Keihin Carburetor

The air screw on a Keihin carburetor adjusts the air in the air-fuel mixture at low throttle settings. It affects idle and low-speed performance primarily by fine-tuning the air-fuel ratio. This change helps. It ensures a smooth idle and better throttle response. It also prevents stalling and backfiring.

No, Keihin and Mikuni are not the same. They are two companies. They make carburetors and fuel system parts for motorcycles, ATVs, and small engines. Both brands are well-known and respected in the industry. But they have distinct designs, technologies, and tuning.

Both brands have a great reputation and produce high-quality carburetors.
The Keihin is for racing and high performance. It is best for peak performance.
The Mikuni is favored for its versatility and ease of use while being easier to adjust.

High-Performance/Racing: FCR, CR Special
Off-Road/Two-Stroke: PWK, PWM, PE
General-Purpose/Street: CVK, PD
Utility/Compact Engines: PJ, PZ

A Keihin carburetor is a fuel system part made by Keihin Corporation. It is a Japanese company. It is known for its high-quality carburetors, fuel injectors, and fuel management systems. Keihin carburetors control the air-fuel mixture entering the engine. This optimizes combustion for better performance, fuel efficiency, and throttle response. They are widely used in motorcycles, ATVs, and scooters. They are popular with major manufacturers, like Honda and KTM, for OEM and aftermarket use.