2 Stroke vs. 4 Stroke

2 & 4 Stroke Complete Kits

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Parts & Accessories

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Mount Kit Only

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The choice between 2 or 4 stroke engine is dictated by personal choice, riding style, weight load and terrain. If your primary purpose is commuting, or require a faster top speed – you may be more interested in a 2-stroke. If you pull a trailer and/or anticipate cruising at slower speeds, you may be better suited with a 4-stroke engine.

2-Stroke Engines

Smoother running; faster speeds, lighter weight, runs cleaner at faster speeds.

  • Continuous cruising at slow speeds will cause more rapid carbon build-up, and require more frequent maintenance.
  • Requires gasoline, pre-mixed w/2-stroke oil before filling tanks but very little maintenance.
  • Clean spark arrestor and exhaust ports after a few thousand miles (the 1st time) -becomes less frequent after engine breaks in..
  • Only 3 moving parts.
  • 87 octane, or better, non-ethanol.gasoline (reference manual of your engine)

*** Never mix fuel rich even on break-in! Always mix 50 to 1 (One US gallon gasoline to 2.6 oz Two- stroke mixing oil). For Air cooled engines; synthetic blend – not straight synthetic oil.

4-Stroke Engines

A lot of low end torque at slower speeds, engine runs clean cruising at slow speeds.

  • Not recommended to run at absolute full throttle for extended periods of time, but to back off slightly, for continuous running.
  • Convenience of pulling into closest service station when low on fuel but must add oil occasionally and periodic oil changes.
  • 11 moving parts – eventually requires valve adjustment (many thousands of miles but depends on your riding style).
  • 87 octane, or better, non-ethanol gasoline and automotive oil (reference manual of your engine)

*** 4-stroke engines contain shipping Oil – Add oil before running engine (less than 3 oz) but don’t Overfill – keep oil level below Full indicator on dipstick. When checking oil level, Push dipstick in – Don’t screw it in – just push in, like checking oil level on auto dipstick. Check oil level when engine is cool, before starting or allow engine to cool a minimum of 5-10 minutes after running, before checking oil level.

Too much oil will cause oil to be sucked into the PVC valve, won’t hurt the engine but will make a smelly mess till it’s cleaned/run out. Hard trail riders may want to drop oil level even lower, i.e.. half way between Full and Low indicators on dipstick.