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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 - £1170

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

Package Two - £1630

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

Package Three - £1645

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

Package Four - £2105

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 - £1095

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

Package Two - £1495

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

Package Three - £1555

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

Package Four - £1955

Fit 1275 kit, conversion head work and performance cams.

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

A 1275 Sportster engine with cams and head work is a long way from a stock 883 in terms of torque and horsepower. With this in mind it is essential that the new build be dyno tuned. A Stage 1 download will not work at this performance level and could cause serious engine damage. I use nothing but the Power Vision for tuning and can offer the dyno tune as part of the build package. Another consideration when planning a 1275 build is a replacement clutch such as the Energy One BTX-11 extra plate clutch which I keep on the shelf specifically for these conversions. A stock Sportster clutch will not last very long once you start to use the huge torque increase that the 1275 conversion with cams and head work brings.

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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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