Engine Parts
Pistons 103 Tc 10:1 Standard
Part # 0910-0915
$236.95
NY: 0
National: 9
- —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.
Calculated shipping at checkout
30-day returns on unused parts
Ships in 1–3 business days
Specifications
Product NamePiston Kit
UnitsKit
Bore Size3.875"
Compression Ratio10.0:1
Bore - OversizeStandard
Ring MaterialMoly Coated
Piston Head ShapeFlat Top
Displacement103"
Riding StyleStreet
Stroke Length4.375"
Piston MaterialHypereutectic Alloy
Weight2.6 lbs
Dimensions (L x W x H)6.29" x 6.09" x 5.78"
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Not sure it fits? Call our Harley techs at 607-654-7431.














