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K&N RK-3940 Intake System-Yamaha

Custom Assemblies / Intake System-Yamaha
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RK-3940
$173.99 USD
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Product Overview

  • Designed for Yamaha XVS950 motorcycles
  • Increase horsepower and torque
  • Easy to install
  • Hand made in the USA
  • Backed by K&N warranty
The K&N RK-3940 Intake System-Yamaha fits some Yamaha XVS950 Bolt, Yamaha XVS950 Bolt C-Spec, and Yamaha XVS950 Bolt R-Spec models. See vehicle applications link for details.
The K&N RK-3940 High-Flow Air Intake System increases engine intake airflow and delivering more horsepower & torque to specific Yamaha XVS950 model motorcycles. The intake system increases power by eliminating the stock OE air cleaner and replacing it with a complete High-Flow Air Intake System. The sturdy, custom aluminum backing plate mounts directly to the throttle body via an aluminum integrated, internal-run breather system. The intake system comes with a K&N Air Filter for high air flow and long service intervals. The K&N High-Flow Air Filter is washable, reusable, pre-oiled and ready for installation.

[RK Series Street Metal High Flow Air Intakes for Metric Cruisers]
Estimated Horsepower Gain7.14 HP @ 5313 RPM
Replacement FilterE-3982
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.188 in (56 mm)
CARB EO NumberD-269-59
Street Legal In All US StatesYes
TUV Approved (Europe)No
Inlet Diameter1.688 in (43 mm)
Overall Height2.75 in (70 mm)
Top StyleMetal
Top MaterialBlack Powder Coated
Clamps Included2
Clamp StyleRegular
Clamp MaterialStainless Steel
Weight4.1 lb (1.8 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
Mounting Hardware IncludedYes
Horsepower gains based on similar vehicle dynamometer test. Results will vary.
WARNING: Cancer and reproductive harm--www.P65warnings.ca.gov

K&N RK-3940 Intake System-Yamaha Product Reviews

Monday, October 1, 2018 - Part RK-3940
Also ordered a a Dry Charger, E-3495PK. Not listed on the website as a fit for the Yamaha RK-3940 Intake System, but it was a perfect fit. This setup combined with the Two Brothers Performance Exhaust and the EJK Fuel Controller has made a significant increase in horsepower and torque. Couldn't be happier with the products from K&N. Customer for life.

Thomas Slayback
Bloomington, Illinois
Wednesday, July 11, 2018 - Part RK-3940
Absolutely love it. You can feel a considerable gain in throttle response and overall power through the curve, not to mention that wonderful sound it produces. Not sure if it helped with fuel economy because of not being able to stay off the throttle. Overall easy install with straight forward instructions. Beautiful look as well, way better then the stock plastic intake.

Tyler Lazear
HOWARD, Ohio
Monday, March 5, 2018 - Part RK-3940
Excellent product really woken my bike up. Product was delivered on time and would recommend K&N Filters.

Colin Pitchford
Pool Quay, Welshpool, United Kingdom