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Fuel Moto M8 143" complete build

Please Call for Availability


The Fuel Moto M8 143 is a special all inclusive build we offer in-house only, it is not offered as a kit. This combination is designed as a full effort race type engine; it requires 100+ octane fuel and it is not a touring engine. This engine requires a very specific recipe of components and is offered professionally built, turn key. 


Fuel Moto 143 includes the following:

  • Darkhorse Crankworks rotating assembly; trued, balanced, welded crankshaft w/Carrillo H-beam rods, bore engine cases, heavy duty studs, balancer removed (requires 4.5" crankshaft - additional cost for 107" motors)
  • Full effort cylinder heads; oversize valves, extensive modifications & porting by Ward Performance
  • Custom pistons by CP Carrillo, special application sleeved cylinders 
  • Wood Performance camshaft, lifters, & valve springs
  • 64mm Throttle body, custom CNC porting by Ward Performance
  • Fuel Injectors, Air Cleaner assembly
  • S&S cam plate/oil pump, tappet cuffs, head bolts, rocker arm studs
  • Jackpot RTX full-length or Riot system
  • AIM SDR clutch & springs
  • Billet clutch basket
  • Chain drive conversion
  • Complete installation labor, dyno break in & comprehensive dyno tune

$14950.00 complete turn key build; including each of the components noted. Requires deposit to secure appointment, 50% down upon arrival, balance due when completed. Build time is approx 4-6 weeks.

Note this engine build is not emissions compliant or designed for street use; for off road - race use only. 


  • FMS-M8-143
  • FMS-M8-143
  • Fuel Moto
  • New


Shipping Information

  • Item Requires Shipping
  • 50.0 lbs.
  • W21.0000” x H14.0000” x L14.0000”
  • This item ships in its own box.