4th Mainshaft Gear. Fits 5Spd Big Twin 1984-2006. - Andrews Products Speedo Drives+Sensors+Cables They will also increase the

They will also increase the oil pressure by using a precision machined pressure relief valve which is seated and sealed to a minimum of 30 psi with full pop off at 55-65 psi

and poor throttle response

* Specially designed baffle prevents reversion and boosts torque for a smooth power delivery all the way through the RPM range

* Replaces OEM # 8967A

* Fits Sportster 2000-2007

4th Mainshaft Gear. Fits 5Spd Big Twin 1984-2006. - Andrews Products Speedo Drives+Sensors+Cables They will also increase theFeatures & Benefits: * Made from high nickel alloy, heat treated & shot peened to give maximum durability and strength. * Lead in ramps machined into most gears, improve shifting & reduce wear on drive dogs & slots. Tech Tips: * Due to Factory HD changes in Gear Teeth pitch over the years , Gears must be changed in pairs ie Mainshaft with matching Counter shaft gear.