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RETROL V-Twin Engine Model R34 Four-Stroke Gasoline Engine Motorcycle Engine OHV 4.2CC - RETROL 4-Stroke & Inline Engines
RETROL

RETROL V-Twin Engine Model R34 Four-Stroke Gasoline Engine Motorcycle Engine OHV 4.2CC

✓ Precision Quality Inspected • Backed by 30-Day Guarantee
$799.99 USD

Engineering Summary

The RETROL V-Twin Engine Model R34 Four-Stroke Gasoline Engine Motorcycle Engine OHV 4.2CC is a 1/5 4.2CC 4-Stroke & Inline Engine precision-engineered by RETROL. Features construction operating on 95# Petrol. Available for $799.99 USD with free worldwide tracked shipping, 30-day returns, and replacement parts support at Stirlingkit.

✓ Free Worldwide Shipping: Tracked air delivery in 5–14 business days.
✓ Missing Parts Guarantee: Free replacement parts dispatched within 7 days.
✓ 30-Day Risk-Free Returns: Full refund on unbuilt kits in original box.

Technical Specifications

25 Verified Parameters
Color Brass/Silver
Material Brass + Aluminum Alloy + Stainless Steel
Brand RETROL
State Ready to Run
Scale 1/5
Type Twin-Cylinder Four-Stroke Petrol Engine
Displacement 4.2CC
Cylinder Diameter 13mm
Stroke 16mm
Cooling Method Air-Cooled
Starting Method Electric Drill Start/Manual Start
Ignition Method CDI Electronic Ignition
Spark Plug Type 3/16-40 Inch Thread Spark Plug
Lubrication Type Mixed/Splash Lubrication (Petrol/Oil = 25/1)
Fuel Type 95# Petrol
Oil Type 2T Motor Oil
Starting Power 4.5V AA battery *3 (Not Included)
Engine Model Dimensions 120×90×115mm
Wooden Base Dimensions 150×120×30mm
Product Weight 1300g
Product Dimensions 150×120×140mm
Package Weight 1400g
Package Dimensions 20×20×20cm
Packing Gift Box
Ages 16+

Features, Architecture & Package Contents

RETROL V-Twin Engine Model R34 Four-Stroke Gasoline Engine Motorcycle Engine OHV 4.2CC


Features:


.Based on the V-twin motorbike EVOLUTION engine of the 1980s, this representative mini petrol engine model captures the spirit of different eras in a fascinating way.
.The real engine highly reproduces the details including the vintage charm of the machine, classic body lines, COLD COOLING construction, new carburetor design, and toggle throttle lever. Upgraded the intake and exhaust with large and small valves for a significant power increase, better reproducing of the real engine details, which is one of the most complex engines we have ever produced.
.Made of brass and stainless steel, featuring carefully designed and processed engine parts. Comes with wooden base for easy placement and operation to ensure smooth operation.
.The engine, RTR at any time, making it even friendlier to novice model enthusiasts with starting and ignition equipment. You won't be disappointed when it runs and you will be surprised by how well it works.
.Perfect as a coveted collector's model that is worth showing and playing with. Whether it is for your own use, or as a personalized high-grade model gift for friends and family during major festivals, it is suitable.
.Notes:
.When the machine does not start properly if the ignition and cylinder compression are normal, the oiler needle needs to be adjusted.
.Loosen the 1/4 turn and start the flywheel after tightening the main fuel needle on the carburettor, so that the mixing of petrol and air reaches the mixing ratio for normal operation after several times.
.When the engine stops, the power switch should be turned off.

Specifications:

.Color: Brass/Silver
.Material: Brass + Aluminum Alloy + Stainless Steel
.Brand: RETROL
.State: Ready to Run
.Scale: 1/5
.Type: Twin-Cylinder Four-Stroke Petrol Engine
.Displacement: 4.2CC
.Cylinder Diameter: 13mm
.Stroke: 16mm
.Cooling Method: Air-Cooled
.Starting Method: Electric Drill Start/Manual Start
.Ignition Method: CDI Electronic Ignition
.Spark Plug Type: 3/16-40 Inch Thread Spark Plug
.Lubrication Type: Mixed/Splash Lubrication (Petrol/Oil = 25/1)
.Fuel Type: 95# Petrol
.Oil Type: 2T Motor Oil
.Starting Power: 4.5V AA battery *3 (Not Included)
.Engine Model Dimensions: 120×90×115mm
.Wooden Base Dimensions: 150×120×30mm
.Product Weight: 1300g
.Product Dimensions: 150×120×140mm
.Package Weight: 1400g
.Package Dimensions: 20×20×20cm
.Packing: Gift Box
.Ages: 16+

Verified Builder Reviews

Authentic feedback from hobbyists, machinists, and scale model engineers

No written reviews have been submitted for this specific kit yet. Have you built the RETROL V-Twin Engine Model R34 Four-Stroke Gasoline Engine Motorcycle Engine OHV 4.2CC? Email service@stirlingkits.com with your bench photos to share your build log.

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