Precision-Tuned Slow Adjusting Screw for PWK/NSR/PWL/PE Carburetors

High-grade brass construction ensures smooth, corrosion-resistant performance for precise air-fuel mixture control. CNC-machined threads guarantee consistent tuning accuracy even under extreme vibration.

Engineered for PWK, NSR, PWL, and PE carburetor models with reverse-thread compatibility. Anodized aluminum knob provides tactile grip for fingertip adjustments during dyno tuning or track-side modifications.

Direct replacement part restores factory-spec idle response in dirt bikes, street motorcycles, and performance ATVs. Micro-polished tip creates perfect seal against carburetor seat to prevent vacuum leaks.

Optimized for 2-stroke engine applications where low-RPM throttle response is critical. Mirror-finished surface reduces fuel residue buildup for long-term reliability in motocross, enduro, and cafe racer builds.

Includes integrated O-ring groove for positive seal. Weight-balanced design prevents spontaneous rotation at high RPM. Made to OEM dimensions with ±0.01mm tolerance for drop-in installation.