81-4    8-5/8" p36 sloted -99 Ø50

Chrome plated brass body

Knucklehead styled plugs

48-64 Panhead

Fits most H-D models with the head breathing system

KPMI, CUSTOM VALVE GUIDE SEALS. PTFE Mikuni 81-4 8-5/8" p36 sloted -99Solid PTFE, with metal band and choker spring. Stem diameter: 5 16" (0,311"), valve guide diameter: 0,530"; over all length of seal: 0,506"; outside diameter of seal: 0,632". Kibblewhite Precision Machining custom valve stem seals are a quality product and suitable for any and all custom application. Note: Below mentioned valve stem diameters are for reference only. 36 84 B. T. = 3 8" (. 3750") 57 83 XL intake = 0. 3090" 57 83 XL exhaust = 0. 3384" 84