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Your motorcycle front fork has a thick metal disc with machined passages flowing between both flat sides, this is referred to as the piston or valve. Stacked on one or both sides of this piston are the valving shims, and the check plates or shims to only allow the oil to flow through the piston and make the shims deflect in one direction, a complex collection of thin steel washers that flex when pushed by oil pressure. Your motorbike's internal valve shims come in a huge range of diameters & thicknesses, with the comp stack on one side & reb on the other, and are arranged in a very specific order to create the right damping characteristics. The piston and its shim stacks are then attached to the end of the shock shaft using a locknut. To make sure the suspension fluid can only flow through the correct holes, rubber o-rings and a teflon coated bush or a soft PTFE band seal around the outer diameter. We also sell complete shock pistons with the seals already installed. For shim matching and tuning reference our shim equivalence calculator, read suspension mods for your budget or watch Teknik's rebuild video revalve a shock.
Consider matching your shim selection with Suspension Tools for accurate assembly and measurement.
Browse our range of check washers and shims to restore or tune fork damping.
Your motorcycle front fork has a thick metal disc with machined passages flowing between both flat sides, this is referred to as the piston or valve. Stacked on one or both sides of this piston are the valving shims, and the check plates or shims to only allow the oil to flow through the piston and make the shims deflect in one direction, a complex collection of thin steel washers that flex when pushed by oil pressure. Your motorbike's internal valve shims come in a huge range of diameters & thicknesses, with the comp stack on one side & reb on the other, and are arranged in a very specific order to create the right damping characteristics. The piston and its shim stacks are then attached to the end of the shock shaft using a locknut. To make sure the suspension fluid can only flow through the correct holes, rubber o-rings and a teflon coated bush or a soft PTFE band seal around the outer diameter. We also sell complete shock pistons with the seals already installed. For shim matching and tuning reference our shim equivalence calculator, read suspension mods for your budget or watch Teknik's rebuild video revalve a shock.
Consider matching your shim selection with Suspension Tools for accurate assembly and measurement.
Browse our range of check washers and shims to restore or tune fork damping.
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