Motorcycle Shock Damping Piston Parts

Shock Piston Parts

Your rear shock absorber uses a machined metal piston with passages sealed by a rubber o-ring and a teflon coated bush (or a soft PTFE band) around the outer diameter to control fluid flow and damping.

Precision valving and rebuild components for rear shock pistons

• Accurate sealing with o-rings, bushing rings or gapless PTFE bands
• Shim stacks in many diameters and thicknesses for compression and rebound tuning
• Pre-assembled piston assemblies ready for rebuild or replacement
• Individual items such as lock nuts, valve stop washers and valving shims

Recommended Pairings

Consider matching your piston parts with Suspension Tools for accurate assembly and measurement.

When the damper moves oil through the piston the valving shims flex to create damping behaviour; experienced tuners test and refine this on a suspension dyno. Our shim equivalence calculator can help, and you can read suspension mods for your budget or watch Teknik's Nick rebuild and revalve a shock. We sell piston assemblies with o-rings & bushing rings or gapless bands already installed, plus individual parts; for other valving components see our Valving Shims section.

Shop Shock Piston Parts

Browse piston assemblies, seals and rebuild parts for accurate shock performance and tuning.