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KB Performance, 3-5/8 Big Bore Forged Piston Kit. Std for Harley Davidson
KB Performance, 3-5/8 Big Bore Forged Piston Kit. Std for Harley Davidson
Usual price
311.65 €
Usual price
Offer price
311.65 €
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Forged 3-5/8 Big Bore Piston Set.
Used with 3-5/8 "Big Bore Cylinders with 5.330" (stock) to 5.530 "(+.200") Length.
Must use 4-1/4 "(stock) (88"), 4-1/2 "(93 '"), 4-5/8 "(96") to 4-3/4 "(98") Stroker Flywheels.
8.50: 1 Cr with 117cc Head, 4,250 "Stroke & Std. Cyl. Length. 9.38: 1 Cr with 117cc Head & 4,750" Stroke & Std. Cyl. Length
Piston Weight 440gr.
Piston Pin Weight 97gr.
Piston Pin Dia. .791 " / Offset.
Head Type: Dome with -42.3cc.
COMPRESSION HEIGHT 1.285 ".
Bore 3,625 ".
Stroke 1,250 "to 4,750".
Rod Length 7.440 ".
Cyl Length 5.530 "STD To +.200" Higher.
All Kb Forged Pistons are made from 4032 Alloy, 11% Silicon Alloy that is formed in a forging press.
Forging Aluminum Gives to Superior Strength and Structural Integrity On a Molecular Level, after which is Fully Machined.
The Combination of this Alloy and The Forging Process Allows The Piston to Flex Under Detonation, Or Pre -ignation, Giving the Best Resistance to Cracking.
Although 4032 Has to Low Expansion Rate, It is Higher Than The Cast Hypereuter.
Therefore Forged Kb Pistons Will require about .001 "Wider Piston to Wall Clearance.
Pistons Are Sold As Sets, Complete With Wrist Pin Retain Rings, Wrist Pins and Piston Rings.
PLEASE Note That All Kb Forged Pistons Come Equipped With Offset Wrist Pins / Piston Pins.
There is a front and rear section on the piston and it is necessary to install it in the correct way.
Ple
Note: Stock 5.330 "Cylinders can be used with stock 4-1/4" Stroke.
Longer Strokes Require Correct Length Longer Cylinders OR STROKER Plates To Achieve The Desired Compression Ratio.
Fits:> 48-84 bread, Shovel. With 3-5/8 Big Bore Cylinders (NU)
Used with 3-5/8 "Big Bore Cylinders with 5.330" (stock) to 5.530 "(+.200") Length.
Must use 4-1/4 "(stock) (88"), 4-1/2 "(93 '"), 4-5/8 "(96") to 4-3/4 "(98") Stroker Flywheels.
8.50: 1 Cr with 117cc Head, 4,250 "Stroke & Std. Cyl. Length. 9.38: 1 Cr with 117cc Head & 4,750" Stroke & Std. Cyl. Length
Piston Weight 440gr.
Piston Pin Weight 97gr.
Piston Pin Dia. .791 " / Offset.
Head Type: Dome with -42.3cc.
COMPRESSION HEIGHT 1.285 ".
Bore 3,625 ".
Stroke 1,250 "to 4,750".
Rod Length 7.440 ".
Cyl Length 5.530 "STD To +.200" Higher.
All Kb Forged Pistons are made from 4032 Alloy, 11% Silicon Alloy that is formed in a forging press.
Forging Aluminum Gives to Superior Strength and Structural Integrity On a Molecular Level, after which is Fully Machined.
The Combination of this Alloy and The Forging Process Allows The Piston to Flex Under Detonation, Or Pre -ignation, Giving the Best Resistance to Cracking.
Although 4032 Has to Low Expansion Rate, It is Higher Than The Cast Hypereuter.
Therefore Forged Kb Pistons Will require about .001 "Wider Piston to Wall Clearance.
Pistons Are Sold As Sets, Complete With Wrist Pin Retain Rings, Wrist Pins and Piston Rings.
PLEASE Note That All Kb Forged Pistons Come Equipped With Offset Wrist Pins / Piston Pins.
There is a front and rear section on the piston and it is necessary to install it in the correct way.
Ple
Note: Stock 5.330 "Cylinders can be used with stock 4-1/4" Stroke.
Longer Strokes Require Correct Length Longer Cylinders OR STROKER Plates To Achieve The Desired Compression Ratio.
Fits:> 48-84 bread, Shovel. With 3-5/8 Big Bore Cylinders (NU)
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