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S&S Super Stock Cylinder Heads 89cc Black

(1 review)

Item: 342422-542777

$1616.36

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Description Fitment Reviews Q&A

S&S Super Stock Cylinder Heads 89cc Black

S&S Super Stock heads intended for larger displacement engines, S&S 89cc heads have a whopping 264cfm flow rate (compared to 182cfm for stock HD heads), larger valves and .640 inch lift valve springs. S&S recommends Easy Start cams or manual or electric compressions release system in order to maintain reliable engine starting on high compression applications.

  • Stock and 3-7/8 inch bore
  • Heads can be decked up to .060 inch to increase compression
  • 2.000 inch intake and 1.605 inch exhaust valves
  • S&S .640 inch lift valve springs
  • Stock Harley-Davidson rocker boxes can be retained if S&S manual compression release or S&S Easy Start cams are used.
  • Must use S&S valve cover gasket part #90-4124 with stock rocker covers
  • Sold in pairs
  • Made in the USA

Product Note: If 89cc heads are used with OEM pistons, valve reliefs must be machined up to 0.60" to increase compression due to larger valve size. Valve-to-piston clearance must be checked on decked heads. With OEM piston, valve pockets need remachining. Moderate valve spring force in S&S Super Stock heads allows using camshafts designed for the OEM style chain cam drive system. Larger intake manifold recommended to supplement heads in order to let them flow to their full potential.

Specification Details
Color Black Wrinkle
Country of Origin USA
Cylinder Head Volume 89cc
Engine Type Twin Cam
Finish Powder Coated
Material Aluminum
Quantity 2

Vehicle Fitment

Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

Harley Davidson
  • FLHR Road King 1999-2005
  • FLHRCI Road King Classic 1999-2005
  • FLHRI Road King 1999-2005
  • FLHRS Road King Custom 2004-2005
  • FLHRSI Road King Custom 2004-2005
  • FLHT Electra Glide Standard 1999-2005
  • FLHTC Electra Glide Classic 1999-2005
  • FLHTCI Electra Glide Classic 1999-2005
  • FLHTCU Ultra Classic Electra Glide 2000-2005
  • FLHTCUI Ultra Classic Electra Glide 1999-2005
  • FLHTI Electra Glide Standard 2003-2005
  • FLSTC Heritage Softail Classic 2001-2005
  • FLSTCI Heritage Softail Classic 2001-2005
  • FLSTF Softail Fat Boy 2000-2005
  • FLSTFI Softail Fat Boy 2001-2005
  • FLSTN Softail Deluxe 2005
  • FLSTNI Softail Deluxe 2005
  • FLSTS Heritage Springer Softail 2000-2003
  • FLSTSC Softail Springer Classic 2005
  • FLSTSCI Softail Springer Classic 2005
  • FLSTSI Heritage Springer Softail 2001-2003
  • FLTR Road Glide 2000-2002
  • FLTRI Road Glide 2000-2005
  • FXD Dyna Super Glide 1999-2005
  • FXDC Dyna Super Glide Custom 2005
  • FXDCI Dyna Super Glide Custom 2005
  • FXDI Dyna Super Glide 2004-2005
  • FXDL Dyna Low Rider 1999-2005
  • FXDLI Dyna Low Rider 2004-2005
  • FXDS-CONV Dyna Convertible 1999-2000
  • FXDWG Dyna Wide Glide 1999-2005
  • FXDWGI Dyna Wide Glide 2004-2005
  • FXDX Dyna Super Glide Sport 1999-2005
  • FXDXI Dyna Super Glide Sport 2004-2005
  • FXDXT Dyna Super Glide T-Sport 2001-2003
  • FXST Softail Standard 2000-2005
  • FXSTB Softail Night Train 2000-2005
  • FXSTBI Softail Night Train 2001-2005
  • FXSTD Softail Deuce 2000-2005
  • FXSTDI Softail Deuce 2001-2005
  • FXSTI Softail Standard 2001-2005
  • FXSTS Springer Softail 2000-2005
  • FXSTSI Springer Softail 2001-2005

Customer Reviews

Wish I could send you a picture

By   on  Verified Purchaser

Not only did I get the 89 CC super stock heads I got the 585 complete Gear Drive and cam chest kit and the 100 in Big Bore Kit piston and rings very pleased with everything. can't stop smiling ear to ear. I would recommend all to anyone. Parts come complete with installation instructions. First time I ever went into the Harley motor. Built plenty of high-performance car engines, it was a breeze with your instructions.

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Questions & Answers

Is it a simple plug and play for a 2014 sgs 103

I've done al of the other things. Intake, exaghast, cams, ignition and wires and plugs, clutch. I want to install heads and pop up pistons same size but more compression. Any thought or advise should be welcome. Thanks. Mark Dixon.

There really isn't much to it, for fitting these to your bike, that is. Just swap the OEM heads out, check the usual clearances &etc., and you're good. You'll want to be careful on piston choice with regard to cylinder head clearance, and that's explained in the instructions. And of course, you want to adjust fueling to suit, but given the other work you've had done already, I'm confident you understand that. Other than that, these heads will be a nice addition to your current setup, that's for sure!

By Tom

What size are the exhaust valves? Any other S&S parts required other than rocker cover gaskets? 2000 FXDS.

The 1999-2005 twin cam heads that will fit a 2000 Harley Davidson FXDS-CONV Dyna Super Glide Convertible have 2.000" intake and 1.605" exhaust valves. If you are using stock pistons please check piston to valve clearance as valve relief pockets are often needed due to the large diameter valves, deeper pockets would be required for thinner head gaskets. Any required gaskets are included with the kit, save for the head gaskets. The reason those are not included is to allow for customizing of head gasket thickness to fine tune your compression ratio.

By Staff

Are they wrinkle black?

Yes! If you were to choose the black wrinkle color option, the S&S cylinder heads you will receive a set of cylinder heads with a powder-coated wrinkle black finish.

By Staff

Do these have provisions for manual compression releases?

All S&S cylinder heads for Twin Cam 88 with 89cc combustion chambers are machined to accept the S&S compression release.

By Staff

Does this kit come with both cylinder heads?

Yes, S&S 89cc Superstock cylinder heads come with both, the front and rear cylinder heads. You only need to order one kit to completely outfit your engine.

By Staff

Do these heads include the four long head bolts

Yes, each kit ships with four head bolts for securing the Super Stock heads to their cylinders.

By Staff

R these heads a bathtub style or more like a hemi style combustion chamber. Hard to tell from pics.

S&S Superstock cylinder heads use a Hemi-style combustion chamber.

By Staff

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