With Standard Duty springs. With the Fox QSR 3-position Quick Switch Rebound adjustment. The internal floating piston (IFP) will effectively separate the nitrogen gas from the shock oil. Oil without gas keeps the damping as designed by the Fox engineers; even when the shock is worked over a longer period. This main piston valving has been reconfigured and extensively ride tested in a full range of conditions to work in harmony with the new three-position Quick Switch Rebound (QSR) settings; making it easy make it easy to dial in one of the knob-adjustable three rebound settings for different riding situations. - 1 Soft rebound: for comfort on bumpy backroads - 2 Medium rebound: For ''any road''; a balance of control and comfort - 3 Hard rebound: For a ''glued to the asphalt'' feeling on smooth twisty roads - Linear spring rate - Adjustable preload with setting guide marks- Top mount eyelet - Bottom mount eyelet- 3.31" travel - 14.06" extended length - 10.75" compressed length - Gas-charged mono-tube with internal floating piston (IFP) - 1.5-inch diameter 6061-T6 aluminum type III hard-anodized body - Fully rebuildable and re-valvable - Advanced high-flow; deflective disc velocity-sensitive damping - 5/8-inch diameter; low friction; super-finished hard chrome shaft - Matte black spring and black anodized preload ring- Standard spring rate; for riders up to 240lb (109kg). Note: Standard Duty or Heavy Duty springs?This has nothing to do with quality but everythin