S&S Cycle - S&S Performance Parts 2025 L - Volume 67

1999-'06

www.sscycle.com

Fitment • 1999–'06 Harley-Davidson® big twins—Balanced and unbalanced models • S&S T-Series Engine and Hot Set Up Kit® replacement flywheels Features and Benefits • Heat-treated 4140 material is harder and 114% stronger than stock • Harder material, no thrust washers required—Where stock flywheels have thrust washers, S&S flywheels have steel gripping the crankpin • Larger 1 671" diameter crankpin—increased contact area and tighter press fit for a stronger joint No welding required! • Integral mainshafts —eliminates two potential points of weakness • Consistent balance and precision machining—Truer flywheels and less vibration • Reduced mainshaft deflection at high rpm—less vibration, reduced piston and rod side thrusting, prevents oil pump damage, fully compatible with gear drive cams • Capable of higher rpm—More available power!

1 -2017-UP 2- 2007-'17 3 -1999-'06 4 -1984-'99 5 -1936-'84 6 -XL-RA1250 7 -BELTS & GASKETS 8 -TOOLS 9 -WARRANTY 10 -APPENDIX

320-0460

Flywheel Assemblies For 1999–’06 Harley-Davidson® Big Twins

1999–2006 HD® big twin models (EXCEPT 2006 DYNA® MODELS)

2006 HD® Dyna® models

Sprocket Bearing Race

Engine Displacement

Stroke

Total Piston Weight

Total Piston Weight

TC 88®

TC 88B™

Part #

320-0402 USA 320-0403 USA

320-0396 USA 320-0397 USA

Yes*

1230

1230

–

88, 95, 97, 100 w/Stock or S&S® Pistons

4"

No

1230

1230

–

96, 103, CVO 103, 106 big bore, 110, 117 w/Stock or S&S® Pistons S&S® 106 Stroker**

Yes*

1035

320-0360

320-0354

1035

320-0350

43/8"

No

1035

320-0361

320-0355

1035

320-0351

41/2"

No No

1108 1035

320-0460 320-0417

320-0454

1108 1035

320-0450

S&S 111

4 1/8"

–

–

SE 120R (uses 7 575" length rods)† 45/8"

No

1035

–

–

1035

320-0523

S&S® 124 S&S® T143

45/8" 45/8"

No No

1035 1290

320-0475 320-0552 329-0002

320-0469

1035

320-0464

–

–

–

Special Order

Specify

Specify

Specify

329-0002

Specify

329-0002

Note: All S&S flywheel assemblies for 1999–'06 engines have connecting rods with 7.667” length and full width straight wristpin ends. *Flywheel assemblies supplied with sprocket shaft bearing race installed are compatible with stock roller style sprocket shaft bearings. Assemblies with no race require a Timken® sprocket shaft bearing. **41/2" stroke flywheels for 2006 Dyna® include 7.667" long connecting rods.

Trying to identify an S&S® Flywheel? page 10-4

† These flywheels are replacement flywheels for the SE 120R When installing these flywheels in a Harley-Davidson® case, they need to run the HD piston oiling jets— not the S&S® piston oiling jets. Engines with strokes over 4" may require S&S® piston oiling jets (p/n 31-2026) and piston to jet clearance notches in the piston skirt to avoid contact Main Bearing Note: Most S&S flywheel assemblies for 1999–'16 big twin engines are designed for use with Timken® sprocket shaft bearings They will fit directly in stock 1999–’02 Harley-Davidson® crankcases and in all S&S crankcases for 1999–'15 big twin engines, with no modifications However, stock 2003 and later engines use a roller type bearing for the sprocket shaft S&S does offer flywheel assemblies that are compatible with late roller style stock sprocket shaft bearings, but they are not recommended for very large, high performance engines S&S strongly recommends retrofitting 2003–'16 model crankcases to accept a Timken sprocket shaft bearing A Timken conversion sleeve such as Screamin' Eagle® #34822-08 or Jim's® #956 may be used A charging system spacer for 1999–'02 model year is also required If you choose not to convert your crankcases to a Timken sprocket shaft bearing, S&S flywheels may be used in 2003 and later engines by either purchasing the stock compatible flywheels or by installing Harley-Davidson® bearing kit #24004-03B when using S&S flywheels designed for Timken bearings This bearing kit adapts the S&S sprocket shaft so it is compatible with stock roller type bearings Verify that the bearing kit contains the 24604-00D or 24607-07 sprocket shaft bearing Do not use a 24604-00, 24604-00A, 24604-00B or 24604-00C bearing Please be advised that if this type of bearing is used, sprocket shaft bearing failure WILL NOT be covered under warranty

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