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Quick answer
The RETROL R32 is a 4.2cc, four-stroke OHV V-twin model with shovelhead-inspired motorcycle styling, air cooling and CDI ignition. It comes mounted for display, while gasoline, oil and the three-AA-cell ignition supply require preparation. This is the R32, not the similarly sized R33 Evolution or H08 Hoglet.
What makes R32 distinct?
The gallery makes the R32's wider polished cylinder-head outline and the crankcase's opposite side visible, so buyers can check model identity before ordering. R32's display is a miniature mechanism with exposed exhaust and a clear visual path between cylinders and output. Supplier figures for speed or performance are not independent measurements by EnginesDIY.
Supplier-listed specifications
| Model / displacement | RETROL R32 / 4.2cc |
|---|---|
| Layout | Air-cooled OHV V-twin, four-stroke |
| Ignition | CDI electronic ignition |
| Start method | Manual or electric-drill coupling |
| Fuel and oil | Supplier lists 95# gasoline with 2T oil at 25:1 |
| Supplier-listed product weight | Approximately 1.2 kg |
Check the delivered manual for the exact running procedure. These figures have not been independently performance-tested by this store.
Included parts and supplies to prepare
The supplier packing list includes the engine, drill connecting shaft, hand puller, spare O-rings and manual. A wooden display base appears with the assembled product. AA batteries, gasoline, 2T oil and the electric drill are not listed as included.
First-run and safety considerations
Use the R32 manual to verify the CDI connection, fuel/oil ratio, spark plug and run-in guidance for the delivered unit. Fit the correct ignition cells before starting and keep the exhaust and rotating drive clear. Because general supplier photos show accessories around the base, use the written pack list, not props in an image, to decide what else to source. Run only in a ventilated and supervised test area with fire protection.
Which V-twin should you choose?
Select R32 for the shovelhead-style V-twin look. The R33 Evolution offers a separate exhaust-material option and different styling. The H08 Hoglet adds a pedal and chain starting mechanism, a different interaction altogether.
Frequently asked questions
Does the R32 include a starter?
The supplier lists a hand puller and a connecting shaft for a drill; it does not list the drill itself.
Is the R32 water-cooled?
No. Supplier specifications describe air cooling.
Are batteries in the package?
No. Source the three AA cells specified for the 4.5 V ignition supply separately.
Can I swap R32 and R33 parts?
Do not assume interchangeability based on matching displacement; confirm component drawings and part numbers with the manufacturer.
Before ordering
Match the model number and appearance to your collecting goal. Check current supplier availability and any accessories you need before checkout; no output under load is guaranteed by the photos.
Model and package source: EngineDIY R32 listing. Reviewed 23 September 2026.