Coming from Pro-Line and made for many popular crawler vehicles are the new big bore scale shock absorbers. The large, nearly 11mm, bore allows the big bore shocks to function correctly as true performance shocks due to the larger oil volume in the shock body. The shocks feature CNC machined aluminium shock caps, collars, bodies,bottom caps, and hard chrome coated steel shock shafts all made to exacting tolerances. X-ring seals are used as the main shaft seal for smooth, low friction action and to prevent leaks. The shocks are meant to stand out from the crowd with chrome and black anodising and a large P-L logo engraved into the shock cap that will look good on any rig. Pro-Line also engineered an all-new dual-rate spring design made from a single spring that saves space and has incredible scale looks and performance. Optional softer and firmer dual-rate springs are available. The lower spring perch is captured, so drivers always know it will stay where it belongs during your adventures. From the top mounting hole to the bottom mounting hole, these Big Bore Scaler Shocks measure out to be 90mm at full extended length and collapse down to about 64mm – when the rubber bump stop is removed – and they include extra 5mm longer shock ends to increase the shock length. Just like Pro-Line’s Pro-Spec scaler shocks, the big bores come mostly pre-built – without oil – and are designed to fit many popular crawler vehicles.