Retrol Evolution R34 V-Twin Motorcycle Engine Model

The RETROL R34 V-Twin Engine Model is a fully functional miniature gasoline engine inspired by the V-twin Evolution motorcycle engines of the 1970s. Designed to capture the mechanical character of classic motorcycle engines, this model combines vintage styling with precision-machined metal components.

With its exposed mechanical layout, air-cooled structure, and working carburettor system, the R33 provides an engaging running display and an excellent addition to any collection of functional model engines.

Key Features

Classic V-Twin Design
Based on the iconic V-twin motorcycle engines of the 1970s, the R33 features authentic engine proportions, classic body lines, and a traditional air-cooled layout.

Precision Metal Construction
Manufactured from brass and stainless steel components using precision machining processes to ensure durability, smooth operation, and a high-quality mechanical finish.

Improved Valve Design
Upgraded intake and exhaust valves with large and small valve configuration help improve airflow and enhance overall engine performance.

Working Carburettor System
Equipped with a newly designed carburettor and push-type throttle lever, allowing accurate control of the fuel–air mixture for reliable running.

Ready-to-Run Display Model
Supplied with ignition components and starting accessories, the engine can be operated for demonstration and display. The included wooden base provides a stable platform for running or showcasing the model.

Ideal for Collectors & Enthusiasts
Suitable for model engineering enthusiasts, collectors, educational demonstrations, or as a distinctive gift for those interested in mechanical engineering.

Specifications

• Brand: RETROL

• Model: R33

• Engine Type: V-Twin, 2-Cylinder, 4-Stroke Gasoline Engine Model

• Scale: 1/5

• Displacement: 4.2cc

• Cylinder Bore: 13 mm

• Stroke: 16 mm

• Cooling System: Air-cooled

• Ignition System: CDI Electronic Ignition

• Starting Method: Electric drill start or manual pull start

• Spark Plug: 3/16-40 threaded spark plug

• Lubrication: Fuel mixture lubrication (Gasoline : 2-stroke oil = 25:1)

• Recommended Fuel: 95# gasoline (unleaded petrol equivalent)

• Base: Wooden display base

Dimensions

• Engine Size: 12 × 9 × 11.5 cm

• Overall Size (with base): 15 × 12 × 14 cm

• Wooden Base: 15 × 12 × 3 cm

Weight

• Product Weight: approx. 1.3 kg
  

Age Recommendation: 14+