In stock

Drag Specialties Piston — Twin Cam

Drag Specialties · #0911-0021 · Top End / Engine

OEM quality cast aluminum alloy construction
Some fitments feature pistons with a coating that extends piston life, reduces friction and allows for cooler running engines
Ideal for OEM replacement
Economical with great performance, all in one package
Kits include two pistons, wrist pins and clips

$151.53

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

Shop all Drag Specialties
Everything we carry from Drag Specialties →

Description & features6 features

OEM quality cast aluminum alloy construction
Some fitments feature pistons with a coating that extends piston life, reduces friction and allows for cooler running engines
Ideal for OEM replacement
Economical with great performance, all in one package
Kits include two pistons, wrist pins and clips
Accept OEM or Hastings rings (order separately)

Specifications11 specs

Bore Size: 3.875"
Bore - Oversize: Standard
Piston Diameter: 3.875"
Piston Material: Aluminum
Stroke Length: 4-3/8"
Compression Ratio: 9.6:1
Riding Style: Street
Units: Kit
Shipping weight: 2.11 lb
Package size: 8.4 × 5 × 4.5 in
Country of origin: Taiwan

Fitment41 models · Harley-Davidson

Harley-Davidson41 models

FLD Switchback2012–2016
FLHR Road King2007–2016
FLHRC Road King Classic2007–2013
FLHRS Road King Custom2007
FLHT Electra Glide Standard2007–2009
FLHTC Electra Glide Classic2007–2013
FLHTCU Electra Glide Ultra Classic2007–2016
FLHTCUL Electra Glide Ultra Classic Low2015–2016
FLHTCUTG Tri Glide Ultra2009–2016
FLHTK Ultra Limited2010–2016
FLHTKL Ultra Limited Low2015–2016
FLHX Street Glide2007–2016
FLHXS Street Glide Special2014–2016
FLHXXX Street Glide Trike2010–2011
FLRT Freewheeler2015–2016
FLS Softail Slim2012–2017
FLSTC Heritage Softail Classic2007–2017
FLSTF Fat Boy2007–2017
FLSTFB Fat Boy Lo2010–2016
FLSTN Softail Deluxe2007–2017
FLSTSB Cross Bones2008–2011
FLSTSC Softail Springer Classic2007
FLTR Road Glide2007–2010, 2016
FLTRU Road Glide Ultra2011–2013, 2016
FLTRX Road Glide2015
FLTRX Road Glide Custom2011–2013
FLTRXS Road Glide Special2015–2016
FXCW Rocker2008–2009
FXCWC Rocker C2008–2011
FXD Dyna Super Glide2007–2010
FXDB Street Bob2007–2017
FXDC Super Glide Custom2007–2014
FXDF Fat Bob2008–2017
FXDL Dyna Low Rider2007–2009, 2014–2017
FXDWG Dyna Wide Glide2007–2008, 2010–2017
FXS Blackline2011–2013
FXSB Breakout2013–2017
FXST Softail Standard2007
FXSTB Night Train2007–2009
FXSTC Softail Custom2007–2010
FXSTD Softail Deuce2007

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 numbersOEM cross-reference

Salto part #: 0911-0021
Replaces OEM #: 21989-07

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 Drag Specialties?: Yes. It’s new and genuine, straight from Salto.