• Drag part number: DS-751287
• Manufacturer Number: KB411.005
• 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
• Use lock rings Part #0913-0001 (4-pk)

• Product Name: Piston Kit
• Piston Material: Hypereutectic Alloy
• Bore Size: 3.875"
• Bore - Oversize: +0,005"
• Bore Oversize: +0.005"
• Compression Ratio: 10.5:1
• Units: Kit
• Riding Style: Street

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