KB PERFORMANCE Piston Kit - 3.498" Standard - 8.3:1 CR - 4.250" Stroke - 80" Big Twin [KB297STD]

KB PERFORMANCE Piston Kit - 3.498" Standard - 8.3:1 CR - 4.250" Stroke - 80" Big Twin [KB297STD]

Manufacturer Part Number: KB297STD

Parts Unlimited Part Number: DS751258

Product Type: Piston & Ring Kits

Piston Kit - 3.498" Standard - 8.3:1 CR - 4.250" Stroke - 80" Big Twin

Details

• Compression Ratio: 8.3:1
• Bore Size: 3.498"
• Bore - Oversize: Standard
• Displacement: 80"
• Piston Material: Hypereutectic Alloy
• Product Name: Piston Kit
• Displacement: 1340 cc
• Riding Style: Street
• Units: Kit
• 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.

Verified Fitment

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