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

2007-'17

Phone: 608-627-1497

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

Fitment • 2007–'17 Harley-Davidson® big twins (except 2017 touring models)—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 • Available with full width wristpin connecting rods • 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!

320-0350

Flywheel Assemblies For 2007–2017 Harley-Davidson® Big Twin Models (Except 2017 Touring Models)

Balanced to Total Piston Weight (gms)

Harley-Davidson® Twin Cam 96®/103™

Harley-Davidson® Twin Cam 96B™/103B™

Rod WP End Style

Sprocket Bearing Race

Engine Displacement

Stroke

Yes**

320-0350 320-0351 320-0352 320-0353 320-0450 320-0407 320-0523 320-0464 320-0545 329-0002

320-0356 320-0357 320-0358 320-0359

96, 103, 106 big bore, 110, 117 w/S&S Pistons 96, 103, 110 w/Stock Pistons* USA

4 3/8"

1035

Straight

No

Yes**

4 3/8"

1035

Tapered*

No No No No No No

S&S 106 Stroker***

4 1/2" 4 1/8" 4 5/8" 4 5/8" 4 5/8"

1108 1035 1035 1035 1290

Straight Straight Straight Straight Straight Specify

– – –

S&S 111

SE 120R (uses 7 575" length rods)†

S&S 124

320-0471

S&S 143 (uses 7 800" length rods)

–

Special Order

Specify Specify

Specify

329-0002

*Stock pistons in 2007 and later engines require rods with tapered wristpin ends. Note: All S&S Flywheels for 2007 and later engines have 7.659” length connecting rods (except the SE120R & S&S 143, see chart). **Note: 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 include 7.667" long connecting rods.

† 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. Strokes longer than stock will require S&S Piston Oiler Set 2007–up stock rod length is 7 659" Main Bearing Note: Most S&S flywheel assemblies for 1999–'17 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-'17 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

Trying to identify an S&S® Flywheel? See Flywheel I.D. Chart - page 10-4

Replacement Parts page 2-92

2-65