S&s Cycle 91cc Cylinder Heads For Harley Big Twins
S&s Cycle 91cc Cylinder Heads For Harley Big Twins
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Estimated delivery: Feb 06 - Feb 10
About this product
About this product
Upgrade your Harley-Davidson® big twin engine with S&S Cycle 91cc Super Stock® Cylinder Heads. Designed for optimal performance and compatibility, these cylinder heads are a must-have for enthusiasts seeking enhanced power and reliability.
Description
These S&S Cycle Super Stock® cylinder heads are specifically engineered for S&S® T-Series T2 long block engines and Harley-Davidson® big twins with S&S® 4.25" bore Hot Set Up kits installed. Featuring 2.000" intake and 1.605" exhaust valves, coupled with precisely engineered S&S® ports, these heads deliver an ample air supply to larger displacement motors. High-performance valve springs accommodate camshafts with lifts up to 0.650". They are designed to be compatible with stock rocker boxes, exhaust, and intake manifolds. The manifold mounting surface is machined to stock dimensions ensuring ease of installation. Built with pride in the USA, these cylinder heads offer a significant performance boost for your Harley-Davidson engine.
Features & highlights
- Designed for S&S® T-Series T2 long block engines and Harley-Davidson® big twins with 4.25" bore.
- 2.000" intake and 1.605" exhaust valves provide optimal airflow.
- S&S® high-performance valve springs allow camshafts with up to 0.650" lift.
- Compatible with stock rocker boxes, exhaust, and intake manifolds for easy installation.
- Manifold mounting surface is machined to stock dimensions.
- Proudly made in the USA.
- Increase horsepower and torque throughout the RPM range.
Technical specifications
- Brand: S&S Cycle
- Product Name: Cylinder Head Kit
- Displacement: 91cc
- Material: Aluminum
- Intake Valve Size: 2.000"
- Exhaust Valve Size: 1.605"
- Finish: Powder-Coated, Wrinkle Black
- Color: Black
Important to know
- A special manifold/throttle body is required for engines that are not stock height.
- Not machined for compression releases.
- Must use S&S valve cover gasket kit with stock rocker covers.
- Not compatible with '14-'16 FLHTK/FLHTKL, FLHTCUTG Twin-Cooled motors or '17-'20 touring models.
Shipping & Return
Shipping & Return
Free shipping to GLS parcel shop parcel box for purchases over DKK 1,000.
GLS home delivery costs DKK 59.
We do our best to ship your order as quickly as possible. All orders are generally packed within 24 hours on weekdays.
There is a 14-day return policy. Read more
Parts Denmark Info
Parts Denmark Info
Parts Denmark is a new webshop based in Denmark. We have a physical location you can visit (No showroom yet), and we have both email and phone support in our opening hours.
Our company info is:
Parts Denmark ApS
VAT: DK45974758
Dam Holme 11
3660 Stenløse, Denmark
hello@partsdenmark.com
+45 222 333 29
Best regards,
William Svendsen & Martin Høyer (Owners)
Specifications
S&S CYCLE
900-0349
Cylinder Head Kit
91 cc
Powder-Coated
Aluminum
Black
Pair


Who is behind Parts Denmark
Martin and William are the duo behind Parts Denmark — an unlikely but awesome combo of a tech-savvy young IT wizard and a seasoned motorcycle guru who’s seen (and fixed) it all. Together, we’ve built a team with big ambitions, plenty of passion, and a shared mission to create great things — side-by-side with you.

