Starter Piston Spring 

Ref. H-D : 27315-88

As per photos

Brand : Harley-Davidson

Type : New

Fits on :

The part is compatible with the following motorcycles :

Touring
Electra Glide Sport : FLHS (1990).
Electra Glide Classic : FLHTC (1990).
Electra Glide Classic Ultra : FLHTCU (1990).
Tour Glide Classic : FLTC (1990).
Tour Glide Classic Ultra : FLTCU (1990).

Softail
Heritage : FLST (1990).
Heritage Classic : FLSTC (1990).
Fat Boy : FLSTF (1990).
Standard : FXST (1990).
Custom : FXSTC (1990).
Springer : FXSTS (1990).

FXR
Low Rider (Custom) : FXLR (1990).
Super Glide : FXR (1990).
Police Low Rider : FXRP (1984-1990, 1995).
Convertible : FXRS CONV (1990).
Low Glide : FXRS (1990).
Sport : FXRS-SP (1990-1992).
Touring : FXRT (1990).

Sportster
1200 : XL1200 (1990), XLH1200 (1988-1989).
883 : XL883 (1990), XLH883 (1988-1989).
883 Deluxe : XL883DLX (1990), XLH883DLX (1988-1989).
883 Hugger : XL883HUG (1990), XLH883HUG (1988-1989).