In stock

S&S Cycle Big Bore Forged Piston Kit — 3.937" Bore — 98" Twin Cam — Standard

S&S Cycle · #0910-4524 · Bottom End / Engine

Pistons are compatible with stock rods with tapered wristpin ends
Stock cylinders may be bored to accommodate larger piston
Bore cylinders to nominal diameter +/- 0.0005" for correct clearance

$514.95

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

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 & features3 features

For use on '99-'06 Twin Cam models with S&S 98" big bore kits.

Works with 4.000" stroke flywheels to convert 88" to 98" displacement with 10.3:1 compression ratio with stock heads.

Deck height is 1.265".

Pistons are compatible with stock rods with tapered wristpin ends
Stock cylinders may be bored to accommodate larger piston
Bore cylinders to nominal diameter +/- 0.0005" for correct clearance

Specifications12 specs

Bore Size: 3.937"
Stroke Length: 4"
Style: Big Bore
Bore - Oversize: Standard
Riding Style: Street
Compression Ratio: 10.3:1
Displacement: 98"
Units: Kit
Piston Material: Forged
Shipping weight: 3.1 lb
Package size: 11.2 × 5.4 × 3.9 in
Country of origin: USA

Fitment66 models · Harley-Davidson

Harley-Davidson66 models

15th Anniversary Fat Boy FLSTF2005
Electra Glide Police FLHTPI1999–2006
Electra Glide Police FLHTP1999–2006
Electra Glide Standard EFI FLHTI2000, 2002
Electra Glide Ultra Classic FLHTCU1999–2006
FLHR Road King1999–2006
FLHRCI Road King Classic1999–2006
FLHRI Road King2000–2006
FLHRS Road King Custom2004–2006
FLHRSEI Screamin Eagle Road King2002
FLHRSEI2 Screamin Eagle Road King 22003
FLHRSI Road King Custom2004–2006
FLHT Electra Glide Standard1999–2006
FLHTC Electra Glide Classic1999–2006
FLHTCI Electra Glide Classic1999–2006
FLHTCSE Screamin Eagle Electra Glide2004
FLHTCSE2 Screamin Eagle Electra Glide 22005
FLHTCUI Electra Glide Ultra Classic1999–2006
FLHTCUSE Screamin Eagle Ultra Classic Electra Glide2006
FLHTI Electra Glide Standard2003–2006
FLHX Street Glide2006
FLHXI Street Glide2006
FLST Heritage Softail2006
FLSTC Heritage Softail Classic2000–2006
FLSTCI Heritage Softail Classic2001–2006
FLSTF Fat Boy2000–2006
FLSTFI Fat Boy2001–2006
FLSTFSE Screamin Eagle Fat Boy2005–2006
FLSTI Heritage Softail2006
FLSTN Softail Deluxe2005–2006
FLSTNI Softail Deluxe2005–2006
FLSTS Heritage Springer2000–2003
FLSTSC Softail Springer Classic2005–2006
FLSTSCI Softail Springer Classic2005–2006
FLSTSI Heritage Springer2001–2003
FLTR Road Glide1999–2006
FLTRI Road Glide1999–2006
FLTRSEI Screamin Eagle Road Glide2000
FLTRSEI2 Screamin Eagle Road Glide 22001
FXD Dyna Super Glide1999–2006
FXDB Street Bob2006
FXDC Super Glide Custom2005
FXDCI Super Glide Custom2005–2006
FXDI Dyna Super Glide2004–2006
FXDI35 Dyna 35th Anniversary Super Glide2006
FXDL Dyna Low Rider1999–2006
FXDLI Dyna Low Rider2004–2006
FXDS-Conv Dyna Convertible1999–2000
FXDWG Dyna Wide Glide1999–2006
FXDWG2 CVO Dyna Wide Glide2001
FXDWG3 CVO Dyna Wide Glide2002
FXDWGI Dyna Wide Glide2004–2006
FXDX Dyna Super Glide Sport1999–2005
FXDXI Dyna Super Glide Sport2004–2005
FXDXT Dyna Super Glide T-Sport2001–2003
FXST Softail Standard2000–2006
FXSTB Night Train2000–2006
FXSTBI Night Train2001–2006
FXSTD Softail Deuce2000–2006
FXSTDI Softail Deuce2001–2006
FXSTDSE Screamin Eagle Softail Deuce2003–2004
FXSTI Softail Standard2001–2006
FXSTS Springer Softail2000–2006
FXSTSI Springer Softail2001–2006
Road King EFI FLHR1999
Wide Glide EFI FXDWGI2000, 2002–2003

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 #: 0910-4524
S&S Cycle part #: 920-0101

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.

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 #920-0101.