Available for owners of stock 80" engines and for engines already equipped with S&S 89" stock bore stroker kits. Stock crankcases must be bored to accept the big bore cylinders. Complete instructions are included.
FITMENT
- 1984-’99 carbureted
- 1995-'98 EFI engines
FEATURES AND BENEFITS
OPTIONS
- 88", 96", 98" and 103" displacements available
- Natural or wrinkle black powdercoat cylinder finish
- Top end kits for 80" engines and engines with S&S 89" stroker kits
- Valve train items—Cams, tappets, valve springs, rocker arms, rocker covers
- Fuel system— Manifolds, carburetors, EFI throttle bodies, EFI modules
- Factory installation available
EXTRA PARTS NEEDED:
1977–'89 style pinion gear and oil pump drive gears must be used when installing S&S flywheels in 1990-'99 engines.
Notes:
- Cases must be bored to accept 3 5/8" bore cylinders, and a minor crankcase clearancing operation for the crankpin nut must be performed for 96", 98", and 103" kits.
- Stock 80" flywheels (4 1⁄4" stroke) must be rebalanced when installing the 88" top end kit.
- For more info on CTO 106-5836 click here
| Complete S&S® Sidewinder® KIts for Harley-Davidson® Evolution® Big Twin Engines |
| Displacement |
Stroke |
Compression Ratio |
Cylinder Length |
Application |
Engine life |
Natural |
Black |
| 88”** |
4 1⁄4” |
9:1 |
-.175” |
Street |
Stock-like |
– |
– |
| 96” |
4 5⁄8” |
9.75:1 |
+.015” |
Some trips, street & strip |
Good
|
91-7202* |
91-7702* |
| 91-7660 |
91-7661 |
| 98”** |
4 3⁄4” |
10:1 |
+.075” |
Street and Strip |
Fair |
– |
– |
| 103” |
5” |
10.5:1 |
+.200” |
Little street, mostly strip |
Poor |
– |
– |
| CTO |
Specify |
Specify |
Specify
|
– |
– |
106-5836 |
| *Denotes big bore Top End Kit only. **88", 98", & 103" kits are available through the CTO part #106-5836. |
