DRAG SPECIALTIES Piston - Manufacturer ref. 21988-07
Reliable replacement for Harley-Davidson engines in the Vintage/Classic and Touring categories. This cast aluminium piston, of OEM quality, is designed to fit a standard bore (oversized: Standard). Each kit includes two pistons, pins, and circlips, ready for installation (OEM or Hastings rings to be ordered separately).
- Piston diameter (imperial): 3.750
- Piston diameter: 3.750
- Stroke length: 4-3/8
- Material: cast aluminium
- Delivered as a complete kit: 2 pistons, pins, and circlips
- Ring compatibility: OEM or Hastings (not included)
Some versions of this piston are offered with a coating designed to improve wear resistance and reduce friction, contributing to a more controlled operating temperature depending on the applications. Cost-effective product suitable for OEM replacement for restorations or regular maintenance on Dyna and similar models.
Examples of compatible motorcycles:
- Harley-Davidson FXDC 1584 ABS Dyna Super Glide Custom (2013)
- Harley-Davidson FXDB 1584 ABS Dyna Street Bob (2013)
- Harley-Davidson FXDWG 1584 ABS Dyna Wide Glide (2012)
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