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Fuel Moto Fuel Moto SE120R/ST to 124" Big Bore Kit

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The Fuel Moto 124" big bore kit fits all SE 120R & SE 120ST engines and takes these popular Harley crate engines from mild to wild with NO case boring required. The Fuel Moto 124" kit offers substantial gains in horsepower with huge gains in torque with increased reliability over the SE components.

The Fuel Moto 124" kit includes the following:

  • Forged piston kit, available in 11.0, 11.5 or 12.0:1 compression
  • Precision bored cylinders (please note that we have a limited quantity of 120R cylinders for core exchange)
  • Wood TW-9B cams (other options available, contact us for details)
  • Wood Alpha Directional lifters
  • Fuel Moto Quick Install Pushrods
  • Complete premium gasket kit with inner cam bearings

Retail Price: $1399.00 Complete kit
Professional turn key Installation: $2298.00 ($3178.00 with FM CNC head service)* at our location including the complete kit, break in & dyno tune on our state of the art dyno. (*does not include required peripheral such as EFI tuning device, exhaust system, throttle body, or other associated parts such as oil & filter)

Fuel Moto also offers package deals for the 107" kit bundled along with tuning components, exhaust systems, and air cleaners. We have a wide range of 107" calibrations available for Dynojet Power Vision we can supply with our kits.

Application List



  • FMS-124-X
  • FMS-124-X
  • Fuel Moto
  • New