling. For flowing trails, long rides and any terrain Tubeless Technology: For all ambitious sports cyclists, Tubeless is the right choice. Only Tubeless achieves the best values in terms of more speed, grip, puncture protection and comfort E-25: Tyres with the recommendation "E-25" are the perfect choice for all pedelecs with pedal assistance up to 25 kph. The most important criterion for this recommendation: securityBuy Schwalbe Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.