Tracker Series™ Piston Kit — 1691 cc, 3.875 in bore, 4.375 in stroke, fits '10–'14 103 Cubic Inch Twin Cam

WISECO Tracker Series™ Piston Kit — 1691 cc, 3.875 in bore, 4.375 in stroke, fits '10–'14 103 Cubic Inch Twin Cam – 07, 10-11 Touring, 07-12 Softail, 07-12 Dyna

WISECO
0903-1565
WK0210PS
High-strength forged pistons with ArmorGlide® coating; includes pistons, rings, pins and circlips. Requires aftermarket EFI tuner on fuel injected models; fits select Screamin' Eagle and 103 Twin Cam applications.
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🔧 Tracker Series™ piston kit delivers durable, high-performance components engineered for heavy-duty street use.

  • Forged piston crown with generous valve pockets for big valves and cams.
  • Precision-fit rings selected for each application for ultimate sealing.
  • Force-fed pin oiling provides enhanced lubrication of the piston pin.
  • Pressure seal groove reduces ring lifting and power loss.
  • ArmorGlide® skirt coating reduces friction, provides quieter operation and improves scuff resistance.
  • Valued-packaged with two pistons, rings, piston pins and circlips.

🇺🇸 Piston is made in the USA. Requires an aftermarket EFI tuner on fuel injected models. Fits '11-'15 Screamin' Eagle cylinder heads. Drop in kit for '10-'14 103 Cubic Inch Twin Cam. Recalibration is required.

Kit includes: 2x Tracker Series™ pistons, 2x VM-ring packages, 2x piston pins and 4x circlips.

: 0903-1565
In Stock

Data sheet

Units
Kit
Brand
WISECO
Skirt Coating
ArmorGlide®
Bore - Oversize
Standard
Piston Material
Aluminum Alloy, Forged
Bore Size
3,875"
Displacement
1691 cc
Piston Head Shape
Positive Dome, +5.0 cc Volume
Stroke Length
4,375"
Compression Ratio
10.5:1
Harley Family
Dyna
Softail
Touring

This product fits the following vehicles. Use the filters below to narrow down the list if needed.

Manufacturer Model Family Year Notes
Harley Davidson Road King Touring 2007
Harley Davidson Road King Touring 2011
Harley Davidson Road King Classic Touring 2007
Harley Davidson Road King Classic Touring 2010
Harley Davidson Road King Custom Touring 2007
Harley Davidson Electra Glide Touring 2007
Harley Davidson Electra Glide Touring 2010
Harley Davidson Electra Glide Touring 2010
Harley Davidson Electra Glide Classic Touring 2007
Harley Davidson Electra Glide Ultra Classic Touring 2007
Harley Davidson Street Glide Touring 2007
Harley Davidson Heritage Softail Classic Softail 2007
Harley Davidson Heritage Softail Classic Softail 2008
Harley Davidson Heritage Softail Classic Softail 2009
Harley Davidson Heritage Softail Classic Softail 2010
Harley Davidson Heritage Softail Classic Softail 2011
Harley Davidson Heritage Softail Classic Softail 2011
Harley Davidson Fat Boy Softail 2007
Harley Davidson Fat Boy Softail 2008
Harley Davidson Fat Boy Softail 2009
Harley Davidson Fat Boy Softail 2010
Harley Davidson Fat Boy Softail 2011
Harley Davidson Fat Boy Softail 2011
Harley Davidson Fat Boy Special Softail 2010
Harley Davidson Fat Boy Lo Softail 2011
Harley Davidson Fat Boy Special Softail 2011
Harley Davidson Softail Deluxe Softail 2007
Harley Davidson Softail Deluxe Softail 2008
Harley Davidson Softail Deluxe Softail 2009
Harley Davidson Softail Deluxe Softail 2010
Harley Davidson Softail Deluxe Softail 2011
Harley Davidson Softail Deluxe Softail 2011
Harley Davidson Cross Bones Springer Softail 2008
Harley Davidson Cross Bones Springer Softail 2009
Harley Davidson Cross Bones Springer Softail 2010
Harley Davidson Cross Bones Springer Softail 2011
Harley Davidson Softail Springer Classic Softail 2007
Harley Davidson Road Glide Touring 2007
Harley Davidson Road Glide Touring 2010
Harley Davidson Road Glide Touring 2010
Harley Davidson Road Glide Ultra Touring 2011
Harley Davidson Road Glide Custom Touring 2010
Harley Davidson Road Glide Custom Touring 2011
Harley Davidson Road Glide Custom Touring 2010
Harley Davidson Rocker Softail 2008
Harley Davidson Rocker Softail 2009
Harley Davidson Rocker C Softail 2008
Harley Davidson Rocker C Softail 2009
Harley Davidson Rocker C Softail 2010
Harley Davidson Rocker C Softail 2011
Harley Davidson Rocker C Softail 2011
Harley Davidson Dyna Super Glide Dyna 2007
Harley Davidson Dyna Super Glide Dyna 2008
Harley Davidson Dyna Super Glide Dyna 2009
Harley Davidson Dyna Super Glide Dyna 2010
Harley Davidson Dyna Street Bob Dyna 2007
Harley Davidson Dyna Street Bob Dyna 2008
Harley Davidson Dyna Street Bob Dyna 2009
Harley Davidson Dyna Street Bob Dyna 2010
Harley Davidson Dyna Street Bob Dyna 2011
Harley Davidson Dyna Street Bob Dyna 2012
Harley Davidson Dyna Street Bob Dyna 2012
Harley Davidson Dyna Super Glide Custom Dyna 2007
Harley Davidson Dyna Super Glide Custom Dyna 2008
Harley Davidson Dyna Super Glide Custom Dyna 2009
Harley Davidson Dyna Super Glide Custom Dyna 2010
Harley Davidson Dyna Super Glide Custom Dyna 2011
Harley Davidson Dyna Super Glide Custom Dyna 2012
Harley Davidson Dyna Super Glide Custom Dyna 2012
Harley Davidson Dyna Fat Bob Dyna 2008
Harley Davidson Dyna Fat Bob Dyna 2009
Harley Davidson Dyna Fat Bob Dyna 2010
Harley Davidson Dyna Fat Bob Dyna 2011
Harley Davidson Dyna Fat Bob Dyna 2012
Harley Davidson Dyna Low Rider Dyna 2007
Harley Davidson Dyna Low Rider Dyna 2008
Harley Davidson Dyna Low Rider Dyna 2009
Harley Davidson Dyna Wide Glide Dyna 2007
Harley Davidson Dyna Wide Glide 105th Anniversary Dyna 2008
Harley Davidson Dyna Wide Glide Dyna 2010
Harley Davidson Dyna Wide Glide Dyna 2011
Harley Davidson Dyna Wide Glide Dyna 2012
Harley Davidson Blackline Softail 2011
Harley Davidson Blackline Softail 2011
Harley Davidson Blackline Softail 2012
Harley Davidson Softail Softail 2007
Harley Davidson Softail Standard Softail 2008
Harley Davidson Softail Standard Softail 2009
Harley Davidson Softail Standard Softail 2010
Harley Davidson Softail Standard Softail 2011
Harley Davidson Softail Night Train Softail 2007
Harley Davidson Softail Night Train Softail 2008
Harley Davidson Softail Night Train Softail 2009
Harley Davidson Softail Custom Softail 2007
Harley Davidson Softail Custom Softail 2008
Harley Davidson Softail Custom Softail 2009
Harley Davidson Softail Custom Softail 2010
Harley Davidson Softail Deuce Softail 2007