EVO TAPP Primary Clutch Standard Weight Kit blow-off-valve The 4 bar fuel pressure

The 4 bar fuel pressure regulator provides the same base fuel pressure as stock

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XR Optic Hard Coating: So you heard “polycarbonate” and now you’re afraid of scratches

Installs in minutes using existing hardware

EVO TAPP Primary Clutch Standard Weight Kit blow-off-valve The 4 bar fuel pressureEVO TAPP Primary Clutch Standard Weight Kit The weight in the arms of a TAPP primary can be adjusted in two ways: set screws in the arms, and washers on the roller thru bolt. Your clutch was shipped with a basic tuning kit. As with all other clutches, add weight to lower RPM, remove weight to raise RPM. Set screws in the arms affect the low speed shift points more than the high speed and will reduce the max RPM. Weight on the roller axle bolt acts