The Keihin PWM 38mm Throttle Slide valve is available from sharkshifter for many engine applications. Standard Throttle Valve is a 6.0mm Cutaway. For the 2001 CR 125 Stock Moto application, we will use both the 5.0 slide and the 6.0 for fine tuning the carburetion on initial throttle.
PWM Throttle Valve Chart
From Rich to Lean (Controls Air, not fuel)
5.0 - 2001 Engine Recommended
6.0 - Standard
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