Compression Adjuster Circuit Major components of the compression adjustment circuit are the slow bleed orifice, piston and shim cage. All these components work in conjunction to achieve the low and high speed compression on the race coilover. At low speed compression, the damper fluid is monitored through the slow bleed orifice in which pressure loss across the orifice results in opposing damping force. During high speed compression where the damping fluid travels at higher velocity, the slow bleed orifice creates too much resistance for the fluid. The extra force generated from the high speed fluid is handled by the piston and shim cage while still monitored by the slow-bleed orifice. The piston and shim cage virtually bypass the orifice during high- speed compression.
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