KPMI, exhaust valve guide. C630. STD - 79-84 80" (1340cc) Shovelhead (NU) 989045 1-3/4" to 1-7/8"

1-3/4" to 1-7/8"

available in different thicknesses for a custom fit

4" straight-style performance muffler body with 2-1/2" x 16-1/2" baffle and black billet end cap with contrasting machined flutes

This system is a way to vent the oil tank to help reduce pressure build-up and reduce power robbing pressures and stops dipstick blow-out

elasticized cuff and waist

KPMI, exhaust valve guide. C630. STD - 79-84 80" (1340cc) Shovelhead (NU) 989045 1-3/4" to 1-7/8"C630 bearing bronze. Standard size: 0. 6250" O. D. (15. 88mm); 0. 3745" ID (9. 51mm); 1. 91" OAL (48. 51mm). C630 bearing bronze is a tough nickel aluminum bronze alloy typically used in high performance and racing applications where rapid heat transfer from the valve to head is important.