Engine Valve Shim Kit, 29mm Diameter. Contains 20 pieces: 2 Each 2.3/2.4/2.5/2.55/2.6/2.7/2.8/2.9/3.0/3.1

Rocker Arm Shaft. Sold Each. 4 Used Per Engine. Replaces OEM 256-12156-01-00

High Performance Kibblewhite Black Diamond Intake Valve. Made in the USA by Kibblewhite who have been making High Quality Performance parts for 75+ years. All Black Diamond Stainless steel valves are impregnated by a special German process to a depth of .002, with a surface build up of .0002. This Black Diamond process improves wear properties, reduces friction, and provides resistance to corrosion and wear that is superior to chrome and nickel electrolysis plating. Each valve is designed using Finite Element Analysis software, and profiles are tested on our computerized flow bench. Black Diamond Valves are lightweight, strong, one piece forgings with profiles that provide excellent flow characteristics. Fits: Yamaha XS650 (1970-83) Sold Each, Order the Quantity you Require

High Performance Kibblewhite Black Diamond Exhaust Valve. Made in the USA by Kibblewhite who have been making High Quality Performance parts for 75+ years. All Black Diamond Stainless steel valves are impregnated by a special German process to a depth of .002, with a surface build up of .0002. This Black Diamond process improves wear properties, reduces friction, and provides resistance to corrosion and wear that is superior to chrome and nickel electrolysis plating. Each valve is designed using Finite Element Analysis software, and profiles are tested on our computerized flow bench. Black Diamond Valves are lightweight, strong, one piece forgings with profiles that provide excellent flow characteristics. Fits: Yamaha XS650 (1970-83) Sold Each, Order the Quantity you Require

High Performance Kibblewhite Intake Valve Guide (Standard Size). Made in the USA by Kibblewhite who have been making High Quality Performance parts for 75+ years. Kibblewhite uses the copper based C63000 nickel-aluminum bronze as a material to make these bronze valve guides because of its ideal characteristics for the application. The 5% nickel content provides superior resistance to wear, and the approximately 80 percent copper content delivers outstanding heat conductivity. Kibblewhite guide profiles are designed to have minimal effect on the airstream while maintaining critical cross sectional thickness in high temperature areas, which promotes high performance and endurance. Fits: Yamaha XS650 (1970-83) Sold Each, Order the Quantity you Require

High Performance Kibblewhite Exhaust Valve Guide (Standard Size). Made in the USA by Kibblewhite who have been making High Quality Performance parts for 75+ years. Kibblewhite uses the copper based C63000 nickel-aluminum bronze as a material to make these bronze valve guides because of its ideal characteristics for the application. The 5% nickel content provides superior resistance to wear, and the approximately 80 percent copper content delivers outstanding heat conductivity. Kibblewhite guide profiles are designed to have minimal effect on the airstream while maintaining critical cross sectional thickness in high temperature areas, which promotes high performance and endurance. Fits: Yamaha XS650 (1970-83) Sold Each, Order the Quantity you Require

Valve Guide O-Ring 14.5mm x 1.5mm. Equivalent to OEM: 93210-15151-00. Sold each.