16500074 CNC Ported Heads offer a cost-effective approach to upgrading the performance of your motorcycle. The intake and exhaust ports are meticulously machined for smooth surfaces, improving the flow characteristics of air and fuel in order to provide enhanced performance. But it doesn't end there: the proven stock valves rest in reshaped valve seats to further improve flow rates. The combustion chambers have been machined for smooth surfaces and feature a blended radius on the bathtub edge to reduce detonation by eliminating hot spots and promoting improved combustion. The head gasket surface has been milled to maintain stock combustion chamber volume (59.9cc), which results in stock compression when used with Original Equipment pistons. Compression can be increased with the installation of Screamin' Eagle high-compression pistons. Heads are assembled with Original Equipment valves and high-performance valve springs that support cams with lift up to.585". All EFI models require ECM calibration (priced separately). For race application only.
incl. VAT
Chapter members save 15% · Sign in for member pricing
Usually dispatched within 3 working days
Authorised
Iron City Dealer
14-Day Returns
Easy & hassle-free
Secure Checkout
256-bit encryption
Free UK Delivery
On orders over £100
Specifications
- Brand
- Harley-Davidson Accessories
- Part Number
- 16500074
- OEM Reference
- —
- Pack Quantity
- Each
- Category
- Big Bore Kits
- VAT Rate
- 20%
About This Product
CNC Ported Heads offer a cost-effective approach to upgrading the performance of your motorcycle. The intake and exhaust ports are meticulously machined for smooth surfaces, improving the flow characteristics of air and fuel in order to provide enhanced performance. But it doesn't end there: the proven stock valves rest in reshaped valve seats to further improve flow rates. The combustion chambers have been machined for smooth surfaces and feature a blended radius on the bathtub edge to reduce detonation by eliminating hot spots and promoting improved combustion. The head gasket surface has been milled to maintain stock combustion chamber volume (59.9cc), which results in stock compression when used with Original Equipment pistons. Compression can be increased with the installation of Screamin' Eagle high-compression pistons. Heads are assembled with Original Equipment valves and high-performance valve springs that support cams with lift up to.585". All EFI models require ECM calibration (priced separately). For race application only.
Manufacturer part number: 16500074.
Fitment
16 models Sportster 16 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2007–2020 | SPORTSTER 1200 CUSTOM (XL1200C) XL1200C |
| Harley-Davidson | 2008–2013 | SPORTSTER 1200 CUSTOM ANV (XL1200C ANV) XL1200C ANV |
| Harley-Davidson | 2013–2016 | SPORTSTER 1200 CUSTOM LIMITED A (XL1200CA) XL1200CA |
| Harley-Davidson | 2013–2017 | SPORTSTER 1200 CUSTOM LIMITED B (XL1200CB) XL1200CB |
| Harley-Davidson | 2011–2016 | SPORTSTER 1200 CUSTOM (H-D1) (XL1200CP) XL1200CP |
| Harley-Davidson | 2016–2020 | SPORTSTER 1200 ROADSTER (XL1200CX) XL1200CX |
| Harley-Davidson | 2007–2011 | SPORTSTER 1200 LOW (XL1200L) XL1200L |
| Harley-Davidson | 2008 | SPORTSTER 1200 LOW ANV (XL1200L ANV) XL1200L ANV |
| Harley-Davidson | 2007–2012 | NIGHTSTER (XL1200N) XL1200N |
| Harley-Davidson | 2018–2021 | SPORTSTER IRON 1200 (XL1200NS) XL1200NS |
| Harley-Davidson | 2007–2009 | SPORTSTER 1200R (XL1200R) XL1200R |
| Harley-Davidson | 2014–2020 | SUPERLOW 1200T (XL1200T) XL1200T |
| Harley-Davidson | 2012–2016 | SEVENTY-TWO (XL1200V) XL1200V |
| Harley-Davidson | 2010–2022 | FORTY-EIGHT (XL1200X) XL1200X |
| Harley-Davidson | 2018 | SPORTSTER FORTY-EIGHT ANNIVERSARY (XL1200X ANX) XL1200X ANX |
| Harley-Davidson | 2018–2020 | SPORTSTER FORTY-EIGHT SPECIAL (XL1200XS) XL1200XS |
Related Products
View all →
Harley-Davidson Accessories
These pistons were developed specifically for the Screamin' Eagle Milwaukee-Eight 119CI and 122CI Stage III kits. They increase the compression of the engine and, in combination with these kits, provide an impressive increase in torque and power. Replacement pistons for '17-later Milwaukee-Eight models equipped with Screamin' Eagle 107CI to 119CI Stage III kits. Forged from high-strength aluminum. Precision-manufactured with coated skirts for a tightly toleranced fit and quieter operation. The complete set includes two pistons, rings, wrist pins and clips.
Harley-Davidson Accessories
4.060" Standard Bore. Forged from high-strength aluminum, these 10.5 to 1 ratio pistons feature nickel-plated surfaces for enhanced durability, and a special Teflon coating for improved wear-resistance required for racing applications. These pistons include Titanium SST rings to withstand the stresses seen in racing. Complete kit includes pistons, rings, wrist pins, and clips.
Harley-Davidson Accessories
3-7/8" Standard Bore. These Flat-Top Cast Pistons are designed for use with 3-7/8" Big Bore performance cylinders (1550). Kit includes rings, clips and pins.
Harley-Davidson Accessories
Make your Iron 883 roar. This complete conversion kit will alter the personality of your 883-equipped Sportster model.
More from Harley-Davidson Accessories
View all →
Who are we? Leeds Harley-Davidson - Iron City Motorcycles
This product is fulfilled by Iron City Motorcycles, Leeds' authorised Harley-Davidson® dealer, serving the UK with a full range of Genuine Motorclothes®, dealer merchandise, and official Harley-Davidson parts & accessories — available for UK and international delivery.
From OEM Parts to retro lifestyle wear to aftermarket stockits we have what you need to keep you riding all year round.
Use our official OEM parts finder to browse our full Genuine Harley-Davidson® Parts and our associated approved aftermarket catalogues.