RockShox Monarch XX Rear shock 200x51 Shaft Eyelet: Standard Body Eyelet: Standard MReb/MComp 430 LockoutLightweight XC All Mountain racing oriented rear air shock: 275g XX: XLoc hydraulic actuated handlebar remote control lockout 430lb lockout force Solo Air spring system: single Schrader valve, dual chamber air spring with self regulating negative pressure Forged aluminum air can plus a hard anodized, 28mm aluminum body shaft with sag gradients and a 9mm aluminum internal damper shaft Oil damping system with dual flow rebound and a hydraulic remote