Keihin carburetors have long been considered some of the finest carburetors in the world.  Used by top race teams around the world, the FCR series is the result of decades of roadracing experience and technology improvement.  The FCR carburetors have proven to be some of the most reliable and powerful carburetors available, they include the following features:

• Smooth bore design provides maximum airflow
• Flat slide with vacuum release plate for improved flow control
• Throttle valve roller slide design for smooth operation
• Progressive linkage for precise control
• Equipped with accelerator pump for rapid acceleration with no flat spots
• Designed for easy installation on most models
• Thumb throttle is retainable, please inquire for cable options
• TPS available on some models, please inquire

This Keihin FCR 35mm carburetor kit is easy bolt-on horsepower for all Yamaha YFM660 Raptor ATV's.  Both 35mm and 39mm carburetor kits are available.  The 35mm kits are well suited for trail riding and provide good torque gains at lower RPM's while the 39mm kits are well suited for modified engines with higher outputs.  They will give more horsepower at higher RPM's.  ALL of the following components are included for a simple installation:

• Two Keihin FCR pre-jetted flat slide carburetors, FCR35 or FCR39
  
• Motion Pro push/pull throttle cable set
• Motion Pro push/pull throttle pipe
• We have special cable options that allow the retention of the stock thumb throttle.  Please inquire for options.
• Extra horsepower is always included!

The stock exhaust and some aftermarket exhaust systems may interfere with the accelerator pump chamber.  Retains the stock air box.

This kit is suited for stock to mildly modified motors and will come pre-jetted for immediate bolt on installation.  Some fine tuning may be required to attain the desired combination of performance, fuel mileage, and drivability.  Extra main jets are included for fine tuning and additional genuine Keihin parts and accessories are always available at low prices.  Alternatively kits can be built utilizing your own jetting specifications. Please ask us how.

Keihin and Mikuni carburetor kits are available for just about any application, from custom to OEM. Contact us for applications and availability.

Please feel free to contact us with any additional questions or requests, we are available by direct line, IM, or email. We are available for tuning and setup questions as well as continuing product support after the sale.