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K&N RK-3940 Intake System-Yamaha

Custom Assemblies > Intake System-Yamaha
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 out of 5 stars   8 Customer Reviews
  • 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]

Product Specifications

Estimated Horsepower Gain7.14 HP @ 5313 RPM
Replacement FilterE-3982
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Product StyleMotorcycle Intake System
Air Filter ShapeUnique
Air Filter Height2.188 in (56 mm)
Air Filter Outlet ShapeNot Flanged
CARB EO NumberD-269-50
Street Legal In All US StatesSee Application Link Above
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
Neck Flange1.688 in (43 mm)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

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

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
Monday, November 6, 2017 - Part RK-3940
I'm impressed of the quality, precision and beauty of the product. Very professional approach of the sellers, really fast delivery.

Goran Kezele
Rijeka, Croatia
Monday, October 2, 2017 - Part RK-3940
Very good product and fast shipping.

Patrick Bedard
Trois-Rivières, Canada
Saturday, June 24, 2017 - Part RK-3940
Very quick sending to Portugal. Easy to install.

Diogo Ribeiro
Torres Vedras, Portugal
Wednesday, June 14, 2017 - Part RK-3940
I've used many K&N filters over the years and I've always been satisfied with the quality and price savings vs OEM filters. This particular filter it absolutely outstanding. It looks much better than the OEM and is a bit smaller altogether, although the filter itself it MUCH larger than the OEM filter which is surrounded by a huge body. Best part is the intake sound which I think is superb. Not real loud but throaty. It's just a great add-on for the Yamaha Bolt.

Donald Storing
Gaylord, Michigan
Monday, May 15, 2017 - Part RK-3940
All I have to say is Outstanding! The fit, the look, the sound and the quality of the product is great. Installation was very easy and explained well in the instructions.

Jim Gardner
Piedmont, Oklahoma
Monday, February 27, 2017 - Part RK-3940
Put this on along with a power commander and a vance and hines slip on pipe followed by a tune on the dyno. Huge difference. I picked up about 10 hp and about 18 lbs of torque, plus it looks awesome.

William C Kennedy
Snohomish, Washington