3-5/8" bore cylinder set for modified 1984–'99 Harley-Davidson® Sportster® models or 1994–'02 Buell® models with 89" or 103" Sidewinder® kits and stock style cylinder heads. Stock crankcases must be machined to accommodate the larger spigot diameter. Valve pocket recesses in S&S pistons are enlarged for oversize valves and higher lift cams. Combustion chamber modifications must be made to stock cylinder heads to reduce compression. Choose displacement and finish. Cylinders only.
| S&S® 3 5/8" BORE CYLINDERS & PISTONS FOR 1986–’03 SPORTSTER® & 1994–’02 BUELL® MODELS WITH S&S SUPER STOCK® HEADS |
| Displacement |
Stroke
|
Cylinder Length |
Piston Deck Height |
Compression Ratio
(Low/Intermediate/High) |
Finish (Cylinders Only) |
| Natural |
Black |
| 89" |
4 5/16" |
5.087" |
1.200" |
9.5:1/10.3:1/12.4:1 |
91-3200 |
91-3913 |
| 103" |
5" |
5.750" |
1.200" |
10.9:1/11.8:1/14.2:1 |
91-3500 |
91-3921 |
