Motocross Bikes
2005TM Racing MX 85 Junior
30 fields on record
The 2005 TM Racing MX 85 Junior is a lightweight motocross bike designed for young aspiring riders transitioning to competitive racing. Built around a liquid-cooled single-cylinder engine with advanced electronic ignition and hydraulic clutch control, it delivers responsive performance ideal for developing technique. Known for its nimble handling and reliable powerband, this machine excels in junior racing classes and training environments.
- Capacity
- 85.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Dry weight
- Not on record
Know it? Add it → - Seat height
- 918 mm
- Power
- Not on record
Know it? Add it →
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for motocross racing on closed off-road tracks, not for street use, commuting, or general recreation.
- Built for
- A sharp, race-bred two-stroke with premium suspension components (Paioli and Ohlins) that rewards aggressive, precise riding and rapid direction changes.
- Not ideal for
- Not suitable for adult riders, road riding, touring, passengers, or anyone seeking a comfortable or beginner-friendly bike.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 85.0 ccm
- Engine type
- Single, two-stroke
- Bore x stroke
- 47.9 x 47.0 mm
- Compression
- 17.2:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- Koukusan CDI electronic w/ variable advance
- Lubrication system
- 3.5% oil mixture
- Power
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multiple-disk in oil bath with hydraulic control
Dimensions & weight
- Wheelbase
- 1280 mm
- Overall length
- 2030 mm
- Overall width
- 1250 mm
- Overall height
- 1300 mm
- Seat height
- 918 mm
- Fuel capacity
- 7.00 litres
- Ground clearance
- 305 mm
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Cr-Mo steel. Perimetral oval section.
- Front suspension
- Paioli USD 43 mm
- Rear suspension
- WP
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 260 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 220 mm
- Front tyre
- 70/100-17
- Rear tyre
- 90/100-14
Specs last verified against published sources: .
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2005 | 2007 | 2008 | 2010 | 2011 |
|---|---|---|---|---|---|
| Capacity | 85 cc | 85 cc | 85 cc | 85 cc | 85 cc |
| Seat height | 918 mm | 918 mm | 918 mm | 918 mm | 918 mm |
| Fuel capacity | 7 L | 7 L | 7 L | 7 L | 7 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the TM Racing MX 85 Junior?
The 2005 TM Racing MX 85 Junior has a Capacity of 85.0 ccm (5.19 cubic inches).
How many gears does the TM Racing MX 85 Junior have?
The 2005 TM Racing MX 85 Junior has a Gearbox of 6-speed.
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