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2001 Harley Davidson FXSTSI Springer Softail F/I 88 CI

57-1125 K&N Performance Air Intake System
Except Lower Fairings
$280.99USD
In Stock / Free Shipping
Overview
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Aluminum tube with high quality black finish
  • Washable and reusable lifetime air filter
  • Street legal in all 50 states
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 90 minutes or less
  • K&N Million Mile Limited Warranty
Detailed Info
Estimated Horsepower Gain7.78 HP @ 4953 RPM
Replacement FilterRE-0960
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height6 in (152 mm)
Air Filter Outlet ShapeRound
Intake Pipe Color / FinishBlack
Intake Pipe MaterialAluminum
CARB EO NumberD-269-55
Street Legal In All US StatesYes
TUV Approved (Europe)No
Clamps Included2
Clamp StyleWorm Gear
Clamp MaterialStainless Steel
Weight3 lb (1.4 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
Couplers IncludedNone
Mounting Hardware IncludedYes
Reviews

DIY Level

Advanced Moderate Easy

Tools Needed

Wrench, Extension, Flat Blade Screwdriver, Allen Wrench

Installation Time

60-90 Minutes

57-1125P K&N Performance Air Intake System
Except Lower Fairings
$301.99USD
In Stock / Free Shipping
Overview
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Aluminum tube with high quality chrome finish
  • Washable and reusable lifetime air filter
  • Street legal in all 50 states
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 90 minutes or less
  • K&N Million Mile Limited Warranty
Detailed Info
Estimated Horsepower Gain7.78 HP @ 4953 RPM
Replacement FilterRC-3680
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height6 in (152 mm)
Air Filter Outlet ShapeRound
Intake Pipe Color / FinishBright Aluminized Metal
Intake Pipe MaterialAluminum
CARB EO NumberD-269-55
Street Legal In All US StatesYes
TUV Approved (Europe)No
Clamps Included2
Clamp StyleWorm Gear
Clamp MaterialStainless Steel
Weight3 lb (1.4 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
Couplers IncludedNone
Mounting Hardware IncludedYes
Reviews

DIY Level

Advanced Moderate Easy

Tools Needed

Wrench, Extension, Flat Blade Screwdriver, Allen Wrench

Installation Time

60-90 Minutes

57-1137 K&N Performance Air Intake System
Except Lower Fairings
$234.99USD
In Stock / Free Shipping
Overview
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Cast aluminum high-performance intake tube
  • Washable and reusable K&N High-Flow cotton air filter that provides outstanding performance and protection
  • Integrated internal velocity stack
  • Built-in breathers replace external OE breathers
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 90 minutes or less
Detailed Info
Estimated Horsepower Gain5.35 HP @ 4758 RPM
Replacement FilterRE-5286
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height5.25 in (133 mm)
Air Filter Outlet ShapeRound
Intake Pipe Color / FinishBlack
Intake Pipe MaterialDie-Cast Aluminum
CARB EO NumberD-269-59
Street Legal In All US StatesYes
TUV Approved (Europe)No
Clamps Included1
Clamp StyleRegular
Clamp MaterialStainless Steel
Weight4.2 lb (1.9 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
Couplers IncludedNot Required
Mounting Hardware IncludedYes
Reviews

DIY Level

Advanced Moderate Easy

Tools Needed

Wrench, Extension, Flat Blade Screwdriver, Allen Wrench

Installation Time

60-90 Minutes

57-1137S K&N Performance Air Intake System
Except Lower Fairings
$232.99USD
In Stock / Free Shipping
Overview
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Cast aluminum high-performance intake tube
  • Washable and reusable K&N High-Flow cotton air filter that provides outstanding performance and protection
  • Integrated internal velocity stack
  • Built-in breathers replace external OE breathers
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 90 minutes or less
Detailed Info
Estimated Horsepower Gain5.35 HP @ 4758 RPM
Replacement FilterRE-5287
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height5.25 in (133 mm)
Air Filter Outlet ShapeRound
Intake Pipe Color / FinishSilver
Intake Pipe MaterialDie-Cast Aluminum
CARB EO NumberD-269-59
Street Legal In All US StatesYes
TUV Approved (Europe)No
Clamps Included1
Clamp StyleRegular
Clamp MaterialStainless Steel
Weight4.2 lb (1.9 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
Couplers IncludedNot Required
Mounting Hardware IncludedYes
Reviews

DIY Level

Advanced Moderate Easy

Tools Needed

Wrench, Extension, Flat Blade Screwdriver, Allen Wrench

Installation Time

60-90 Minutes

63-1125 K&N Performance Air Intake System
Except Lower Fairings
$287.99USD
In Stock / Free Shipping
Rating:
100% of 100
Overview
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Aluminum tube with high quality black finish
  • Washable and reusable lifetime air filter
  • Not legal for sale or use in California
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 90 minutes or less
  • K&N Million Mile Limited Warranty
Detailed Info
Estimated Horsepower Gain7.78 HP @ 4953 RPM
Replacement FilterRE-0960
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height6 in (152 mm)
Air Filter Outlet ShapeRound
Intake Pipe Color / FinishBlack
Intake Pipe MaterialAluminum
Street Legal In All US States No
TUV Approved (Europe)No
Clamps Included2
Clamp StyleRegular
Clamp MaterialStainless Steel
Weight3 lb (1.4 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
California RestrictedNot legal for sale or use in California
Couplers IncludedNone
Mounting Hardware IncludedYes
Reviews
Rating:
100% of 100

DIY Level

Advanced Moderate Easy

Tools Needed

Wrench, Extension, Flat Blade Screwdriver, Allen Wrench

Installation Time

60-90 Minutes

63-1125P K&N Performance Air Intake System
Except Lower Fairings
$301.99USD
In Stock / Free Shipping
Rating:
96% of 100
Overview
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Aluminum tube with high quality finish
  • Washable and reusable lifetime air filter
  • Not legal for sale or use in California
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 90 minutes or less
  • K&N Million Mile Limited Warranty
Detailed Info
Estimated Horsepower Gain7.78 HP @ 4953 RPM
Replacement FilterRC-3680
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height6 in (152 mm)
Air Filter Outlet ShapeRound
Alternate Replacement FilterRE-0960
Intake Pipe Color / FinishBright Aluminized Metal
Intake Pipe MaterialAluminum
Street Legal In All US States No
TUV Approved (Europe)No
Clamps Included2
Clamp StyleRegular
Clamp MaterialStainless Steel
Weight3 lb (1.4 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
California RestrictedNot legal for sale or use in California
Couplers IncludedNone
Mounting Hardware IncludedYes
Reviews
Rating:
96% of 100

DIY Level

Advanced Moderate Easy

Tools Needed

Wrench, Extension, Flat Blade Screwdriver, Allen Wrench

Installation Time

60-90 Minutes

63-1137 K&N Performance Air Intake System
Except Lower Fairings
$349.43USD
In Stock / Free Shipping
Overview
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Cast aluminum high-performance intake tube
  • Washable and reusable K&N High-Flow cotton air filter that provides outstanding performance and protection
  • Integrated internal velocity stack
  • Built-in breathers replace external OE breathers
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 90 minutes or less
Detailed Info
Estimated Horsepower Gain5.35 HP @ 4758 RPM
Replacement FilterRE-5286
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height5.25 in (133 mm)
Air Filter Outlet ShapeRound
Intake Pipe Color / FinishBlack
Intake Pipe MaterialDie-Cast Aluminum
Street Legal In All US States No
TUV Approved (Europe)No
Clamps Included1
Clamp StyleRegular
Clamp MaterialStainless Steel
Weight4.2 lb (1.9 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
California RestrictedNot legal for sale or use in California
Couplers IncludedNone
Mounting Hardware IncludedYes
Reviews

DIY Level

Advanced Moderate Easy

Tools Needed

Wrench, Extension, Flat Blade Screwdriver, Allen Wrench

Installation Time

60-90 Minutes

63-1137S K&N Performance Air Intake System
Except Lower Fairings
$345.99USD
In Stock / Free Shipping
Overview
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Cast aluminum high-performance intake tube
  • Washable and reusable K&N High-Flow cotton air filter that provides outstanding performance and protection
  • Integrated internal velocity stack
  • Built-in breathers replace external OE breathers
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 90 minutes or less
Detailed Info
Estimated Horsepower Gain5.35 HP @ 4758 RPM
Replacement FilterRE-5287
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height5.25 in (133 mm)
Air Filter Outlet ShapeRound
Intake Pipe Color / FinishSilver
Intake Pipe MaterialDie-Cast Aluminum
Street Legal In All US States No
TUV Approved (Europe)No
Clamps Included1
Clamp StyleRegular
Clamp MaterialStainless Steel
Weight4.2 lb (1.9 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
California RestrictedNot legal for sale or use in California
Couplers IncludedNone
Mounting Hardware IncludedYes
Reviews

DIY Level

Advanced Moderate Easy

Tools Needed

Wrench, Extension, Flat Blade Screwdriver, Allen Wrench

Installation Time

60-90 Minutes

HD-1499 K&N Replacement Air Filter
All Models
$68.99USD
Out of Stock / Free Shipping
Rating:
99% of 100
Overview
  • Designed to provide increased horsepower and torque
  • Pleated media provides a large filtration area offering long service intervals
  • Multiple layers of woven cotton gauze media offers excellent filtration
  • Application specific base seal and sealing bead
  • Made in the USA for over 40 years
  • Washable & reusable, pre-oiled and ready to ride!
  • Million-Mile Limited Warranty
Detailed Info
Air Filter ShapeUnique
Height1.625 in (41 mm)
Package Contents1 Air Filter
Package Quantity1
WashableYes
Product StyleUnique Air Filters
Filter MaterialCotton Gauze
FlangesNone
Top StyleMetal
Top MaterialZinc
Weight1.4 lb (0.6 kg)
Filter Re-Oiling Amount0.27 oz (8 ml)
Product Box Height3.63 in (92 mm)
Product Box Length8.5 in (216 mm)
Product Box Width8.5 in (216 mm)
Reviews
Rating:
99% of 100

DIY Level

Advanced Moderate Easy

Tools Typically Needed

Screwdriver

Installation Time

5-10 Minutes

RK-3909-1 K&N Intake System-Harley Davidson
w/1-5/8 inch Tall Filter
$166.99USD
In Stock / Free Shipping
Rating:
100% of 100
Overview
  • Designed to increase horsepower & torque
  • Dyno-tuned velocity stack
  • Washable and reusable
  • Excellent air filtration
Detailed Info
Estimated Horsepower Gain6.05 HP @ 5206 RPM
Replacement FilterE-3972
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Size7 Inch
Air Filter ShapeRound
Air Filter Height1.625 in (41 mm)
Air Filter Inside Diameter6.188 in (157 mm)
Air Filter Outlet ShapeNot Flanged
CARB EO NumberD-269-35/55
Street Legal In All US StatesSee Vehicle Applications
TUV Approved (Europe)No
Inlet Diameter2.25 in (57 mm)
Overall Height1.688 in (43 mm)
Top StyleMetal
Top MaterialBlack Powder Coated
Clamps IncludedNo Clamps Included
Clamp StyleNo Clamps Required
Clamp MaterialNo Clamps Required
Weight3.3 lb (1.5 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
Couplers IncludedNone
Mounting Hardware IncludedYes
Neck Flange2.25 in (57 mm)
StyleOval
Reviews
Rating:
100% of 100

RK-3910-1 K&N Intake System-Harley Davidson
w/2-1/4 inch Tall Filter
$140.99USD
In Stock / Free Shipping
Rating:
100% of 100
Overview
  • Designed to increase horsepower & torque
  • Dyno-tuned velocity stack
  • Washable and reusable
  • Excellent air filtration
Detailed Info
Estimated Horsepower Gain10.76 HP @ 5206 RPM
Replacement FilterE-3980
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Size9 Inch
Air Filter ShapeOval
Air Filter Height2.188 in (56 mm)
Air Filter Outlet ShapeRound
CARB EO NumberD-269-35/55
Street Legal In All US StatesSee Vehicle Applications
TUV Approved (Europe)No
Inlet Diameter2.25 in (57 mm)
Overall Height2.188 in (56 mm)
Top StyleMetal
Top MaterialBlack Powder Coated
Clamps IncludedNo Clamps Included
Clamp StyleNo Clamps Required
Clamp MaterialNo Clamps Required
Weight3.3 lb (1.5 kg)
Product Box Height4.88 in (124 mm)
Product Box Length11.75 in (298 mm)
Product Box Width9.5 in (241 mm)
Couplers IncludedNone
Mounting Hardware IncludedYes
Neck Flange2.25 in (57 mm)
StyleOval
Reviews
Rating:
100% of 100

RK-3932 K&N Intake System-Harley Davidson
All Models
$171.99USD
In Stock / Free Shipping
Rating:
97% of 100
Overview
  • Designed for Harley-Davidson motorcycles
  • Increase horsepower and torque
  • Easy to install
  • Made in USA
  • Backed by K&N warranty
Detailed Info
Estimated Horsepower Gain7.16 HP @ 5206 RPM
Replacement FilterE-3975
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.125 in (54 mm)
CARB EO NumberD-269-55/59
Street Legal In All US StatesYes
TUV Approved (Europe)No
Inlet Diameter3.5 in (89 mm)
Overall Height2.25 in (57 mm)
Top MaterialChrome
Weight4.4 lb (2 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
Reviews
Rating:
97% of 100

RK-3932B K&N Intake System-Harley Davidson
All Models
$211.99USD
In Stock / Free Shipping
Overview
  • Designed for Harley-Davidson motorcycles
  • Increase horsepower and torque
  • Easy to install
  • Made in USA
  • Backed by K&N warranty
Detailed Info
Estimated Horsepower Gain7.16 HP @ 5206 RPM
Replacement FilterE-3986
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.125 in (54 mm)
CARB EO NumberD-269-59
Street Legal In All US StatesSee Vehicle Applications
TUV Approved (Europe)No
Overall Height2.25 in (57 mm)
Top MaterialBlack Powder Coated
Package Contents1 Air Filter
Weight4.4 lb (2 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
Reviews

RK-3932X K&N Intake System-Harley Davidson
All Models
$231.99USD
In Stock / Free Shipping
Overview
  • Designed for Harley-Davidson motorcycles
  • Increase horsepower and torque
  • Extra tall air filter design provides even more air flow and longer service intervals than standard RK-series air intakes
  • Easy to install
  • Made in the U.S.A.
  • Backed by K&N Million Mile Limited Warranty
Detailed Info
Estimated Horsepower Gain7.18 HP @ 4662 RPM
Replacement FilterE-3986
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.125 in (54 mm)
CARB EO NumberD-269-59
Street Legal In All US StatesSee Vehicle Applications
TUV Approved (Europe)No
Overall Height3.25 in (83 mm)
Top MaterialChrome
Package Contents1 Air Filter
Weight4.5 lb (2 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
Reviews

RK-3932XB K&N Intake System-Harley Davidson
All Models
$220.99USD
In Stock / Free Shipping
Overview
  • Designed for Harley-Davidson motorcycles
  • Increase horsepower and torque
  • Extra tall air filter design provides even more air flow and longer service intervals than standard RK-series air intakes
  • Easy to install
  • Made in the U.S.A.
  • Backed by K&N Million Mile Limited Warranty
Detailed Info
Estimated Horsepower Gain7.18 HP @ 4662 RPM
Replacement FilterE-3986
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.125 in (54 mm)
CARB EO NumberD-269-59
Street Legal In All US StatesSee Vehicle Applications
TUV Approved (Europe)No
Overall Height3.25 in (83 mm)
Top MaterialBlack Powder Coated
Package Contents1 Air Filter
Weight4.5 lb (2 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
Reviews

RK-3933 K&N Intake System-Harley Davidson
All Models
$171.99USD
In Stock / Free Shipping
Rating:
100% of 100
Overview
  • Designed for Harley-Davidson motorcycles
  • Increase horsepower and torque
  • Easy to install
  • Made in USA
  • Backed by K&N warranty
Detailed Info
Estimated Horsepower Gain7 HP @ 5204 RPM
Replacement FilterHD-0800
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.125 in (54 mm)
CARB EO NumberD-269-55/59
Street Legal In All US StatesYes
TUV Approved (Europe)No
Inlet Diameter2.281 in (58 mm)
Overall Height2.375 in (60 mm)
Top MaterialChrome
Weight4.2 lb (1.9 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
Reviews
Rating:
100% of 100

RK-3933B K&N Intake System-Harley Davidson
All Models
$243.99USD
In Stock / Free Shipping
Overview
  • Designed for Harley-Davidson motorcycles
  • Increase horsepower and torque
  • Easy to install
  • Made in USA
  • Backed by K&N warranty
Detailed Info
Estimated Horsepower Gain7 HP @ 5204 RPM
Replacement FilterHD-0800
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.125 in (54 mm)
CARB EO NumberD-269-59
Street Legal In All US StatesSee Vehicle Applications
TUV Approved (Europe)No
Inlet Diameter2.281 in (58 mm)
Overall Height2.375 in (60 mm)
Top MaterialAluminum
Weight4.5 lb (2 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
Reviews

RK-3933X K&N Intake System-Harley Davidson
All Models
$255.99USD
In Stock / Free Shipping
Overview
  • Designed for Harley-Davidson motorcycles
  • Increase horsepower and torque
  • Extra tall air filter design provides even more air flow and longer service intervals than standard RK-series air intakes
  • Easy to install
  • Made in the U.S.A.
  • Backed by K&N Million Mile Limited Warranty
Detailed Info
Estimated Horsepower Gain6.5 HP @ 4650 RPM
Replacement FilterE-3984
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height3.125 in (79 mm)
CARB EO NumberD-269-59
Street Legal In All US StatesSee Vehicle Applications
TUV Approved (Europe)No
Overall Height6 in (152 mm)
Top MaterialAluminum
Weight4.5 lb (2 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
Reviews

RK-3933XB K&N Intake System-Harley Davidson
All Models
$244.99USD
In Stock / Free Shipping
Overview
  • Designed for Harley-Davidson motorcycles
  • Increase horsepower and torque
  • Extra tall air filter design provides even more air flow and longer service intervals than standard RK-series air intakes
  • Easy to install
  • Made in the U.S.A.
  • Backed by K&N Million Mile Limited Warranty
Detailed Info
Estimated Horsepower Gain6.5 HP @ 4650 RPM
Replacement FilterE-3984
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height3.125 in (79 mm)
CARB EO NumberD-269-59
Street Legal In All US StatesSee Vehicle Applications
TUV Approved (Europe)No
Overall Height6 in (152 mm)
Top MaterialAluminum
Weight4.5 lb (2 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
Reviews

RK-3934 K&N Intake System-Harley Davidson
All Models
$294.99USD
In Stock / Free Shipping
Rating:
93% of 100
Overview
  • Designed for Harley-Davidson motorcycles
  • Increase horsepower and torque
  • Easy to install
  • Made in USA
  • Backed by K&N warranty
Detailed Info
Estimated Horsepower Gain10.23 HP @ 5155 RPM
Replacement FilterE-3336
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.25 in (57 mm)
CARB EO NumberD-269-55/59
Street Legal In All US StatesYes
TUV Approved (Europe)No
Inlet Diameter2.313 in (59 mm)
Overall Height2.5 in (64 mm)
Top MaterialChrome
Weight4.8 lb (2.2 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
Reviews
Rating:
93% of 100

RK-3950 K&N Intake System-Harley Davidson
All Models
$346.99USD
In Stock / Free Shipping
Overview
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Cast aluminum high-volume, performance air intake housing in black
  • Washable and reusable K&N High-Flow cotton air filter that provides outstanding performance and protection
  • Integrated internal velocity stack
  • Built-in breathers replace external OE breathers
  • Easy to install, usually in 90 minutes or less
Detailed Info
Estimated Horsepower Gain4.85 HP @ 4851 RPM
Replacement FilterE-3987
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.469 in (63 mm)
CARB EO NumberD-269-59
Street Legal In All US StatesSee Vehicle Applications
TUV Approved (Europe)No
Overall Height3.25 in (83 mm)
Top MaterialBlack Powder Coated
Weight5 lb (2.2 kg)
Product Box Height4.8 in (122 mm)
Product Box Length12 in (305 mm)
Product Box Width9.5 in (241 mm)
Mounting Hardware IncludedYes
Reviews

RK-3950S K&N Intake System-Harley Davidson
All Models
$346.99USD
In Stock / Free Shipping
Overview
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Cast aluminum high-volume, performance air intake housing in silver
  • Washable and reusable K&N High-Flow cotton air filter that provides outstanding performance and protection
  • Integrated internal velocity stack
  • Built-in breathers replace external OE breathers
  • Easy to install, usually in 90 minutes or less
Detailed Info
Estimated Horsepower Gain4.85 HP @ 4851 RPM
Replacement FilterE-3987
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.469 in (63 mm)
CARB EO NumberD-269-59
Street Legal In All US StatesSee Vehicle Applications
TUV Approved (Europe)No
Overall Height3.25 in (83 mm)
Top MaterialSilver Powder Coated
Weight4.9 lb (2.2 kg)
Product Box Height4.9 in (124 mm)
Product Box Length11.9 in (302 mm)
Product Box Width9.4 in (239 mm)
Mounting Hardware IncludedYes
Reviews

RK-3953 K&N Intake System-Harley Davidson
All Models
$203.99USD
In Stock / Free Shipping
Overview
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Cast aluminum high-volume, performance air intake housing in black
  • Washable and reusable K&N High-Flow cotton air filter that provides outstanding performance and protection
  • Integrated internal velocity stack
  • Built-in breathers replace external OE breathers
  • Easy to install, usually in 90 minutes or less
Detailed Info
Estimated Horsepower Gain4.24 HP @ 4358 RPM
Replacement FilterE-3988
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.39 in (61 mm)
CARB EO NumberD-269-59
Street Legal In All US StatesYes
TUV Approved (Europe)No
Overall Height4.25 in (108 mm)
Top MaterialBlack Powder Coated
Package Contents1 Air Filter
Package Quantity1
Weight4.1 lb (1.9 kg)
Product Box Height4.8 in (122 mm)
Product Box Length12 in (305 mm)
Product Box Width9.5 in (241 mm)
Housing MaterialAluminum
Mounting Hardware IncludedYes
Reviews

RK-3953S K&N Intake System-Harley Davidson
All Models
$239.84USD
In Stock / Free Shipping
Overview
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Cast aluminum high-volume, performance air intake housing in silver
  • Washable and reusable K&N High-Flow cotton air filter that provides outstanding performance and protection
  • Integrated internal velocity stack
  • Built-in breathers replace external OE breathers
  • Easy to install, usually in 90 minutes or less
Detailed Info
Estimated Horsepower Gain4.24 HP @ 4358 RPM
Replacement FilterE-3988
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Warranty1,000,000 Miles/10 Year
Product StyleMotorcycle Intake System
Air Filter Height2.39 in (61 mm)
CARB EO NumberD-269-59
Street Legal In All US StatesYes
TUV Approved (Europe)No
Overall Height4.25 in (108 mm)
Top MaterialSilver Powder Coated
Package Contents1 Air Filter
Package Quantity1
Weight4.1 lb (1.9 kg)
Product Box Height4.8 in (122 mm)
Product Box Length12 in (305 mm)
Product Box Width9.5 in (241 mm)
Housing MaterialAluminum
Mounting Hardware IncludedYes
Reviews

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