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Link to photo gallery of bikes with Starfire bike engine kits fitted

Bike Engine StarFire KIT GenII GT 80 Dark Knight


Product Code: e080blk
Product Name: StarFire KIT GenII GT 80 Dark Knight
Price: $299.00


Instruction Manual
Powder coat Black, the easy to fit the Gen II GT80 Dark Knight engine kit includes all components for mounting to your bicycle frame. Ideally, your bike frame tube should be 28mm to 30mm dia. with a 70 degree included V angle for sufficient engine mounting clearance. More information is available in the StarFire Instruction Manual....

Average engine kit assembly time may take two to four hours, perhaps longer or even a few days, depending on mechanical ability. But the joy of assembling your engine and kit components to your bike, will give you total satisfaction when you fire that StarFire motor into life for the first time to motorize your push bike. A rewarding joy and challenge is found, in designing the custom installation of your own.

The StarFire brand of bike engine kit is sold to a global market, with a large volume of sales to North American, therefore, US compliance requires StarFire engine and kit components to be produced to a high standard of engineering quality . Using only top quality components in the StarFire bicycle engine kit, such as Japanese 10 point roller Needle Bearings - Chromium Engine Barrel for Racing Endurance on the GT 80's - Ball Bearing Chain Idler - Heavy Duty 415 Drive Chain - New Push Button Clutch Lever - Accelerator Kill Switch for Safety.
StarFire engines are economical to run and will travel approximately 100 K's on one dollar of two stroke petrol mix.

It is strongly recommended that a run in period at low speeds of 15/20 kph on short 20/30 minute journeys to prevent engine over heating, be observed. When your StarFire Engine has been run in, this will give longevity of engine life, better engine performance and extra power with a lower fuel consumption.
During the run in period, we recommend, that the petrol to oil mix for your two stroke engine be...18 parts fuel to 1 part of top quality two stroke motor oil. After your engine has been run in, burning approx 15 litres at fuel ratio 18:1 through the engine motor, you can change the petrol to oil mixture to...25 parts fuel to 1 part of quality synthetic two stroke motor oil, such as Castrol R30 or the top quality Castrol A747 or Shell Advance. Along with cleaner motor running, synthetic two stroke racing oils give a more fragrant exhaust emissions with less smoke than regular two stroke fuel oil.

StarFire GT80 DARK KNIGHT  Motorized Bike Engine Kit

  • Engine Type -- Two Stroke Air Cooled Single Cylinder Friction Start
  • Head -- Spark Plug Centred
  • Fuel Run In Ratio Mix -- 18:1 Using quality two stroke synthetic oil - Castrol R30
  • Fuel Regular Ratio Mix -- 25:1 Using quality two stroke synthetic oil - Castrol R30
  • Engine Displacement -- 70cc
  • Bore -- 48mm
  • Stroke -- 38mm
  • Compression Ratio -- 6.4 : 1
  • Ignition -- CDI Electronic
  • Power Rating -- 1.95kw @ 5500rpm
  • Average Speed -- 55kph
  • Fuel Economy (after run in) -- 120km/litre fuel
  • Weight (kit) -- 9.3kg
  • Fuel Tank -- 2.5 litres

To ensure your Star Fire Bike Engine arrives in perfect condition, we pack it in dual heavy duty cartons. Look here.


Bicycle Engine Kit Buyer....


As in the operation of any mechanical equipment or motorized vehicle, operating a motorized bicycle or assembly of a bicycle engine kit is no exception and can involve risk of serious bodily injury.  The buyer absolves the seller and accepts responsibility for engine kit assembly and all vehicle operation that can and may lead to personal bodily injury, social distress, economic loss, other losses, costs and damages from day of purchase.

Your Legal Obligation

National Australian road rules & regulations, states that a power assisted pedal cycle or bicycle with an optional or auxiliary power source attached can be no greater than a power rating of 200 watts.

A motorized or power assisted bicycle with an auxiliary power source attached with a power output of greater than 200 watts is not permitted to be used on public land, open space, state road, highway, freeway, shared footpaths, bicycle paths or any area there is public access.

A bicycle or vehicle with two wheels and powered by an electric motor or internal combustion engine generating more than 200 watts is required to comply with The Department of Infrastructure and Transport national standards of Australian design Rules for moped and motorcycle requirements prior to operation on a public road or area of public access.

It is the responsibility of the purchaser of a bicycle engine kit or the operator of a motorized bicycle to be fully aware, understand and comply with the road rules & regulations of Australian State laws governing the use of a power or pedal assisted motorized bicycle, off road or in a public place, on any state road, highway or freeway. StarFire Distributors includes a guideline information page ‘Cycling and the Law’ for your consideration, with links to access your state information, so that you can be fully informed before you make a purchase or operate any power assisted bicycle legally and safely.