37871-84 Diaphragm Spring Plate for Big Twin 1984-1989
Fits: Big Twin | FX | FXR | Softail | Tou…
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Specifications
- Brand
- Alto
- Part Number
- 238650
- OEM Reference
- 37871-84
- Pack Quantity
- Each
- Category
- Late 1984-1989 Big Twin 5 Speed Clutch
- VAT Rate
- 20%
About This Product
For those running high-performance engines in 1984–1989 Big Twin, FX, FXR, Softail, or Touring models, this Alto heavy-duty diaphragm spring plate is a necessary upgrade. It is specifically designed to provide a significant increase in plate pressure, ensuring your clutch can handle the extra torque of a modified Evolution motor without slipping. The beauty of this design is that it achieves this extra holding power without making the clutch lever pull excessively heavy, keeping the bike manageable in traffic. Replacing OEM 37871-84, this spring plate is a direct fit for the early 5-speed clutch hubs and is a must-have for any mechanic building a high-output street or strip machine.
Fitment
41 modelsBig Twin | FX | FXR | Softail | Touring
Fxr 10 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1984 | DISC GLIDE FXRDG |
| Harley-Davidson | 1986 | EJLG FXR Custom (1986) EJLG FXRC FXR Custom (1986) FXR Custom FXRC EJLG |
| Harley-Davidson | 1984–1989 | LOW RIDER FXRS |
| Harley-Davidson | 1985–1987 | LOW RIDER CHROME FXRC |
| Harley-Davidson | 1985–1989 | LOW RIDER SPORT EDITION FXRS-SP |
| Harley-Davidson | 1987–1989 | SOFTAIL LOW RIDER FXLR |
| Harley-Davidson | 1984–1989 | SPORT GLIDE FXRT |
| Harley-Davidson | 1985–1989 | SUPER GLIDE FXR |
| Harley-Davidson | 1989 | SUPER GLIDE CONVERTIBLE FXRS CONV |
| Harley-Davidson | 1986 | SUPER GLIDE DELUXE FXRD |
Softail 9 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1984–1985 | BREAKOUT FXSB |
| Harley-Davidson | 1986–1989 | HERITAGE SOFTAIL FLST |
| Harley-Davidson | 1987–1989 | HERITAGE SOFTAIL CLASSIC FLSTC |
| Harley-Davidson | 1986–1989 | SOFTAIL CUSTOM FXSTC |
| Harley-Davidson | 1984–1989 | SOFTAIL STANDARD FXST |
| Harley-Davidson | 1988–1989 | SPRINGER SOFTAIL FXSTS |
| Harley-Davidson | 1984 | SUPER GLIDE FXE |
| Harley-Davidson | 1984–1985 | SUPER GLIDE FXEF |
| Harley-Davidson | 1984–1986 | WIDE GLIDE FXWG |
Touring 22 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1984 | Classic Tour Glide Classic (1984) Tour Glide Classic FLT Classic |
| Harley-Davidson | 1988 | DDLJ Touring Electra Glide Standard (1988) DDLJ FLHT Touring Electra Glide Standard (1988) Touring Electra Glide Standard FLHT DDLJ |
| Harley-Davidson | 1984 | Electra Glide (1984) Electra Glide FLHT |
| Harley-Davidson | 1984–1989 | ELECTRA GLIDE CLASSIC FLHTC |
| Harley-Davidson | 1985–1989 | ELECTRA GLIDE CLASSIC SHRINE FLHTC SHRINE |
| Harley-Davidson | 1984–1989 | ELECTRA GLIDE CLASSIC WITH SIDECAR FLHTC WITH SIDECAR |
| Harley-Davidson | 1984 | ELECTRA GLIDE SPECIAL WITH SIDECAR FLHX WITH SIDECAR |
| Harley-Davidson | 1984–1989 | ELECTRA GLIDE SPORT FLHS |
| Harley-Davidson | 1984 | ELECTRA GLIDE STANDARD SHRINE FLH SHRINE |
| Harley-Davidson | 1984–1985 | Street Glide® FLHX |
| Harley-Davidson | 1986 | TOUR GLIDE FLT |
| Harley-Davidson | 1984–1989 | TOUR GLIDE CLASSIC FLTC |
| Harley-Davidson | 1986–1989 | TOUR GLIDE CLASSIC SHRINE FLTC SHRINE |
| Harley-Davidson | 1984–1989 | TOUR GLIDE CLASSIC WITH SIDECAR FLTC WITH SIDECAR |
| Harley-Davidson | 1989 | TOUR GLIDE ULTRA CLASSIC FLTCU |
| Harley-Davidson | 1989 | TOUR GLIDE ULTRA CLASSIC SHRINE FLTCU SHRINE |
| Harley-Davidson | 1989 | TOUR GLIDE ULTRA CLASSIC WITH SIDECAR FLTCU WITH SIDECAR |
| Harley-Davidson | 1986–1987 | TOURING ELECTRA GLIDE STANDARD FLHT |
| Harley-Davidson | 1989 | TOURING ELECTRA GLIDE ULTRA CLASSIC FLHTCU |
| Harley-Davidson | 1984–1985 | TOURING REVIVAL FLH |
| Harley-Davidson | 1989 | ULTRA CLASSIC SHRINE FLHTCU SHRINE |
| Harley-Davidson | 1989 | ULTRA CLASSIC WITH SIDECAR (JAPAN) FLHTCU WITH SIDECAR |
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