Description
While the pilot jet handles your idle, the Main Jet is the undisputed king of top-end performance. Controlling fuel delivery from 75% to 100% (wide-open) throttle, a correctly sized main jet is the difference between an engine that screams to the redline and one that “leans out” and risks catastrophic damage. The #122 PWK Main Jet is a popular choice for mid-to-high performance builds looking for that perfect air-fuel ratio at peak RPMs.
Why the #122 Main Jet is a Tuning Powerhouse:
Surgical High-Speed Fueling: Machined to exacting internal flow tolerances, the #122 orifice ensures a consistent, high-volume fuel spray that keeps your engine fed when it’s under maximum load.
Prevents High-RPM Lean-Out: Running lean at wide-open throttle (WOT) can cause extreme heat, leading to melted pistons or seized rings. Moving to a #122 provides the necessary fuel “cushion” to keep combustion temperatures safe.
Maximum Top-End Pull: If your bike feels like it’s “holding back” or flatlining at high speeds, it’s often starving for fuel. The 122 allows your engine to breathe fully and reach its true top-speed potential.
Designed for PWK Carburetors: Specifically engineered for the high-flow architecture of PWK, OKO, and Keihin-style performance carburetors, ensuring perfect thread fit and flow characteristics.
Corrosion-Resistant Brass: Crafted from premium solid brass to resist the abrasive effects of modern fuels, ensuring your high-speed tuning remains consistent over time.
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