Specialized Hillbilly Grid Gravity T9 Enduro 27. 5" Tire Grips Where the Trail Gets Shifty Steep, slippery, loose, and wet. If those are the conditions you love, then the Hillbilly Grid Gravity T9 was built for exactly that terrain. The Deep spike center knobs dig into loose soil and bite down where softer tires wash out, and the high-volume block-in-block shoulder knobs bite hard in corners without folding under load. The GRIPTON T9 compound is the key ingredient here. It rebounds slowly, damps terrain-induced chatter, and holds grip on those slimy, wet roots and wet rock slabs that send other tires flying all over the trail. The Grid Gravity two-ply casing adds a serious layer of protection underneath it all, keeping the tire stable when you pedal hard into a corner or compress it on a jump face. Features GRIPTON T9 compound high-damping rubber that rebounds slowly to grip loose, slippery, and wet terrain while reducing deflection on rough surfaces Deep spike center knobs dig into loose soil and maintain traction on soft, shifting ground Block-in-block shoulder knobs provide supported cornering on steep, off-camber, and high-load turns Block-in-block transition knobs reinforce the tire structure, bridge the gap between center and shoulder tread, and lower rolling resistance across mixed terrain Grid Gravity two-ply casing burly dual-ply construction for flat protection, cornering stability, and casing integrity under enduro, park, and downhill loads Tubeless-ready (2Bliss) easy tubeless setup with or without tubes; add sealant and go Specifications Size27. 5" x 2. 4Width2. 4"Compound GRIPTON T9Casing Grid Gravity (2-ply)TPI60Bead Folding Tubeless Ready Yes (2Bliss Ready)Conditions Loose, Wet, Steep, Slippery Weight~1, 240g Intended Use Enduro, Downhill | Specialized | Hillbilly Grid Gravity T9 Enduro 27. 5" Tire 27. 5X2. 4 | Rubber