Jims Rocker Arms And Shafts

5 products — part of all Rocker Arms And Shafts

Jims rocker arms and shafts for Harley-Davidson provide precision-machined assemblies that actuate the intake and exhaust valves in your overhead-valve V-twin engine. Rocker arm condition directly determines valve timing accuracy — worn shaft bores allow the rocker body to move laterally, introducing timing imprecision, increased oil consumption past the shaft seals and the characteristic top-end tick that signals rocker arm wear on high-mileage Harley-Davidson Big Twins and Sportsters. Jims engineers their Harley-Davidson rocker arm and shaft sets to tighter dimensional specifications than OEM, with shaft surface hardness that resists galling and prolongs bushing life. Complete shaft sets, individual arms and full rocker box kits are available for Evolution, Twin Cam and Shovelhead engine builds. Iron City Motorcycles, your authorised Harley-Davidson dealer in Leeds, stocks Jims rocker arms and shafts. Browse the full Jims Rocker Arms And Shafts range below.