Experience a comfortable and confidence-inspiring ride - no matter the pavement conditions - with Harley-Davidson® Premium Ride Emulsion Shocks. These fast acting mono-tube nitrogen gas-charged shocks offer enhanced compression and rebound damping control when compared to typical twin-tube shock absorbers. The nitrogen gas charged shocks resist oil aeration and work with the internal valve stack to provide superior damping control in the twisties. The large 36mm pistons and low viscosity high-performance oil allow these shocks to react quickly to impacts and keep the tires tracking the road surface. You get a controlled ride and minimized bottoming harshness transmitted through the frame. The locking threaded adjustment lets you fine tune the spring preload to your current riding conditions - whether a solo run on the back roads or a fully-loaded two-up freeway tour - and urethane bumpers provide a softer feel if the shock bottoms under load. The beautifully-finished shocks feature black-anodized billet top caps and black progressively-wound springs. Kit includes left and right shock and preload adjustment spanner wrench.