Evo Sportster rocker cover set (1 cyl.). Black - 91-03 XL; 86-90 XL crankvented models when umbrella valve is nut used (NU)) 978358 Replacement needle to adjust the

Replacement needle to adjust the mid-range on Keihin CV carburetors

A PTFE inner tubing with a protective stainless steel braid cover with preinstalled fitting for the specific model and model year

USA manufactured with adjustable throttle boss end cap

as is stock with Evolution motors

100dB (+- 5dB)

Evo Sportster rocker cover set (1 cyl.). Black - 91-03 XL; 86-90 XL crankvented models when umbrella valve is nut used (NU)) 978358 Replacement needle to adjust theBlack finish. OEM style rocker covers. Complete set for one cylinder head. Includes gaskets. Hardware is not included. Note: Rocker cover sets are for for late head vented models. Will fit early 86 90 crankcase vented Sportster models when the umbrella valve is not used.