S&S CYCLE 88" Sidewinder 3-5/8" Big Bore Cylinder Kit for '79-'84 Big Twins - Gloss Black Finish - 91-9001
🚚 Estimated Delivery: 02 Sep - 09 Sep
CONFIRM FITMENT BEFORE ORDERING
Please confirm fitment for your bike below as we do not accept returns on parts ordered incorrectly.
Installing this 3-5/8" big bore kit will increase the displacement of stock 80" HD® shovelhead engines to 88" using the stock 4-1/4" flywheels. This may also be used to build an 88" engine in 74" shovelheads if a 4-1/4" stroke flywheel assemble is also installed. The kit includes S&S 3-5/8" bore cylinders, 3-5/8" bore forged pistons with rings and wristpins, S&S stainless steel head bolts, base nuts, head gaskets, base gaskets, exhaust gaskets, and instructions. Compression is 7.5:1. The cylinders are stock length so stock length pushrods and manifold may be used.
- Cylinder and piston kit can be used to build an 88" engine, or to replace the cylinders and piston in an engine with an existing S&S stock bore stroker kit
- Includes 3-5/8" bore high tensile cast iron cylinders, forged pistons with rings and wristpins, head gaskets, stainless steel head bolts with washers, base nuts and base gaskets
- 88", 7.5:1 compression
- Can be used in engines with 4-1/4" flywheels
- Made in the U.S.A.
- Crankcases must be bored to accept the larger 3-5/8" cylinders and stock flywheel assembly should be rebalanced.
Fitment Guide
| 1984 | Harley-Davidson | FLHX Electra Glide Special | - | - |
| 1984 | Harley-Davidson | FXRDG Disc Glide | - | - |
| 1984 | Harley-Davidson | FXRS Low Glide | - | - |
| 1984 | Harley-Davidson | Tour Glide FLT | - | - |
| 1984 | Harley-Davidson | FXST Softail Standard | - | - |
| 1984 | Harley-Davidson | FXRP | - | - |
| 1983-1984 | Harley-Davidson | FLHTC Electra Glide Classic | - | - |
| 1983-1984 | Harley-Davidson | FXSB Low Rider - Belt | - | - |
| 1983-1984 | Harley-Davidson | Electra Glide Standard FLHT | - | - |
| 1983-1984 | Harley-Davidson | FXRT Sport Glide | - | - |
| 1983-1984 | Harley-Davidson | Electra Glide Police FLHTP | - | - |
| 1983 | Harley-Davidson | FXDG Disc Glide | - | - |
| 1982-1983 | Harley-Davidson | FXR Super Glide II | - | - |
| 1982-1983 | Harley-Davidson | Super Glide II FXRS | - | - |
| 1981-1984 | Harley-Davidson | FLTC Tour Glide Classic | - | - |
| 1981-1982 | Harley-Davidson | Electra Glide Classic FLH | - | - |
| 1981 | Harley-Davidson | FXEF Fat Bob | - | - |
| 1981 | Harley-Davidson | Electra Glide Heritage FLH | - | - |
| 1980-1984 | Harley-Davidson | FXWG Wide Glide | - | - |
| 1980-1983 | Harley-Davidson | FLT Tour Glide | - | - |
| 1980-1982 | Harley-Davidson | FLHS Electra Glide Sport | - | - |
| 1980-1982 | Harley-Davidson | FXB Sturgis | - | - |
| 1980 | Harley-Davidson | Tour Glide Classic FLTC | - | - |
| 1979-1981 | Harley-Davidson | FLHC Electra Glide Classic | - | - |
| 1979-1980 | Harley-Davidson | 1200 Fat Bob FXEF | - | - |
| 1979-1980 | Harley-Davidson | Super Glide 80 FXE | - | - |
| 1979-1980 | Harley-Davidson | 1200 Super Glide FXE | - | - |
| 1979-1980 | Harley-Davidson | 1200 Super Glide FX | - | - |
| 1979-1980 | Harley-Davidson | Fat Bob FXEF | - | - |
| 1979 | Harley-Davidson | Electra Glide Sport FLHS | - | - |
| 1979 | Harley-Davidson | 1200 Low Rider FXS | - | - |
| 1979 | Harley-Davidson | Electra Glide FLH | - | - |
| 1979 | Harley-Davidson | Low Rider FXS | - | - |
| 1977-1978, 1980-1982 | Harley-Davidson | FXS Low Rider | - | - |
| 1974-1978, 1981-1984 | Harley-Davidson | FXE Super Glide | - | - |
| 1971-1978 | Harley-Davidson | FX Super Glide | - | - |
| 1970-1978, 1980-1984 | Harley-Davidson | FLH Electra Glide | - | - |
| 1966-1981 | Harley-Davidson | Electra Glide FL | - | - |
| 1966-1979, 1981 | Harley-Davidson | FL | - | - |
| 1966-1970 | Harley-Davidson | FS | - | - |
| 1966-1969, 1978-1980 | Harley-Davidson | 1200 Electra Glide FLH | - | - |
Specs
| PRODUCT NAME | CYLINDER AND PISTON KIT |
| STYLE | BIG BORE |
| BASE COLOR | BLACK |
| FINISH | GLOSS BLACK |
| COLOR/FINISH | GLOSS BLACK |
| MATERIAL | CAST / IRON |
| BORE SIZE | 3.625" |
| DISPLACEMENT | 88" |
| STROKE LENGTH | 4-1/4" |
| COMPRESSION RATIO | 7.5:1 |
| UNITS | KIT |
| RIDING STYLE | STREET |
Delivery Info
Please Note - Warehouse Locations For This Part -
S&S CYCLE 88" Sidewinder 3-5/8" Big Bore Cylinder Kit for '79-'84 Big Twins - Gloss Black Finish - 91-9001
Gold Coast Warehouse- If your parts are in stock at our Gold Coast warehouse at the time of order, they will be shipped within 24hrs.
Supplier Warehouse - 2-3 Week Delivery- If your parts are located at our Supplier Warehouse, Delivery ETA is approx 2-3 weeks, as the parts are likely coming from our USA supplier warehouse. We will notify you once we receive it in Gold Coast warehouse and its on its way to you.