Rows of 4 small, low profile and siped knobs line the center portion flanked by larger more aggressive shoulder lugs on each side for improved corner traction Through the new RSR dual layer compound and low profile, siped tread design, the Helldiver shines with a perfect balance of traction and rolling resistance Excellent tire for hard pack, down hill single track trails and gravity riding on well packed routes ENDTC � Enduro specific Dual Tread Compound that features a lower rolling resistance value than previous dual tread compounds, while also being longer wearing ATC - Optimized for enduro and trail riding, the Advanced Trail Casing (ATC) uses a layer of SCT on the sidewalls and a K-Armor belt under the tread area TLR/TR - Tubeless (Light) Race is the lightest tubeless ready version of tires Kenda offers and also features an improved bead shape for better retention Tubeless 27.5x2.4 584 TBLS - Fold Belted Bk/Blk 50 120 ENDTC/ATC/TLD NoUPC/EAN/GTIN: 047853639605