Add your bike to check fitmentSelect bike
Product image
JE PISTONS

JE Pistons #394140 - Piston Kit - 4.320" - 10.25:1 CR - 114"/117" M8

Part #: 0910-6858
From $620.49
JE Pistons #394140 - Piston Kit - 4.320" - 10.25:1 CR - 114"/117" M8—
$620.49

Fits These Vehicles

Shipping & Returns

Description

Piston Average Weight: 456 grams

Piston Volume: -18.10 cc

Two cylinder piston kit.

Includes:

• 2x Pistons

• 2x Ring Sets

• 2x Wrist Pins

• 4x Circlips

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
  • Tuff Skirt is a propriety, moly based dry film skirt coating that is applied in-house and reduces operating friction for better wear resistance
  • 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

Product NamePiston Kit
Bore - Oversize+0,070"
Bore Size4.320"
Skirt CoatingTuff Skirt
TypeForged Side Relief Design
Compression Ratio10.25:1
Riding StyleStreet
Stroke Length4.500"
UnitsKit
ModelUltra Series
Piston MaterialForged 2618 Aluminum
Piston Head ShapeDished
JE Pistons #394140 - Piston Kit - 4.320" - 10.25:1 CR - 114"/117" M8 | Direct Cycle Parts