IZH Jupiter 4 - 1985 Specifications and Reviews

The 1985 IZH Jupiter 4 is a lightweight Soviet-era naked bike suited for budget-conscious commuters and novice riders. Powered by an air-cooled 350cc twin engine producing 27 horsepower, it's known for its simplicity, affordability, and practical everyday usability rather than performance.

5 stars Average rating: 5 from 1 votes
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General information

CategoryNaked bike
Year1985
ModelIZH Jupiter 4
 
 

Engine and Transmission Specifications

Transmission typefinal driveChain
Gearbox4-speed
Cooling systemAir
Fuel controlPort control
Bore x stroke62.0 x 58.0 mm (2.4 x 2.3 inches)
Compression9.5:1
Power27.00
Stroke2
Engine typeTwin
Capacity:350.00 ccm (21.36 cubic inches)

Physical measures and capacities

Weight incl. oil, gas, etc180.0 kg (396.8 pounds)

IZH Jupiter 4 dimensions and frame

Rear brakesExpanding brake
Front brakesExpanding brake
Rear tyre dimensions3.50-18
Front tyre dimensions3.50-18

Speed and acceleration

Top speed125.0 km/h (77.7 mph)
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity17.00 litres (4.49 gallons)

Performance Profile & Rider Fit

27 hp
Peak Power
77.7 mph
Top Speed

Best For

Track10%
City45%
Cornering30%
Daily Riding40%
Touring30%
Passenger30%

Rider Profile

Best ForThis bike suits riders comfortable with vintage two-stroke machinery and modest performance, including beginners seeking a simple, low-power classic.
PurposeIt's built for leisurely nostalgic rides and short local trips rather than performance or long-distance touring.
Rider FitA relatively light and low-powered machine, it's easy to handle physically and manageable for riders of average strength and stature.
CharacterThis is a charmingly old-school Soviet-era cruiser with a rugged, no-frills mechanical simplicity and modest air-cooled two-stroke twin power.
Not Ideal ForIt's not suitable for riders wanting modern performance, high-speed touring, or serious off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

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