The Grappler RS Radial uses a rear-specific RS tread with taller center knobs and steeper ramp angles for strong braking bite, fast rolling, and reliable hookup under acceleration. Shoulder knobs are proportionally taller than the standard Grappler for smooth, predictable lean transitions. Purpose-built for Enduro, DH, and E-MTB. The Flux GR Radial casing features radial ply construction, allowing the tread and sidewall to flex independently. This means straighter tracking under braking, better conformity to rough terrain, and less fatigue over long stages. 72 TPI dual-ply construction with Dual Apex sidewall inserts maintains stability under hard cornering loads while preserving radial compliance. Key Features of the Grappler RS Radial MTB Tire: Rear-specific tread with taller center knobs and steeper ramp angles Radial ply construction for improved braking performance and bump absorption 72 TPI dual-ply Flux GR Radial casing with Dual Apex inserts 27.5" x 2.4" Tubeless ready Available in two compounds: MoPo — A pure 42a single compound built for maximum grip. Soft durometer and slow rebound deliver the highest possible rear-wheel traction under braking and through corners. Momentum — A dual compound balancing grip, rolling efficiency, and tread life. Center lugs use a firmer 50a durometer for speed and durability; shoulder lugs use 42a MoPo rubber to keep cornering confidence high. Ideal for riders who want to move fast on the pedal and grip hard in the turns.