S&S Cycle

S&S Cycle Flywheel Assembly

SKU: SS320-0598
(0)
S&S Cycle Flywheel Assembly - 4-3/8" Stroke
S&S Cycle Flywheel Assembly - 4-1/4"
S&S Cycle Flywheel Assembly - 4-250" Stroke
S&S Cycle Flywheel Assembly
S&S Cycle Flywheel Assembly - 4.250" Stroke
S&S Cycle Flywheel Assembly - 4.625" Stroke
S&S Cycle Flywheel Assembly - 4-3/8" Stroke
S&S Cycle Flywheel Assembly - 4-1/4"
S&S Cycle Flywheel Assembly - 4-250" Stroke
S&S Cycle Flywheel Assembly
S&S Cycle Flywheel Assembly - 4.250" Stroke
S&S Cycle Flywheel Assembly - 4.625" Stroke
S&S Cycle

S&S Cycle Flywheel Assembly

In stock
SKU: SS320-0598
(0)
$1,995.95 Add to Cart to See Pricing

Got questions?
Feel free to contact us

Perfect for gear drive camshafts

Features

  • Consistent balance and precision machining
  • Balance gear is installed for easy installation
  • Strong assembly eliminates need to weld crankpin
  • Heat treated 4140 material is harder and twice as stong as stock
  • Connecting rods are designed with Finite Element Analysis (FEA) to eliminate weak spots
  • Includes flywheel, crankpin and connecting rods
  • Made in the USA
  • Not recommended for compression ratios higher that 10.0:1 for Tri Glide or other three wheel models (including conversion).
  • Displacement is with S&S cylinders and pistons.
  • Made of high-strength forged steel and designed for stock and high-performance custom applications
  • Special keyed 6° large diameter tapered sprocket shaft that provides more contact area for increased strength
  • Standard S&S tapered crankpin and pinion shaft are used for ease-of-service
  • 8-1/2" diameter with 4-1/4" or 4-5/8" stroke
  • Kits come fully assembled, trued and balanced to stock H-D 80" or 96" pistons
  • Include flywheel, crankpin and connecting rods
  • '90-'99 application will require pinion shaft conversion kit.
  • Flywheels are CNC machined from heat-treated, closed die, steel forgings, and are stronger than cast iron or late style steel flywheels
  • Replaces the original flywheels in S&S 80" SH80 engines with alternator style crankcases for '70-'84 Big Twin
  • Can be used to overhaul an S&S engine or to build a custom engine using similar crankcases and pistons
  • Features 4-1/4" stroke, 8-1/2" diameter flywheels, and 7.440" connecting rods
  • May also be used in 88" engines with 3-5/8" bore cylinders

Specifications

  • Available size options: 4-3/8" Stroke, 4-250" Stroke, 4.625" Stroke, 4-1/4", 4-1/2" Stroke, 4.250" Stroke
  • Manufacturer part numbers: 320-0601, 32-2239, 32-2230, 32-2235, 320-0598, 32-2145

Note: WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Please confirm your exact model and year in the fitment chart before ordering.

 

YearsMakeModels
2023Harley-DavidsonFLHFB Electra Glide Highway King, FXBR Breakout 117
2022-2023Harley-DavidsonFLTRKSE CVO Road Glide Limited, FLTRXST Road Glide ST, FLHXST Street Glide ST, FXLRS Low Rider S 117, FXLRST Low Rider ST 117
2021-2023Harley-DavidsonFXBBS Street Bob 114
2020-2023Harley-DavidsonFLTRK Road Glide Limited, FXST Softail Standard 107
2018-2023Harley-DavidsonFLTRXSE CVO Road Glide, FLFBS Fat Boy 114, FLHCS Heritage Classic 114, FXFBS Fat Bob 114
2017-2023Harley-DavidsonFLTRX Road Glide, FLTRXS Road Glide Special, FLHX Street Glide, FLHXS Street Glide Special, FLHXSE CVO Street Glide, FLHRXS Road King Special, Road King Police FLHP, Electra Glide Police FLHTPI, FLHTK Ultra Limited
2022Harley-DavidsonSoftail Street Bob FXBB, FXRST Low Rider El Diablo 117
1994-1998, 2017-2022Harley-DavidsonFLHR Road King
1986-1987, 1995-1998, 2019-2022Harley-DavidsonFLHT Electra Glide Standard
2021Harley-DavidsonFLH Electra Glide Revival
2020-2021Harley-DavidsonFXLRS Low Rider S 114
2018-2021Harley-DavidsonFLHC Heritage Classic 107, FLSB Sport Glide 107, FLSL Softail Slim 107
2017-2021Harley-DavidsonFLHTKSE CVO Limited
2019-2020Harley-DavidsonFXDRS FXDR 114
2018-2020Harley-DavidsonFLDE Deluxe 107, FXBB Street Bob 107, FXBRS Breakout 114, FXLR Low Rider 107
2018-2019Harley-DavidsonFLFB Fat Boy 107, FXBR Breakout 107, FXFB Fat Bob 107
2017-2019Harley-DavidsonFLTRU Road Glide Ultra, FLHTKL Ultra Limited Low
1989-1997, 2017-2019Harley-DavidsonFLHTCU Electra Glide Ultra Classic
2000Harley-DavidsonFXR4
1999Harley-DavidsonFXSTB Night Train, FXR2, FXR3
1997-1999Harley-DavidsonFLSTS Heritage Springer
1990-1999Harley-DavidsonFLSTF Fat Boy
1988-1999Harley-DavidsonFLSTC Heritage Softail Classic, FXSTS Springer Softail
1986-1999Harley-DavidsonFXSTC Softail Custom
1984-1993, 1999Harley-DavidsonFXST Softail Standard
1998Harley-DavidsonFLTR Road Glide, FLTRI Road Glide, FLHRCI Road King Classic, Road King EFI FLHR, Electra Glide Ultra Classic FLHTCU
1995-1998Harley-DavidsonFLHTCI Electra Glide Classic, FLHTCUI Electra Glide Ultra Classic, FXD Dyna Super Glide, FXDS-Conv Dyna Convertible
1993-1998Harley-DavidsonFXDL Dyna Low Rider, FXDWG Dyna Wide Glide
1983-1998Harley-DavidsonFLHTC Electra Glide Classic
1996-1997Harley-DavidsonFLHRI Road King
1995-1997Harley-DavidsonFXSTSB Bad Boy
1996Harley-DavidsonTour Glide Ultra Classic FLTCU
1994-1996Harley-DavidsonFLSTN Heritage Softail Special
1989-1995Harley-DavidsonFLTCU Tour Glide Ultra Classic
1987-1994Harley-DavidsonFXLR Low Rider Custom
1982-1983, 1986-1994Harley-DavidsonFXR Super Glide II
1980, 1994Harley-DavidsonTour Glide Classic FLTC
1993Harley-DavidsonFLSTN Heritage Softail Nostalgia, Sport Glide FXRT
1990-1993Harley-DavidsonFXRS-Conv Low Rider Sport Convertible
1989-1990, 1993Harley-DavidsonLow Rider FXRS
1988-1993Harley-DavidsonFXRS-SP Low Rider Sport
1981-1993Harley-DavidsonFLTC Tour Glide Classic
1980-1982, 1987-1993Harley-DavidsonFLHS Electra Glide Sport
1992Harley-DavidsonFXDB-D Dyna Glide Daytona, FXDC Super Glide Custom
1984-1988, 1991-1992Harley-DavidsonFXRS Low Glide
1983-1992Harley-DavidsonFXRT Sport Glide
1986-1990Harley-DavidsonFLST Heritage Softail
1987Harley-DavidsonSoftail Heritage Classic FLSTC
1985, 1987Harley-DavidsonFXRC Low Rider Chrome
1986Harley-DavidsonFXRD Sport Glide Grand Touring
1980-1986Harley-DavidsonFXWG Wide Glide
1983, 1985Harley-DavidsonElectra Glide Standard FLHT
1983-1985Harley-DavidsonFXSB Low Rider - Belt
1979-1981, 1985Harley-DavidsonFXEF Fat Bob
1984Harley-DavidsonFLHX Electra Glide Special, FXRDG Disc Glide
1974-1978, 1981-1984Harley-DavidsonFXE Super Glide
1970-1984Harley-DavidsonFLH Electra Glide
1983Harley-DavidsonFXDG Disc Glide
1982-1983Harley-DavidsonSuper Glide II FXRS
1980-1983Harley-DavidsonFLT Tour Glide
1981-1982Harley-DavidsonElectra Glide Classic FLH
1980-1982Harley-DavidsonFXB Sturgis
1977-1982Harley-DavidsonFXS Low Rider
1981Harley-DavidsonElectra Glide Heritage FLH
1979-1980Harley-Davidson1200 Fat Bob FXEF, 1200 Super Glide FXE, Super Glide 80 FXE
1978-1980Harley-Davidson1200 Electra Glide FLH
1970-1980Harley-DavidsonElectra Glide FL
1979Harley-Davidson1200 Low Rider FXS
1971-1978Harley-DavidsonFX Super Glide
 
Product Title Store SKU MFR Part #
4-1/2" Stroke SS320-0598 320-0598
4-1/4" SS32-2235 32-2235
4-250" Stroke SS32-2239 32-2239
4-3/8" Stroke SS320-0601 320-0601
4.250" Stroke SS32-2145 32-2145
4.625" Stroke SS32-2230 32-2230

Bulk order

Variant Quantity Price Total
S&S Cycle Flywheel Assembly - 4-3/8" Stroke
4-1/2" Stroke SS320-0598 / 320-0598
$1,796.36
$1,995.95 $1,796.36
$0.00
$1,796.36
$1,995.95 $1,796.36
$0.00
S&S Cycle Flywheel Assembly - 4-1/4"
4-1/4" SS32-2235 / 32-2235
$1,436.36
$1,595.95 $1,436.36
$0.00
$1,436.36
$1,595.95 $1,436.36
$0.00
S&S Cycle Flywheel Assembly - 4-250" Stroke
4-250" Stroke SS32-2239 / 32-2239
$1,436.36
$1,595.95 $1,436.36
$0.00
$1,436.36
$1,595.95 $1,436.36
$0.00
S&S Cycle Flywheel Assembly - 4-3/8" Stroke
4-3/8" Stroke SS320-0601 / 320-0601
$1,796.36
$1,995.95 $1,796.36
$0.00
$1,796.36
$1,995.95 $1,796.36
$0.00
S&S Cycle Flywheel Assembly - 4.250" Stroke
4.250" Stroke SS32-2145 / 32-2145
$1,436.36
$1,595.95 $1,436.36
$0.00
$1,436.36
$1,595.95 $1,436.36
$0.00
S&S Cycle Flywheel Assembly - 4.625" Stroke
4.625" Stroke SS32-2230 / 32-2230
$1,436.36
$1,595.95 $1,436.36
$0.00
$1,436.36
$1,595.95 $1,436.36
$0.00
View cart
0 Total items
$0.00

Product subtotal