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Ride in, ride out 1275cc power packages for 1991 to present Sportsters

The Sportster is the original Harley Davidson performance motorcycle which was first released way back in 1957. There have been many engineering advances since then and the modern day Evo Sportster engine encompasses the best modern technology which allows this engine to be taken to a serious performance level. Better pushrod geometry than the big twins and gear driven cams permit safer and higher RPM limits. In my opinion the world leaders in Sportster performance technology are Hammer Performance in the States. Dan Norlin and the team there have recently released their new steel lined 1275cc cylinders that come with CP forged pistons and they fit directly into the stock 1991 to present 883 and 1200 cases. I can now offer Sportster performance builds featuring these kits complete with cams and head work options.

2004-present Sportsters

Package One - £1140

Fit 1275 big bore kit retaining stock heads and stock cams.

Package Two - £1590

Fit 1275cc big bore kit and performance cams - no head work

Package Three - £1615

Fit 1275 kit and conversion head work, keeping stock cams.

Package Four - £2065

Fit 1275 kit, conversion head work and performance cams

  • 1275cc Big Bore Kit
  • 1275 Conversion Head Work
  • Andrews Cams
  • New Gaskets

1991-2003 Sportsters

Package One - £1065

Fit 1275 big bore kit retaining stock heads and stock cams.

Package Two - £1465

Fit 1275 kit and conversion head work, keeping stock cams.

Package Three - £1515

Fit 1275cc big bore kit and performance cams – no head work.

Package Four - £1915

Fit 1275 kit, conversion head work and performance cams.

  • 1275cc Big Bore Kit
  • 1275 Conversion Head Work
  • Andrews Cams
  • New Gaskets

You can see that there is a £75 difference in price between the pre 2004 and the 2004 onwards options that include head work. This is because the oversized valves that are used in the 883-1275 conversion head work package are currently only available with 5/16” stems. The 2004 to present heads have 7mm stem valves which means that the guides, retainers and collets have to be replaced. The 1275 kits are also £75 cheaper for the 1991-2003 models due to the cylinders having a smaller fin surface area.

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This is not a Harley Davidson website, nor is it endorsed or sponsored by Harley Davidson. Fast Lane Head Work Limited is not affiliated with Harley Davidson in any way. Any use of the words Harley Davidson, Harley, Twin Cam or any other words registered by Harley Davidson are used here solely for reference.

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Registered Company Address: 8 Albert Place, Aberdeen, AB25 1RG (not the workshop address)