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Wiseco Black Edition V-Twin. Piston Kit – 4.125 in. Bore


Your Price: $485.22

SKU: K2801

Estimated Shipped Date 3-4 Weeks

Wiseco Black Edition V-Twin. Piston Kit, 4.125 in. Bore, 11:1 CR

Wiseco Black Edition pistons are designed and built to be the ultimate in piston performance and durability for Harley-Davidson engines. Introducing proprietary, industry first coatings, Black Edition pistons perform as good as they look. Wiseco’s ArmorX coating protects critical areas of the piston for miles and miles of riding, while ArmorFit skirt coating helps reduce engine noise and friction. Equip your performance Harley build with the American-made pistons it deserves.

  • Engineered, forged, and machined in the USA in Mentor, OH
  • ArmorX coating applied to piston crown, ring grooves, and pin bore through proprietary electrochemical process and materials
  • Greatly increased resistance to wear and damage caused by heat and detonation plus resists ring microwelding
  • Ideal for high-performance environments – from natural aspiration to power adders
  • Remains durable in high load, high cylinder pressure, high heat environments
  • ArmorFit skirt coating allows forged piston to be installed at tighter clearance, conforming to the cylinder bore through normal operation for ideal performance with less guesswork
  • Various compression ratios and bore sizes available off the shelf to fit specific builds
  • Kits include ring packs, wrist pins, and circlips

GTIN: 00193564150448

Product Series

Black Edition V-Twin Series

Included Components

Piston #40225PS, Ring Set #4125VMF, Wrist Pin #927-2500-15-52C, CirClip #W5752

Bore Diameter

4.125 IN

Piston Diameter

4.122 IN

Skirt Coating

Yes

Instructions: Enter a value in the un-shaded boxes below as they pertain to your engine.
Note: For pistons BELOW the block @ TDC – value in box must be a POSITIVE number (.000)
Note: For pistons ABOVE the block @ TDC – value in box must be a NEGATIVE number (-.000)
Note: For a DISH piston – value in box must be a POSITIVE number (0.0)
Note: For a DOME piston – value in box must be a NEGATIVE number (-0.0)
Note: Manipulate the DOME/DISH & PISTON to DECK volumes to get the ratio you want.
Enter the number of cylinders of your engine
Bore
Finished bore of your engine
Stroke
Stroke of your engines crankshaft
Rod Length
Ctr. to Ctr. length of your connecting rods
Gasket Bore
Head Gasket bore diameter
Comp. Gasket
Compressed Head Gasket thickness
Block Deck Height
Center of main bearing bore to top of block
Top Ring Down
Top of 1st ring to top of pistons(FLAT)
Chamber Volume
Cylinder Head chamber volume in CC’s
Dome/Dish Volume
DOME (-) or DISH (+) vol. (theoretical) in CC’s
Piston to Deck
Top of BLOCK to top of piston (FLAT) @ TDC
Click “Calculate” for dimension results.
Total Volume
 
Cylinder Volume
Total cylinder volume in CC’s =
Clearance Volume
All effective vol. above block deck @ TDC in CC’s =
Gasket Volume
Volume of your head gasket in CC’s =
Top Ring Volume
Total volume above the top ring @ TDC in CC’s =
Deck Volume
Volume of area above the pistons @ TDC in CC’s =
Piston Top Land
Piston top land diameter for volume calculations =
1/2 Stroke
1/2 stroke of your engine’s crankshaft in inches =
Compression Ht.
Ctr. of piston pin to top of piston (FLAT) in inches =
Cubic Inches
Cubic inch displacement of your engine =
For the given dimensions, your compression ratio