Free shipping to the Contiguous United States on orders over $69.99

Book your on-site cam install! Slots are limited.

Kb Performance

KB Performance Hypereutectic Piston Kit 3.498" +0.020" 8.3:1 CR 4.250" Stroke 80" Big Twin - KB297.020 For Harley Motorcycles 1978-1984

MPN: KB297.020 SKU: DS-751261
Kb Performance

KB Performance Hypereutectic Piston Kit 3.498" +0.020" 8.3:1 CR 4.250" Stroke 80" Big Twin - KB297.020 For Harley Motorcycles 1978-1984

MPN: KB297.020 SKU: DS-751261
SKU: DS-751261
Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy Allow a tighter fit and longer piston and ring life Diamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005") tolerances from piston to piston Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings Replacement piston rings and pin lock rings available separately KB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance. Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation. Specs Compression Ratio 8.3:1 Product Name Piston Kit Riding Style Street Piston Material Hypereutectic Alloy Units Kit Bore Oversize +0.020" Bore Size 3.498" 1978-1984 Harley-Davidson Electra Glide FLH 1979-1980 Harley-Davidson 1200 Electra Glide FLH 1979-1981 Harley-Davidson 1200 Fat Bob FXEF 1979-1982 Harley-Davidson Low Rider FXS 1979-1980 Harley-Davidson Super Glide 80 FXE 1980-1982 Harley-Davidson Electra Glide Sport FLHS 1980-1982 Harley-Davidson Sturgis FXB 1980-1983 Harley-Davidson Tour Glide Classic FLTC 1980-1983 Harley-Davidson Tour Glide FLT 1980-1984 Harley-Davidson Wide Glide FXWG 1981-1982 Harley-Davidson Electra Glide Classic FLH 1981 Harley-Davidson Electra Glide Heritage FLH 1981-1984 Harley-Davidson Super Glide FXE 1982-1983 Harley-Davidson Super Glide II FXR 1982-1983 Harley-Davidson Super Glide II FXRS 1983 Harley-Davidson Disc Glide FXDG 1983 Harley-Davidson Electra Glide Classic FLHTC 1983 Harley-Davidson Electra Glide Standard FLHT 1983-1984 Harley-Davidson Low Rider FXSB 1983 Harley-Davidson Sport Glide FXRT 1984 Harley-Davidson Electra Glide Special FLHX Fitment DisclosureThis quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.
Regular price $246.95
Shipping calculated at checkout.

Product Details

Product Description

Features

  • Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy
  • Allow a tighter fit and longer piston and ring life
  • Diamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005") tolerances from piston to piston
  • Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings
  • Replacement piston rings and pin lock rings available separately
  • KB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.
  • Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.

Specs

Compression Ratio 8.3:1
Product Name Piston Kit
Riding Style Street
Piston Material Hypereutectic Alloy
Units Kit
Bore Oversize +0.020"
Bore Size 3.498"

1978-1984 Harley-Davidson Electra Glide FLH
1979-1980 Harley-Davidson 1200 Electra Glide FLH
1979-1981 Harley-Davidson 1200 Fat Bob FXEF
1979-1982 Harley-Davidson Low Rider FXS
1979-1980 Harley-Davidson Super Glide 80 FXE
1980-1982 Harley-Davidson Electra Glide Sport FLHS
1980-1982 Harley-Davidson Sturgis FXB
1980-1983 Harley-Davidson Tour Glide Classic FLTC
1980-1983 Harley-Davidson Tour Glide FLT
1980-1984 Harley-Davidson Wide Glide FXWG
1981-1982 Harley-Davidson Electra Glide Classic FLH
1981 Harley-Davidson Electra Glide Heritage FLH
1981-1984 Harley-Davidson Super Glide FXE
1982-1983 Harley-Davidson Super Glide II FXR
1982-1983 Harley-Davidson Super Glide II FXRS
1983 Harley-Davidson Disc Glide FXDG
1983 Harley-Davidson Electra Glide Classic FLHTC
1983 Harley-Davidson Electra Glide Standard FLHT
1983-1984 Harley-Davidson Low Rider FXSB
1983 Harley-Davidson Sport Glide FXRT
1984 Harley-Davidson Electra Glide Special FLHX

Fitment Disclosure

This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.
Part Numbers
Store SKU MFR. Product # Availability
DS-751261 KB297.020 In Stock
Fitment
This product is vehicle specific. Select your vehicle to confirm fitment.

This Product Fits

Fitment Disclosure

This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.