Tire Style: MX / Off-Road Ibex - Climb like a mountain goat! Designed for Endurocross and extreme enduro-type conditions. Super-Soft and flexible rubber compound for maximum bump absorption and terrain compliance for obstacles like rock gardens and log crossings High wet-traction compound developed by top pro Endurocross riders Open aggressive drive pattern for max grip and cleanout Shoulder knob pattern designed for large contact patch and support for soft compound during cornering Ultra soft casing for maximum terrain adaptation Made for low speed riding only (less than 40 mph recommended) US PART # WHEEL SIZE TT/TL LOADING SPEED INDEX O.D. (IN) S.W. (IN) MAX LOADING (LBS) MAX PSI TREAD DEPTH (MM) 047741441B1CEX REAR 90/100-14 TT 49M 22 4 408 20 13.50 047741641B1CEX REAR 90/100-16 TT 52M 24 4 441 20 13.50 047741864CEX REAR 110/100-18 TT 64M 26 5 616 20 16.00 047741813CEX REAR 120/100-18 TT 64M 27 5 693 20 16.00 04774213CEX FRONT 80/100-21 TT 51M 27 3 429 20 11.00 047742140CEX FRONT 90/100-21 TT 57M 28 4 507 20 11.00 047741913B1CEX REAR 120/90-19 TT 66M 28 5 661 20 16.00