Valve Guides Manganese Bronze, Standard Size, Intake and Exhaust. Guides require reaming to final size for valves. Sold individually. Replacements for OEM # E2899, 70-2899, E2900, 70-2900, E3827, 70-3827, E3828, 70-3828, 71-3294, 71-3295 Kibblewhite produces world-class components here in the USA which are found on everything from vintage street bikes to Larry 'Spiderman' McBride's Top Fuel World Champion drag bike and Alp Sungurtekin's world-recording holding 175mph 650cc Triumph land speed racer. In Kibblewhite's own words:

Manganese Bronze: These Engine Builder valve guides have been designed with the price conscious builder in mind. Expect the same exacting KPMI® tolerances, but with a reduced toughness / wear-ability when compared to premium C630 Nickel Aluminum Bronze valve guides. The softer Manganese guides are easily reamed, and then can be delicately finished with our high quality ball hones. Now, with any battery operated or electric drill you can ream and hone manganese valve guides in less time and in the absence of expensive honing equipment required to properly size tough Nickel Bronze guides.

Fitment:
Triumph 500 & 650 1951-1962
Triumph 650 & 750 1963-1983