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Free Shipping on orders over $69.99 to the continental 48 (Alaska & Hawaii orders, call 402-214-0706 to order).
All products have accurate in stock quantities listed, if it shows in stock it’s actually in stock!
Kb Performance

KB Performance Piston Kit - KB425C.005 For Harley Motorcycles 1999-2006

MPN: KB425C.005 SKU: 0910-6088
Kb Performance

KB Performance Piston Kit - KB425C.005 For Harley Motorcycles 1999-2006

MPN: KB425C.005 SKU: 0910-6088
Availability:
Only 1 left!
Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy Allows 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 sold 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 Units Kit Compression Ratio 8.8:1 Piston Material Hypereutectic Alloy Product Name Piston Kit Riding Style Street Bore Size 3.750" Piston Head Shape Flat Top Bore Oversize +0.005"
Original price $287.95 - Original price $287.95
Original price
$287.95
$287.95 - $287.95
Current price $287.95

Product Details

Features

  • Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy
  • Allows 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 sold 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

Units Kit
Compression Ratio 8.8:1
Piston Material Hypereutectic Alloy
Product Name Piston Kit
Riding Style Street
Bore Size 3.750"
Piston Head Shape Flat Top
Bore Oversize +0.005"


Product Description

Features

  • Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy
  • Allows 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 sold 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

Units Kit
Compression Ratio 8.8:1
Piston Material Hypereutectic Alloy
Product Name Piston Kit
Riding Style Street
Bore Size 3.750"
Piston Head Shape Flat Top
Bore Oversize +0.005"


Part Numbers
Store SKU MFR. Product # Availability
0910-6088 KB425C.005 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.

Features

  • Manufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloy
  • Allows 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 sold 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

Units Kit
Compression Ratio 8.8:1
Piston Material Hypereutectic Alloy
Product Name Piston Kit
Riding Style Street
Bore Size 3.750"
Piston Head Shape Flat Top
Bore Oversize +0.005"