In stock

S&S Cycle 96" Sidewinder® — 3.625" Big Bore — Stroker Kit — Wrinkle Black — Evolution Big Twin

S&S Cycle · #0903-1258 · Complete Engines & Rebuild Kits / Engine

Kit includes standard flywheel assembly, 3.625" Sidewinder® stroker big bore cylinder, 9.75:1 compression ratio pistons, rings and gaskets
Flywheel assembly is complete with S&S heavy duty connecting rods and mainshafts, head gaskets, base gaskets, and exhaust gaskets
Makes stock 80" displacement into 96" displacement
Made In the USA
Does not include manifold, pushrods, or pushrod clips.

$2879.95

In stock. Ships in 2–4 business days · free shipping over $150.

Can’t ship to California.

Questions? Call the shop: 801-361-3010

Real shop · real humans · 1231 N 1300 W Ste A, Centerville, UT 84014

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Description & features7 features

Kit includes standard flywheel assembly, 3.625" Sidewinder® stroker big bore cylinder, 9.75:1 compression ratio pistons, rings and gaskets
Flywheel assembly is complete with S&S heavy duty connecting rods and mainshafts, head gaskets, base gaskets, and exhaust gaskets
Makes stock 80" displacement into 96" displacement
Made In the USA
Does not include manifold, pushrods, or pushrod clips.
'77-'89 style pinion gear and oil pump drive gears must be used when installing S&S flywheels in '90-'99 engines.
Cases must be bored to accept 3.625" bore cylinders, and a minor crankcase clearancing operation for the crankpin nut must be performed.

Specifications13 specs

Color/Finish: Wrinkle Black
Compression Ratio: 9.75:1
Riding Style: Street
Units: Kit
Model: Sidewinder
Style: Big Bore
Stroke Length: 4.625"
Bore Size: 3.625"
Displacement: 96"
Type: Engine
Shipping weight: 69.7 lb
Package size: 27.2 × 20.1 × 12.5 in
Country of origin: USA

Fitment47 models · Harley-Davidson

Harley-Davidson47 models

Electra Glide Standard FLHT1985
Electra Glide Ultra Classic FLHTCU1998
FLHR Road King1994–1998
FLHS Electra Glide Sport1987–1993
FLHT Electra Glide Standard1986–1987, 1995–1998
FLHTC Electra Glide Classic1984–1998
FLHTCU Electra Glide Ultra Classic1989–1997
FLST Heritage Softail1986–1990
FLSTC Heritage Softail Classic1988–1999
FLSTF Fat Boy1990–1999
FLSTN Heritage Softail Nostalgia1993
FLSTN Heritage Softail Special1994–1996
FLSTS Heritage Springer1997–1999
FLTC Tour Glide Classic1984–1993
FLTCU Tour Glide Ultra Classic1989–1995
FLTR Road Glide1998
FXD Dyna Super Glide1995–1998
FXDB-D Dyna Glide Daytona1992
FXDC Super Glide Custom1992
FXDL Dyna Low Rider1993–1998
FXDS-Conv Dyna Convertible1995–1998
FXDWG Dyna Wide Glide1993–1998
FXEF Fat Bob1985
FXLR Low Rider Custom1987–1994
FXR Super Glide II1986–1994
FXR21999
FXR31999
FXR42000
FXRC Low Rider Chrome1985, 1987
FXRD Sport Glide Grand Touring1986
FXRDG Disc Glide1984
FXRS Low Glide1984–1988, 1991–1992
FXRS-Conv Low Rider Sport Convertible1990–1993
FXRS-SP Low Rider Sport1988–1993
FXRT Sport Glide1984–1992
FXSB Low Rider - Belt1985
FXST Softail Standard1984–1993
FXSTB Night Train1999
FXSTC Softail Custom1986–1999
FXSTS Springer Softail1988–1999
FXSTSB Bad Boy1995–1997
FXWG Wide Glide1985–1986
Low Rider FXRS1989–1990, 1993
Softail Heritage Classic FLSTC1987
Sport Glide FXRT1993
Tour Glide Classic FLTC1994
Tour Glide Ultra Classic FLTCU1996

Fitment comes from the catalog data for this part. Double-check your year, model and trim before you order — or call the counter at 801-361-3010 and we’ll check it with you.

Part numbers

Salto part #: 0903-1258
S&S Cycle part #: 91-7661

Shipping

In stock. Ships in 2–4 business days by ground.

Ground shipping is $14.95, free on orders over $150. Stock is checked again before your card is charged.

California: this part can’t ship to a California address.

Questions4 answers

Is it in stock?: Yes — it’s in stock right now. We check again the moment you order, before anything is charged.
How fast will it get to me?: Usually 2–4 business days by ground.
Will it fit my machine?: It’s listed for the models in the Fitment section above. Not sure about your trim or year? Call the counter at 801-361-3010 and we’ll check it with you.
Is this genuine S&S Cycle?: Yes. It’s new and genuine, straight from Salto — S&S Cycle part #91-7661.