S&S, cylinder head/base & exhaust gasket kit. 4" bore - 99-17 Twin Cam with 4" bore cylinders (NU) 506133 Chrome plated springs are calibrated

Chrome plated springs are calibrated for the lower ride height and provide progressively firmer action which is required for the shorter fork travel

Direct replacement for the stock sprocket/pulley cover

Oil Pressure Gauge MountChrome mount attaches at the crankcase and rocker box mounting bolt

88-95 XL(NU)

The outer layers are embossed and both sides coated with a 250°C resitant polymer rubber layer

S&S, cylinder head/base & exhaust gasket kit. 4" bore - 99-17 Twin Cam with 4" bore cylinders (NU) 506133 Chrome plated springs are calibratedKit includes cylinder head gaskets, cylinder base base & exhaust gaskets. Compatible with OEM 110" CVO Twin Cam and other custom 4" bore engines. Note: Rocker cover gaskets are not included.