Non-hydraulic tappet that is not adjustable, must these therefore be used with an adjustable type pushrod. Tappet weight 109 grams each. Used in applications where a hydraulic tappet is not desired. Note: See 978134 + .002" and 978135 +. 005" for identical but oversized tappets. / Fitment: 84-99 Big Twin; 86-90 XL Sportster; 87-90 Buell (NU)