These tappet covers are approx

OEM reproduction of the small threaded pushbutton style brake light switch

advance curves and rev-limiter in 5750

Solid brass internals with vibration damping glycerin for the ultimate in accuracy

Complete set to fit left and right side of rocker boxes

FLANGE, EXHAUST PIPE 04-17 THICK STYLE. RAW Touring These tappet covers are approxRaw aluminum. 04 17 thick style. Used to mount exhaust to cylinder head. Note: Exhaust retaining rings are required for installation. These must be ordered separately. Note: The thinner 84 03 17 22 'Early Style' steel and the thicker 04 17 'Late Style' aluminum exhaust flanges are interchangeable. Late Style flanges are thicker and designed to help prevent bending of the exhaust flange. All will fit all 84 up Big Twin and 86 up XL Sportster models.