Manufacturer & Distributor Part Numbers:  
Je Pistons Punctuated Part#:  391731
Je Pistons NON-Punctuate Part #:  391731
Drag Specialties Punctuated Part#:  0910-6859
Drag Specialties NON-Punctuate Part#:  09106859

Piston Kit - 4.250" - M8

Features

• Propriety aligned grain flow forging technology for maximum tensile strength suited for high performance enviroment
• Cermic crown coating protects the piston by reducing heat transfer
• Internal and external bracing maintains optimized strength-to-weight ratio for longevity
• 3D undercrown milling in non-critical areas reduces overall weight
• Lateral gas ports and accumulator groove maintain power-producing ring seal even at high RPM and high boost
• Skirt coating reduces operating friction and wear throughout the life of piston
• Offset pin reduces piston rock and minimize engine operating noise
• Skirt notches for optimal clearance at the bottom dead center
• Kit includes two pistons, premium ring pack, wrist pins and wire locks

Specs

Parts Notes:

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.