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Stirlingkit R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle Engine Model 3.2cc ICE Engine
Stirlingkit R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle Engine Model 3.2cc ICE Engine, view 2Stirlingkit R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle Engine Model 3.2cc ICE Engine, view 3Stirlingkit R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle Engine Model 3.2cc ICE Engine, view 4Stirlingkit R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle Engine Model 3.2cc ICE Engine, view 5Stirlingkit R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle Engine Model 3.2cc ICE Engine, view 6
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R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle Engine Model 3.2cc ICE Engine

$799.99

In stock at stirlingkit.com

This R90S model is a 3.2cc horizontally opposed, two-cylinder four-stroke gasoline engine styled after a classic flat-twin motorcycle engine. It's precision cast in brass and stainless steel, mounted on a wooden base, and starts by hand or drill with a 4.5V ignition on three AA batteries. It costs $799.99.

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Highlights

  • 3.2cc flat-twin, four-stroke gasoline
  • Symmetrical exhaust pipes and air cooling
  • Brass, stainless steel and wood construction
  • Hand or electric drill starting
  • 4.5V ignition (3 AA)

Best for

Fans of boxer-twin motorcycles who want a running miniature.

Things to consider

  • AA batteries aren't included.
  • The listing gives two different weights (1760g and 800g), so confirm if weight matters.
  • Burns gasoline; run with ventilation.

Key specs

Price$799.99
Displacement3.2cc
Bore x stroke13mm x 12mm
Base150 x 120 x 30mm wood
Ignition4.5V, 3 AA (not included)
Ages14+

Our take

A rare runnable flat-twin model for boxer engine fans.

R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle… at a glance

BrandStirlingkit
Price$799.99
TypeInternal combustion engine
AvailabilityIn stock at stirlingkit.com
Couponstart
ReturnsThe about page lists a 30-day return or exchange. All returns need an RMA requested via…

Price check

At $799.99, the R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle… is toward the top of Stirlingkit's price range, whose 2,729 listed products run $0.54 to $11,000.

Similar items from other brands we track run $39.99 to $298.

Buying from Stirlingkit

Stirlingkit is a good source for hobbyists who want running miniature engines, Stirling and steam models, and build kits that most toy stores never carry. Skip it if you need fast, cheap returns, since everything goes through an emailed RMA to a Shenzhen address. Check the shipping method and warehouse at checkout first, because airmail can take 15 to 35 business days.

Shipping
Airmail takes 15 to 35 business days, EMS 5 to 8, and DHL Express 3 to 7. Shipping fees vary by product, warehouse, and destination and show on each product page and at checkout.
Returns
The about page lists a 30-day return or exchange. All returns need an RMA requested via service@stirlingkit.com, and items must include original packaging and accessories with no physical damage.
Warranty
The about page lists a 1-year warranty and lifetime customer support.

Read our full Stirlingkit review and shop all products →

Frequently asked questions

How do you start the R90S engine?
Prime by turning the flywheel, switch on ignition, then spin the flywheel quickly by hand or with a drill.
What's in the box?
The engine and a manual.
How much is the R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle…?
Stirlingkit lists it at $799.99 on stirlingkit.com. We refresh prices throughout the day, but always confirm the final price at checkout.
Is there a coupon code for the R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle…?
Stirlingkit's store-wide code start can be entered at checkout on stirlingkit.com. Stirlingkit sets the discount, and some items or sale prices may be excluded.
What is Stirlingkit's return policy?
The about page lists a 30-day return or exchange. All returns need an RMA requested via service@stirlingkit.com, and items must include original packaging and accessories with no physical damage.
How long does Stirlingkit take to ship?
Airmail takes 15 to 35 business days, EMS 5 to 8, and DHL Express 3 to 7. Shipping fees vary by product, warehouse, and destination and show on each product page and at checkout.
Does the R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle… come with a warranty?
Stirlingkit's published warranty terms: The about page lists a 1-year warranty and lifetime customer support.
Where can I buy the R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle…?
The R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle… is sold directly by Stirlingkit on stirlingkit.com. The Shop now button on this page goes straight to the product there, and code start can be applied at checkout.
Is the R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle… in stock?
Yes. Stirlingkit lists it as in stock on stirlingkit.com as of our latest check. Stock and prices refresh throughout the day.
Is Stirlingkit a legit store?
Stirlingkit is a good source for hobbyists who want running miniature engines, Stirling and steam models, and build kits that most toy stores never carry. Skip it if you need fast, cheap returns, since everything goes through an emailed RMA to a Shenzhen address. Check the shipping method and warehouse at checkout first, because airmail can take 15 to 35 business days. Our full Stirlingkit review covers shipping, returns and what to check before ordering.
Is the R90S Gasoline Flat-twin Four-stroke Miniature Motorcycle… expensive?
At $799.99 it is toward the top of Stirlingkit's range ($0.54 to $11,000 across 2,729 products), and similar items from other brands run $39.99 to $298.

More from Stirlingkit

Shop all Stirlingkit →

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