What category is the 2020 Thumpstar MX 85?

The 2020 Thumpstar MX 85 has a Category of Minibike, cross.

What is the engine size of the 2020 Thumpstar MX 85?

The 2020 Thumpstar MX 85 has a Capacity: of 85.0 ccm (5.19 cubic inches).

What type of engine does the 2020 Thumpstar MX 85 have?

The 2020 Thumpstar MX 85 has a Engine type of Single cylinder, two-stroke.

Thumpstar MX 85 - 2020 Specifications and Reviews

Name: 2020 Thumpstar MX 85
Brand: Thumpstar

The 2020 Thumpstar MX 85 is a lightweight two-stroke pit bike designed for young riders and beginners learning motocross fundamentals. Known for its agile handling and compact frame, it delivers accessible performance with adjustable suspension and reliable carburetor fueling. Its durable steel-rimmed wheels and simple kick-start system make it an ideal entry-level machine for off-road training.

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General information
Category	Minibike, cross
Year	2020
Model	Thumpstar MX 85

Engine and Transmission Specifications
Clutch	Centrifugal
Fuel system	Carburettor. Keihin PWK 28
Bore x Stroke	49.0 x 47.0 mm (1.9 x 1.9 inches)
Engine type	Single cylinder, two-stroke
Capacity:	85.0 ccm (5.19 cubic inches)
Brakes, suspension, Frame and wheels
Wheels	Steel Rim
Rear brakes	Single disc
Front brakes	Single disc. Dual Pot Calipers
Rear wheel travel	185 mm (7.3 inches)
Rear Suspension	VS1 PDI Mono Shock
Front wheel travel	205 mm (8.1 inches)
Front Suspension	Adjustable Upside Down VS1 Forks
Frame type	Central-Tube Frame with Double-Cradle
Physical measures and capacities
Fuel capacity	5.00 litres (1.32 US gallons)

Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Starter	Kick
Color options	Green/Black/White

Performance Profile & Rider Fit

Best For

Track60%

City5%

Cornering70%

Daily Riding10%

Touring5%

Passenger5%

Rider Profile

Best For	This is a youth-to-novice level machine, best suited to young or smaller riders learning motocross fundamentals rather than experienced adults.
Purpose	It is built purely for off-road motocross-style riding on dirt tracks and trails, not for commuting or road use.
Rider Fit	Its small 85cc two-stroke displacement and minibike proportions mean it demands light body weight and suits a compact rider frame.
Character	It rewards an energetic, throttle-happy riding style since two-stroke minibikes reward revs, momentum, and aggressive lightweight cornering.
Not Ideal For	It is not suitable for taller or heavier adult riders, highway travel, touring, or anyone seeking comfort and long-distance stability.

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

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Rider Reviews

Total comments: 1

MotorcycleDB Review

The 2020 Thumpstar MX 85 is a high-performance motocross bike that will impress riders of all skill levels. With a powerful 85cc engine and responsive handling, this bike offers a thrilling ride on the track or off-road trails. The lightweight frame and durable components make the MX 85 a top choice for anyone looking for a reliable and capable motocross machine. Whether you're a beginner looking to improve your skills or a seasoned rider seeking a competitive edge, the Thumpstar MX 85 delivers an outstanding performance that will exceed your expectations. In conclusion, the 2020 Thumpstar MX 85 is a fantastic choice for motocross enthusiasts looking for a high-quality bike at an affordable price. Its powerful engine, responsive handling, and durable construction make it a top contender in the 85cc motocross bike category. Whether you're hitting the track or tearing up the trails, the MX 85 offers a thrilling ride that will impress riders of all skill levels. With its impressive performance and reliability, the Thumpstar MX 85 is a fantastic choice for anyone looking to take their motocross experience to the next level.