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

XL / RA1250

Phone: 608-627-1497

Fitment • 1991-'03 Sportster models

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

Features And Benefits • CNC machined from heat-treated, closed die, steel forging • Stronger than cast iron or late style steel flywheels • 5-piece design—easily rebuilt with standard flywheel fixtures and tools

Kit Contents • Flywheels • Pinion shaft and sprocket shaft • Connecting rods

Replacement parts page 6-60

Replacement Flywheel Assemblies for Harley-Davidson® Sportster® Models Year Group Displacement Stroke

Flywheel Diameter

Part #

3 13/16 " (Stock)

1991–'03

1200cc (Stock)

77/8" (Stock)

320-0053 USA

Lightened flywheels are not recommended for Sportster models with solid mounted engines due to increased vibration and loss of low rpm torque. S&S pinion shafts for 1991–’03 Sportster® models are the splined 1986–’87 style. Pinion and oil pump drive gears in 1988–’03 models must be replaced with early style gears. Complete S&S Flywheel assemblies will fit up to 1999 model year engines. However, the flywheels are compatible with stock crankpins up to 1999 only. Stock stroke flywheels are balanced to stock weight pistons

Fitment • 1986–’87 Harley-Davidson® Sportster® models • S&S SB-Series engines • S&S crankcases for Sportster and Buell® models Features And Benefits • Accepts stock oil pressure sending switch • Machined for easy routing of an oil cooler • Seals off cam chest, providing a convenient place to spin on an oil filter

Billet Filter Mount For 1986–’87 Harley-Davidson® Sportster® Fitment

Part #

1986–’87 Harley-Davidson® Sportster® S&S SB-Series engines S&S crankcases for Sportster and Buell®

106-3134

6-39