31-0001 S&S 84-91 crankcase assembly, 3-5/8" bore. Natural for Harley-Davidson
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Specifications
- Brand
- S&S
- Part Number
- 31-0001
- OEM Reference
- 26190-73
- Pack Quantity
- Sold as a set
- Category
- Crankcases
- VAT Rate
- 20%
About This Product
S&S Superstock crankcase assembly for 1984-1991 Evolution Big Twin models with 3-5/8 inch big bore. Sold as a set in natural finish with instructions. Cast from 356-T6 aluminium. The sprocket shaft Timken main bearing races, cam needle bearings, and the pressed and line-honed pinion shaft bearing race come pre-assembled. The kit includes cylinder studs, nickel-plated bolts, crankcase fittings, an oil pressure sensor, timing and magnetic drain plugs, and an alternator stator plug clamp screw. The ported breather improves scavenging. Cases are clearanced for up to five-inch stroker flywheels. Replaces OEM reference 26190-73. 1984 to early 1985 Evo models need a late 1985 to 1991 style cylinder head bolt kit.
Manufacturer part number: 31-0001.
Fitment
18 models84-91 Evo Big Twin with 3-5/8" big bore
FXR 6 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1988–1990 | FXR Low Rider FXLR |
| Harley-Davidson | 1985–1990 | FXR Touring FXRT |
| Harley-Davidson | 1991 | Low Rider Custom FXLR |
| Harley-Davidson | 1985–1990 | Police Low Rider FXRP |
| Harley-Davidson | 1991 | Sport Glide FXRT |
| Harley-Davidson | 1991 | Super Glide Police (Fairing) FXRP |
Softail 10 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1985–1986 | FX Wide Glide FXWG |
| Harley-Davidson | 1991 | Fat Boy FLSTF |
| Harley-Davidson | 1991 | Heritage Softail Classic FLSTC |
| Harley-Davidson | 1987–1991 | Softail Custom FXSTC |
| Harley-Davidson | 1990 | Softail Fat Boy FLSTF |
| Harley-Davidson | 1988–1990 | Softail Heritage Classic FLSTC |
| Harley-Davidson | 1986–1990 | Softail Heritage FLST |
| Harley-Davidson | 1988–1990 | Softail Springer FXSTS |
| Harley-Davidson | 1984–1990 | Softail Standard FXST |
| Harley-Davidson | 1991 | Springer Softail FXSTS |
Touring 2 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1991 | Tour Glide Ultra Classic FLTCU |
| Harley-Davidson | 1989–1990 | Touring Tour Glide Classic Ultra FLTCU |
Planning other changes? Find your model in the bike customiser.
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